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e83b6d0c2e
ClickHouse/dbms/Functions/FunctionsExternalDictionaries.h
Ivan 97f2a2213e
Move all folders inside /dbms one level up (#9974) 
* Move some code outside dbms/src folder
* Fix paths
2020-04-02 02:51:21 +03:00

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#pragma once
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypesDecimal.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypeDate.h>
#include <DataTypes/DataTypeDateTime.h>
#include <DataTypes/DataTypeTuple.h>
#include <DataTypes/DataTypeUUID.h>
#include <Common/typeid_cast.h>
#include <Common/assert_cast.h>
#include <Columns/ColumnsNumber.h>
#include <Columns/ColumnConst.h>
#include <Columns/ColumnArray.h>
#include <Columns/ColumnString.h>
#include <Columns/ColumnTuple.h>
#include <Access/AccessFlags.h>
#include <Interpreters/Context.h>
#include <Interpreters/ExternalDictionariesLoader.h>
#include <Functions/IFunctionImpl.h>
#include <Functions/FunctionHelpers.h>
#include <Dictionaries/FlatDictionary.h>
#include <Dictionaries/HashedDictionary.h>
#include <Dictionaries/CacheDictionary.h>
#include <Dictionaries/ComplexKeyHashedDictionary.h>
#include <Dictionaries/ComplexKeyCacheDictionary.h>
#include <Dictionaries/RangeHashedDictionary.h>
#include <Dictionaries/TrieDictionary.h>
#include <Dictionaries/PolygonDictionary.h>
#include <ext/range.h>
#include <type_traits>
namespace DB
{
namespace ErrorCodes
{
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int UNSUPPORTED_METHOD;
extern const int UNKNOWN_TYPE;
extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
extern const int TYPE_MISMATCH;
extern const int ILLEGAL_COLUMN;
extern const int BAD_ARGUMENTS;
}
/** Functions that use plug-ins (external) dictionaries_loader.
*
* Get the value of the attribute of the specified type.
* dictGetType(dictionary, attribute, id),
* Type - placeholder for the type name, any numeric and string types are currently supported.
* The type must match the actual attribute type with which it was declared in the dictionary structure.
*
* Get an array of identifiers, consisting of the source and parents chain.
* dictGetHierarchy(dictionary, id).
*
* Is the first identifier the child of the second.
* dictIsIn(dictionary, child_id, parent_id).
*/
class FunctionDictHas final : public IFunction
{
public:
static constexpr auto name = "dictHas";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictHas>(context.getExternalDictionariesLoader(), context);
}
FunctionDictHas(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_)
: dictionaries_loader(dictionaries_loader_)
, context(context_) {}
String getName() const override { return name; }
private:
size_t getNumberOfArguments() const override { return 2; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0}; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (!isString(arguments[0]))
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[1]).isUInt64() &&
!isTuple(arguments[1]))
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
return std::make_shared<DataTypeUInt8>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
/** Do not require existence of the dictionary if the function is called for empty block.
* This is needed to allow successful query analysis on a server,
* that is the initiator of a distributed query,
* in the case when the function will be invoked for real data only at the remote servers.
* This feature is controversial and implemented specially
* for backward compatibility with the case in Yandex Banner System.
*/
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictHas, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatchSimple<FlatDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchSimple<HashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchSimple<CacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyHashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyCacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<TrieDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<SimplePolygonDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatchSimple(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
const auto id_col_untyped = block.getByPosition(arguments[1]).column.get();
if (const auto id_col = checkAndGetColumn<ColumnUInt64>(id_col_untyped))
{
const auto & ids = id_col->getData();
auto out = ColumnUInt8::create(ext::size(ids));
dict->has(ids, out->getData());
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Second argument of function " + getName() + " must be UInt64", ErrorCodes::ILLEGAL_COLUMN};
return true;
}
template <typename DictionaryType>
bool executeDispatchComplex(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
const ColumnWithTypeAndName & key_col_with_type = block.getByPosition(arguments[1]);
const ColumnPtr & key_col = key_col_with_type.column;
if (checkColumn<ColumnTuple>(key_col.get()))
{
const auto & key_columns = assert_cast<const ColumnTuple &>(*key_col).getColumnsCopy();
const auto & key_types = static_cast<const DataTypeTuple &>(*key_col_with_type.type).getElements();
auto out = ColumnUInt8::create(key_col_with_type.column->size());
dict->has(key_columns, key_types, out->getData());
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Second argument of function " + getName() + " must be " + dict->getKeyDescription(), ErrorCodes::TYPE_MISMATCH};
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
};
static bool isDictGetFunctionInjective(const ExternalDictionariesLoader & dictionaries_loader, const Block & sample_block)
{
if (sample_block.columns() != 3 && sample_block.columns() != 4)
throw Exception{"Function dictGet... takes 3 or 4 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(sample_block.getByPosition(0).column.get());
if (!dict_name_col)
throw Exception{"First argument of function dictGet... must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(sample_block.getByPosition(1).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function dictGet... must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
return dictionaries_loader.getDictionary(dict_name_col->getValue<String>())->isInjective(attr_name_col->getValue<String>());
}
/** For ColumnVector. Either returns a reference to internal data,
* or convert it to T type, stores the result in backup_storage and returns a reference to it.
*/
template <typename T>
static const PaddedPODArray<T> & getColumnDataAsPaddedPODArray(const IColumn & column, PaddedPODArray<T> & backup_storage);
class FunctionDictGetString final : public IFunction
{
public:
static constexpr auto name = "dictGetString";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictGetString>(context.getExternalDictionariesLoader(), context);
}
FunctionDictGetString(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_)
: dictionaries_loader(dictionaries_loader_)
, context(context_) {}
String getName() const override { return name; }
private:
bool isVariadic() const override { return true; }
size_t getNumberOfArguments() const override { return 0; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
bool isInjective(const Block & sample_block) override
{
return isDictGetFunctionInjective(dictionaries_loader, sample_block);
}
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (arguments.size() != 3 && arguments.size() != 4)
throw Exception{"Number of arguments for function " + getName() + " doesn't match: passed "
+ toString(arguments.size()) + ", should be 3 or 4.", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
if (!isString(arguments[0]))
{
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
if (!isString(arguments[1]))
{
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
if (!WhichDataType(arguments[2]).isUInt64() &&
!isTuple(arguments[2]))
{
throw Exception{"Illegal type " + arguments[2]->getName() + " of third argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
/// This is for the case of range dictionaries_loader.
if (arguments.size() == 4 && !arguments[3]->isValueRepresentedByInteger())
{
throw Exception{"Illegal type " + arguments[3]->getName() +
" of fourth argument of function " + getName() +
" must be convertible to Int64.", ErrorCodes::ILLEGAL_COLUMN};
}
return std::make_shared<DataTypeString>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictGet, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatch<FlatDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<HashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<CacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyHashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyCacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<TrieDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<SimplePolygonDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchRange<RangeHashedDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatch(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (arguments.size() != 3)
throw Exception{"Function " + getName() + " for dictionary of type " + dict->getTypeName() +
" requires exactly 3 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const auto id_col_untyped = block.getByPosition(arguments[2]).column.get();
if (const auto id_col = checkAndGetColumn<ColumnUInt64>(id_col_untyped))
{
auto out = ColumnString::create();
dict->getString(attr_name, id_col->getData(), out.get());
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Third argument of function " + getName() + " must be UInt64", ErrorCodes::ILLEGAL_COLUMN};
return true;
}
template <typename DictionaryType>
bool executeDispatchComplex(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (arguments.size() != 3)
throw Exception{"Function " + getName() + " for dictionary of type " + dict->getTypeName() +
" requires exactly 3 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const ColumnWithTypeAndName & key_col_with_type = block.getByPosition(arguments[2]);
/// Functions in external dictionaries_loader only support full-value (not constant) columns with keys.
ColumnPtr key_col = key_col_with_type.column->convertToFullColumnIfConst();
if (checkColumn<ColumnTuple>(key_col.get()))
{
const auto & key_columns = assert_cast<const ColumnTuple &>(*key_col).getColumnsCopy();
const auto & key_types = static_cast<const DataTypeTuple &>(*key_col_with_type.type).getElements();
auto out = ColumnString::create();
dict->getString(attr_name, key_columns, key_types, out.get());
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Third argument of function " + getName() + " must be " + dict->getKeyDescription(), ErrorCodes::TYPE_MISMATCH};
return true;
}
template <typename DictionaryType>
bool executeDispatchRange(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (arguments.size() != 4)
throw Exception{"Function " + getName() + " for dictionary of type " + dict->getTypeName() +
" requires exactly 4 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const auto & id_col_untyped = block.getByPosition(arguments[2]).column;
const auto & range_col_untyped = block.getByPosition(arguments[3]).column;
PaddedPODArray<UInt64> id_col_values_storage;
PaddedPODArray<Int64> range_col_values_storage;
const auto & id_col_values = getColumnDataAsPaddedPODArray(*id_col_untyped, id_col_values_storage);
const auto & range_col_values = getColumnDataAsPaddedPODArray(*range_col_untyped, range_col_values_storage);
auto out = ColumnString::create();
dict->getString(attr_name, id_col_values, range_col_values, out.get());
block.getByPosition(result).column = std::move(out);
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
};
class FunctionDictGetStringOrDefault final : public IFunction
{
public:
static constexpr auto name = "dictGetStringOrDefault";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictGetStringOrDefault>(context.getExternalDictionariesLoader(), context);
}
FunctionDictGetStringOrDefault(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_)
: dictionaries_loader(dictionaries_loader_)
, context(context_) {}
String getName() const override { return name; }
private:
size_t getNumberOfArguments() const override { return 4; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (!isString(arguments[0]))
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName() +
", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!isString(arguments[1]))
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName() +
", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[2]).isUInt64() &&
!isTuple(arguments[2]))
{
throw Exception{"Illegal type " + arguments[2]->getName() + " of third argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
if (!isString(arguments[3]))
throw Exception{"Illegal type " + arguments[3]->getName() + " of fourth argument of function " + getName() +
", must be String.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
return std::make_shared<DataTypeString>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictGet, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatch<FlatDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<HashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<CacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyHashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyCacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<SimplePolygonDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<TrieDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatch(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const auto id_col_untyped = block.getByPosition(arguments[2]).column.get();
if (const auto id_col = checkAndGetColumn<ColumnUInt64>(id_col_untyped))
executeDispatch(block, arguments, result, dict, attr_name, id_col);
else if (const auto id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(id_col_untyped))
executeDispatch(block, arguments, result, dict, attr_name, id_col_const);
else
throw Exception{"Third argument of function " + getName() + " must be UInt64", ErrorCodes::ILLEGAL_COLUMN};
return true;
}
template <typename DictionaryType>
void executeDispatch(
Block & block, const ColumnNumbers & arguments, const size_t result, const DictionaryType * dictionary,
const std::string & attr_name, const ColumnUInt64 * id_col)
{
const auto default_col_untyped = block.getByPosition(arguments[3]).column.get();
if (const auto default_col = checkAndGetColumn<ColumnString>(default_col_untyped))
{
/// vector ids, vector defaults
auto out = ColumnString::create();
const auto & ids = id_col->getData();
dictionary->getString(attr_name, ids, default_col, out.get());
block.getByPosition(result).column = std::move(out);
}
else if (const auto default_col_const = checkAndGetColumnConstStringOrFixedString(default_col_untyped))
{
/// vector ids, const defaults
auto out = ColumnString::create();
const auto & ids = id_col->getData();
String def = default_col_const->getValue<String>();
dictionary->getString(attr_name, ids, def, out.get());
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Fourth argument of function " + getName() + " must be String", ErrorCodes::ILLEGAL_COLUMN};
}
template <typename DictionaryType>
void executeDispatch(
Block & block, const ColumnNumbers & arguments, const size_t result, const DictionaryType * dictionary,
const std::string & attr_name, const ColumnConst * id_col)
{
const auto default_col_untyped = block.getByPosition(arguments[3]).column.get();
if (const auto default_col = checkAndGetColumn<ColumnString>(default_col_untyped))
{
/// const ids, vector defaults
const PaddedPODArray<UInt64> ids(1, id_col->getValue<UInt64>());
PaddedPODArray<UInt8> flags(1);
dictionary->has(ids, flags);
if (flags.front())
{
auto out = ColumnString::create();
dictionary->getString(attr_name, ids, String(), out.get());
block.getByPosition(result).column = DataTypeString().createColumnConst(id_col->size(), out->getDataAt(0).toString());
}
else
block.getByPosition(result).column = block.getByPosition(arguments[3]).column; // reuse the default column
}
else if (const auto default_col_const = checkAndGetColumnConstStringOrFixedString(default_col_untyped))
{
/// const ids, const defaults
const PaddedPODArray<UInt64> ids(1, id_col->getValue<UInt64>());
auto out = ColumnString::create();
String def = default_col_const->getValue<String>();
dictionary->getString(attr_name, ids, def, out.get());
block.getByPosition(result).column = DataTypeString().createColumnConst(id_col->size(), out->getDataAt(0).toString());
}
else
throw Exception{"Fourth argument of function " + getName() + " must be String", ErrorCodes::ILLEGAL_COLUMN};
}
template <typename DictionaryType>
bool executeDispatchComplex(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const ColumnWithTypeAndName & key_col_with_type = block.getByPosition(arguments[2]);
/// Functions in external dictionaries_loader only support full-value (not constant) columns with keys.
ColumnPtr key_col = key_col_with_type.column->convertToFullColumnIfConst();
const auto & key_columns = typeid_cast<const ColumnTuple &>(*key_col).getColumnsCopy();
const auto & key_types = static_cast<const DataTypeTuple &>(*key_col_with_type.type).getElements();
auto out = ColumnString::create();
const auto default_col_untyped = block.getByPosition(arguments[3]).column.get();
if (const auto default_col = checkAndGetColumn<ColumnString>(default_col_untyped))
{
dict->getString(attr_name, key_columns, key_types, default_col, out.get());
}
else if (const auto default_col_const = checkAndGetColumnConstStringOrFixedString(default_col_untyped))
{
String def = default_col_const->getValue<String>();
dict->getString(attr_name, key_columns, key_types, def, out.get());
}
else
throw Exception{"Fourth argument of function " + getName() + " must be String", ErrorCodes::ILLEGAL_COLUMN};
block.getByPosition(result).column = std::move(out);
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
};
template <typename DataType> struct DictGetTraits;
#define DECLARE_DICT_GET_TRAITS(TYPE, DATA_TYPE) \
template <> struct DictGetTraits<DATA_TYPE>\
{\
template <typename DictionaryType>\
static void get(\
const DictionaryType * dict, const std::string & name, const PaddedPODArray<UInt64> & ids,\
PaddedPODArray<TYPE> & out)\
{\
dict->get##TYPE(name, ids, out);\
}\
template <typename DictionaryType>\
static void get(\
const DictionaryType * dict, const std::string & name, const Columns & key_columns,\
const DataTypes & key_types, PaddedPODArray<TYPE> & out)\
{\
dict->get##TYPE(name, key_columns, key_types, out);\
}\
template <typename DictionaryType>\
static void get(\
const DictionaryType * dict, const std::string & name, const PaddedPODArray<UInt64> & ids,\
const PaddedPODArray<Int64> & dates, PaddedPODArray<TYPE> & out)\
{\
dict->get##TYPE(name, ids, dates, out);\
}\
template <typename DictionaryType, typename DefaultsType>\
static void getOrDefault(\
const DictionaryType * dict, const std::string & name, const PaddedPODArray<UInt64> & ids,\
const DefaultsType & def, PaddedPODArray<TYPE> & out)\
{\
dict->get##TYPE(name, ids, def, out);\
}\
template <typename DictionaryType, typename DefaultsType>\
static void getOrDefault(\
const DictionaryType * dict, const std::string & name, const Columns & key_columns,\
const DataTypes & key_types, const DefaultsType & def, PaddedPODArray<TYPE> & out)\
{\
dict->get##TYPE(name, key_columns, key_types, def, out);\
}\
};
DECLARE_DICT_GET_TRAITS(UInt8, DataTypeUInt8)
DECLARE_DICT_GET_TRAITS(UInt16, DataTypeUInt16)
DECLARE_DICT_GET_TRAITS(UInt32, DataTypeUInt32)
DECLARE_DICT_GET_TRAITS(UInt64, DataTypeUInt64)
DECLARE_DICT_GET_TRAITS(Int8, DataTypeInt8)
DECLARE_DICT_GET_TRAITS(Int16, DataTypeInt16)
DECLARE_DICT_GET_TRAITS(Int32, DataTypeInt32)
DECLARE_DICT_GET_TRAITS(Int64, DataTypeInt64)
DECLARE_DICT_GET_TRAITS(Float32, DataTypeFloat32)
DECLARE_DICT_GET_TRAITS(Float64, DataTypeFloat64)
DECLARE_DICT_GET_TRAITS(UInt16, DataTypeDate)
DECLARE_DICT_GET_TRAITS(UInt32, DataTypeDateTime)
DECLARE_DICT_GET_TRAITS(UInt128, DataTypeUUID)
#undef DECLARE_DICT_GET_TRAITS
template <typename T> struct DictGetTraits<DataTypeDecimal<T>>
{
static constexpr bool is_dec32 = std::is_same_v<T, Decimal32>;
static constexpr bool is_dec64 = std::is_same_v<T, Decimal64>;
static constexpr bool is_dec128 = std::is_same_v<T, Decimal128>;
template <typename DictionaryType>
static void get(const DictionaryType * dict, const std::string & name, const PaddedPODArray<UInt64> & ids,
DecimalPaddedPODArray<T> & out)
{
if constexpr (is_dec32) dict->getDecimal32(name, ids, out);
if constexpr (is_dec64) dict->getDecimal64(name, ids, out);
if constexpr (is_dec128) dict->getDecimal128(name, ids, out);
}
template <typename DictionaryType>
static void get(const DictionaryType * dict, const std::string & name, const Columns & key_columns, const DataTypes & key_types,
DecimalPaddedPODArray<T> & out)
{
if constexpr (is_dec32) dict->getDecimal32(name, key_columns, key_types, out);
if constexpr (is_dec64) dict->getDecimal64(name, key_columns, key_types, out);
if constexpr (is_dec128) dict->getDecimal128(name, key_columns, key_types, out);
}
template <typename DictionaryType>
static void get(const DictionaryType * dict, const std::string & name, const PaddedPODArray<UInt64> & ids,
const PaddedPODArray<Int64> & dates, DecimalPaddedPODArray<T> & out)
{
if constexpr (is_dec32) dict->getDecimal32(name, ids, dates, out);
if constexpr (is_dec64) dict->getDecimal64(name, ids, dates, out);
if constexpr (is_dec128) dict->getDecimal128(name, ids, dates, out);
}
template <typename DictionaryType, typename DefaultsType>
static void getOrDefault(const DictionaryType * dict, const std::string & name, const PaddedPODArray<UInt64> & ids,
const DefaultsType & def, DecimalPaddedPODArray<T> & out)
{
if constexpr (is_dec32) dict->getDecimal32(name, ids, def, out);
if constexpr (is_dec64) dict->getDecimal64(name, ids, def, out);
if constexpr (is_dec128) dict->getDecimal128(name, ids, def, out);
}
template <typename DictionaryType, typename DefaultsType>
static void getOrDefault(const DictionaryType * dict, const std::string & name, const Columns & key_columns,
const DataTypes & key_types, const DefaultsType & def, DecimalPaddedPODArray<T> & out)
{
if constexpr (is_dec32) dict->getDecimal32(name, key_columns, key_types, def, out);
if constexpr (is_dec64) dict->getDecimal64(name, key_columns, key_types, def, out);
if constexpr (is_dec128) dict->getDecimal128(name, key_columns, key_types, def, out);
}
};
template <typename DataType, typename Name>
class FunctionDictGet final : public IFunction
{
using Type = typename DataType::FieldType;
using ColVec = std::conditional_t<IsDecimalNumber<Type>, ColumnDecimal<Type>, ColumnVector<Type>>;
public:
static constexpr auto name = Name::name;
static FunctionPtr create(const Context & context, UInt32 dec_scale = 0)
{
return std::make_shared<FunctionDictGet>(context.getExternalDictionariesLoader(), context, dec_scale);
}
FunctionDictGet(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_, UInt32 dec_scale = 0)
: dictionaries_loader(dictionaries_loader_)
, context(context_)
, decimal_scale(dec_scale)
{}
String getName() const override { return name; }
private:
bool isVariadic() const override { return true; }
size_t getNumberOfArguments() const override { return 0; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
bool isInjective(const Block & sample_block) override
{
return isDictGetFunctionInjective(dictionaries_loader, sample_block);
}
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (arguments.size() != 3 && arguments.size() != 4)
throw Exception{"Function " + getName() + " takes 3 or 4 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
if (!isString(arguments[0]))
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!isString(arguments[1]))
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[2]).isUInt64() &&
!isTuple(arguments[2]))
throw Exception{"Illegal type " + arguments[2]->getName() + " of third argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (arguments.size() == 4)
{
const auto range_argument = arguments[3].get();
if (!(range_argument->isValueRepresentedByInteger() &&
range_argument->getSizeOfValueInMemory() <= sizeof(Int64)))
throw Exception{"Illegal type " + range_argument->getName() + " of fourth argument of function " + getName()
+ ", must be convertible to " + TypeName<Int64>::get() + ".",
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
if constexpr (IsDataTypeDecimal<DataType>)
return std::make_shared<DataType>(DataType::maxPrecision(), decimal_scale);
else
return std::make_shared<DataType>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictGet, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatch<FlatDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<HashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<CacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyHashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyCacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<TrieDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<SimplePolygonDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchRange<RangeHashedDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatch(Block & block, const ColumnNumbers & arguments, const size_t result,
const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (arguments.size() != 3)
throw Exception{"Function " + getName() + " for dictionary of type " + dict->getTypeName() +
" requires exactly 3 arguments.", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const auto id_col_untyped = block.getByPosition(arguments[2]).column.get();
if (const auto id_col = checkAndGetColumn<ColumnUInt64>(id_col_untyped))
{
typename ColVec::MutablePtr out;
if constexpr (IsDataTypeDecimal<DataType>)
out = ColVec::create(id_col->size(), decimal_scale);
else
out = ColVec::create(id_col->size());
const auto & ids = id_col->getData();
auto & data = out->getData();
DictGetTraits<DataType>::get(dict, attr_name, ids, data);
block.getByPosition(result).column = std::move(out);
}
else if (const auto id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(id_col_untyped))
{
const PaddedPODArray<UInt64> ids(1, id_col_const->getValue<UInt64>());
if constexpr (IsDataTypeDecimal<DataType>)
{
DecimalPaddedPODArray<Type> data(1, decimal_scale);
DictGetTraits<DataType>::get(dict, attr_name, ids, data);
block.getByPosition(result).column =
DataType(DataType::maxPrecision(), decimal_scale).createColumnConst(
id_col_const->size(), toField(data.front(), decimal_scale));
}
else
{
PaddedPODArray<Type> data(1);
DictGetTraits<DataType>::get(dict, attr_name, ids, data);
block.getByPosition(result).column = DataTypeNumber<Type>().createColumnConst(id_col_const->size(), toField(data.front()));
}
}
else
throw Exception{"Third argument of function " + getName() + " must be UInt64", ErrorCodes::ILLEGAL_COLUMN};
return true;
}
template <typename DictionaryType>
bool executeDispatchComplex(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (arguments.size() != 3)
throw Exception{"Function " + getName() + " for dictionary of type " + dict->getTypeName() +
" requires exactly 3 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const ColumnWithTypeAndName & key_col_with_type = block.getByPosition(arguments[2]);
/// Functions in external dictionaries_loader only support full-value (not constant) columns with keys.
ColumnPtr key_col = key_col_with_type.column->convertToFullColumnIfConst();
if (checkColumn<ColumnTuple>(key_col.get()))
{
const auto & key_columns = assert_cast<const ColumnTuple &>(*key_col).getColumnsCopy();
const auto & key_types = static_cast<const DataTypeTuple &>(*key_col_with_type.type).getElements();
typename ColVec::MutablePtr out;
if constexpr (IsDataTypeDecimal<DataType>)
out = ColVec::create(key_columns.front()->size(), decimal_scale);
else
out = ColVec::create(key_columns.front()->size());
auto & data = out->getData();
DictGetTraits<DataType>::get(dict, attr_name, key_columns, key_types, data);
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Third argument of function " + getName() + " must be " + dict->getKeyDescription(), ErrorCodes::TYPE_MISMATCH};
return true;
}
template <typename DictionaryType>
bool executeDispatchRange(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (arguments.size() != 4)
throw Exception{"Function " + getName() + " for dictionary of type " + dict->getTypeName() +
" requires exactly 4 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const auto & id_col_untyped = block.getByPosition(arguments[2]).column;
const auto & range_col_untyped = block.getByPosition(arguments[3]).column;
PaddedPODArray<UInt64> id_col_values_storage;
PaddedPODArray<Int64> range_col_values_storage;
const auto & id_col_values = getColumnDataAsPaddedPODArray(*id_col_untyped, id_col_values_storage);
const auto & range_col_values = getColumnDataAsPaddedPODArray(*range_col_untyped, range_col_values_storage);
typename ColVec::MutablePtr out;
if constexpr (IsDataTypeDecimal<DataType>)
out = ColVec::create(id_col_untyped->size(), decimal_scale);
else
out = ColVec::create(id_col_untyped->size());
auto & data = out->getData();
DictGetTraits<DataType>::get(dict, attr_name, id_col_values, range_col_values, data);
block.getByPosition(result).column = std::move(out);
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
UInt32 decimal_scale;
};
struct NameDictGetUInt8 { static constexpr auto name = "dictGetUInt8"; };
struct NameDictGetUInt16 { static constexpr auto name = "dictGetUInt16"; };
struct NameDictGetUInt32 { static constexpr auto name = "dictGetUInt32"; };
struct NameDictGetUInt64 { static constexpr auto name = "dictGetUInt64"; };
struct NameDictGetInt8 { static constexpr auto name = "dictGetInt8"; };
struct NameDictGetInt16 { static constexpr auto name = "dictGetInt16"; };
struct NameDictGetInt32 { static constexpr auto name = "dictGetInt32"; };
struct NameDictGetInt64 { static constexpr auto name = "dictGetInt64"; };
struct NameDictGetFloat32 { static constexpr auto name = "dictGetFloat32"; };
struct NameDictGetFloat64 { static constexpr auto name = "dictGetFloat64"; };
struct NameDictGetDate { static constexpr auto name = "dictGetDate"; };
struct NameDictGetDateTime { static constexpr auto name = "dictGetDateTime"; };
struct NameDictGetUUID { static constexpr auto name = "dictGetUUID"; };
struct NameDictGetDecimal32 { static constexpr auto name = "dictGetDecimal32"; };
struct NameDictGetDecimal64 { static constexpr auto name = "dictGetDecimal64"; };
struct NameDictGetDecimal128 { static constexpr auto name = "dictGetDecimal128"; };
using FunctionDictGetUInt8 = FunctionDictGet<DataTypeUInt8, NameDictGetUInt8>;
using FunctionDictGetUInt16 = FunctionDictGet<DataTypeUInt16, NameDictGetUInt16>;
using FunctionDictGetUInt32 = FunctionDictGet<DataTypeUInt32, NameDictGetUInt32>;
using FunctionDictGetUInt64 = FunctionDictGet<DataTypeUInt64, NameDictGetUInt64>;
using FunctionDictGetInt8 = FunctionDictGet<DataTypeInt8, NameDictGetInt8>;
using FunctionDictGetInt16 = FunctionDictGet<DataTypeInt16, NameDictGetInt16>;
using FunctionDictGetInt32 = FunctionDictGet<DataTypeInt32, NameDictGetInt32>;
using FunctionDictGetInt64 = FunctionDictGet<DataTypeInt64, NameDictGetInt64>;
using FunctionDictGetFloat32 = FunctionDictGet<DataTypeFloat32, NameDictGetFloat32>;
using FunctionDictGetFloat64 = FunctionDictGet<DataTypeFloat64, NameDictGetFloat64>;
using FunctionDictGetDate = FunctionDictGet<DataTypeDate, NameDictGetDate>;
using FunctionDictGetDateTime = FunctionDictGet<DataTypeDateTime, NameDictGetDateTime>;
using FunctionDictGetUUID = FunctionDictGet<DataTypeUUID, NameDictGetUUID>;
using FunctionDictGetDecimal32 = FunctionDictGet<DataTypeDecimal<Decimal32>, NameDictGetDecimal32>;
using FunctionDictGetDecimal64 = FunctionDictGet<DataTypeDecimal<Decimal64>, NameDictGetDecimal64>;
using FunctionDictGetDecimal128 = FunctionDictGet<DataTypeDecimal<Decimal128>, NameDictGetDecimal128>;
template <typename DataType, typename Name>
class FunctionDictGetOrDefault final : public IFunction
{
using Type = typename DataType::FieldType;
using ColVec = std::conditional_t<IsDecimalNumber<Type>, ColumnDecimal<Type>, ColumnVector<Type>>;
public:
static constexpr auto name = Name::name;
static FunctionPtr create(const Context & context, UInt32 dec_scale = 0)
{
return std::make_shared<FunctionDictGetOrDefault>(context.getExternalDictionariesLoader(), context, dec_scale);
}
FunctionDictGetOrDefault(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_, UInt32 dec_scale = 0)
: dictionaries_loader(dictionaries_loader_)
, context(context_)
, decimal_scale(dec_scale)
{}
String getName() const override { return name; }
private:
size_t getNumberOfArguments() const override { return 4; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (!isString(arguments[0]))
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!isString(arguments[1]))
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[2]).isUInt64() &&
!isTuple(arguments[2]))
throw Exception{"Illegal type " + arguments[2]->getName() + " of third argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!checkAndGetDataType<DataType>(arguments[3].get()))
throw Exception{"Illegal type " + arguments[3]->getName() + " of fourth argument of function " + getName()
+ ", must be " + TypeName<Type>::get() + ".", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if constexpr (IsDataTypeDecimal<DataType>)
return std::make_shared<DataType>(DataType::maxPrecision(), decimal_scale);
else
return std::make_shared<DataType>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictGet, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatch<FlatDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<HashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<CacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyHashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<ComplexKeyCacheDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<SimplePolygonDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatchComplex<TrieDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatch(Block & block, const ColumnNumbers & arguments, const size_t result,
const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const auto id_col_untyped = block.getByPosition(arguments[2]).column.get();
if (const auto id_col = checkAndGetColumn<ColumnUInt64>(id_col_untyped))
executeDispatch(block, arguments, result, dict, attr_name, id_col);
else if (const auto id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(id_col_untyped))
executeDispatch(block, arguments, result, dict, attr_name, id_col_const);
else
throw Exception{"Third argument of function " + getName() + " must be UInt64", ErrorCodes::ILLEGAL_COLUMN};
return true;
}
template <typename DictionaryType>
void executeDispatch(
Block & block, const ColumnNumbers & arguments, const size_t result, const DictionaryType * dictionary,
const std::string & attr_name, const ColumnUInt64 * id_col)
{
const auto default_col_untyped = block.getByPosition(arguments[3]).column.get();
if (const auto default_col = checkAndGetColumn<ColVec>(default_col_untyped))
{
/// vector ids, vector defaults
typename ColVec::MutablePtr out;
if constexpr (IsDataTypeDecimal<DataType>)
out = ColVec::create(id_col->size(), decimal_scale);
else
out = ColVec::create(id_col->size());
const auto & ids = id_col->getData();
auto & data = out->getData();
const auto & defs = default_col->getData();
DictGetTraits<DataType>::getOrDefault(dictionary, attr_name, ids, defs, data);
block.getByPosition(result).column = std::move(out);
}
else if (const auto default_col_const = checkAndGetColumnConst<ColVec>(default_col_untyped))
{
/// vector ids, const defaults
typename ColVec::MutablePtr out;
if constexpr (IsDataTypeDecimal<DataType>)
out = ColVec::create(id_col->size(), decimal_scale);
else
out = ColVec::create(id_col->size());
const auto & ids = id_col->getData();
auto & data = out->getData();
const auto def = default_col_const->template getValue<Type>();
DictGetTraits<DataType>::getOrDefault(dictionary, attr_name, ids, def, data);
block.getByPosition(result).column = std::move(out);
}
else
throw Exception{"Fourth argument of function " + getName() + " must be " + TypeName<Type>::get(), ErrorCodes::ILLEGAL_COLUMN};
}
template <typename DictionaryType>
void executeDispatch(
Block & block, const ColumnNumbers & arguments, const size_t result, const DictionaryType * dictionary,
const std::string & attr_name, const ColumnConst * id_col)
{
const auto default_col_untyped = block.getByPosition(arguments[3]).column.get();
if (const auto default_col = checkAndGetColumn<ColVec>(default_col_untyped))
{
/// const ids, vector defaults
const PaddedPODArray<UInt64> ids(1, id_col->getValue<UInt64>());
PaddedPODArray<UInt8> flags(1);
dictionary->has(ids, flags);
if (flags.front())
{
if constexpr (IsDataTypeDecimal<DataType>)
{
DecimalPaddedPODArray<Type> data(1, decimal_scale);
DictGetTraits<DataType>::getOrDefault(dictionary, attr_name, ids, Type(), data);
block.getByPosition(result).column =
DataType(DataType::maxPrecision(), decimal_scale).createColumnConst(
id_col->size(), toField(data.front(), decimal_scale));
}
else
{
PaddedPODArray<Type> data(1);
DictGetTraits<DataType>::getOrDefault(dictionary, attr_name, ids, Type(), data);
block.getByPosition(result).column = DataType().createColumnConst(id_col->size(), toField(data.front()));
}
}
else
block.getByPosition(result).column = block.getByPosition(arguments[3]).column; // reuse the default column
}
else if (const auto default_col_const = checkAndGetColumnConst<ColVec>(default_col_untyped))
{
/// const ids, const defaults
const PaddedPODArray<UInt64> ids(1, id_col->getValue<UInt64>());
if constexpr (IsDataTypeDecimal<DataType>)
{
DecimalPaddedPODArray<Type> data(1, decimal_scale);
const auto & def = default_col_const->template getValue<Type>();
DictGetTraits<DataType>::getOrDefault(dictionary, attr_name, ids, def, data);
block.getByPosition(result).column =
DataType(DataType::maxPrecision(), decimal_scale).createColumnConst(
id_col->size(), toField(data.front(), decimal_scale));
}
else
{
PaddedPODArray<Type> data(1);
const auto & def = default_col_const->template getValue<Type>();
DictGetTraits<DataType>::getOrDefault(dictionary, attr_name, ids, def, data);
block.getByPosition(result).column = DataType().createColumnConst(id_col->size(), toField(data.front()));
}
}
else
throw Exception{"Fourth argument of function " + getName() + " must be " + TypeName<Type>::get(), ErrorCodes::ILLEGAL_COLUMN};
}
template <typename DictionaryType>
bool executeDispatchComplex(
Block & block, const ColumnNumbers & arguments, const size_t result, const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
const auto attr_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[1]).column.get());
if (!attr_name_col)
throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
String attr_name = attr_name_col->getValue<String>();
const ColumnWithTypeAndName & key_col_with_type = block.getByPosition(arguments[2]);
/// Functions in external dictionaries_loader only support full-value (not constant) columns with keys.
ColumnPtr key_col = key_col_with_type.column->convertToFullColumnIfConst();
const auto & key_columns = typeid_cast<const ColumnTuple &>(*key_col).getColumnsCopy();
const auto & key_types = static_cast<const DataTypeTuple &>(*key_col_with_type.type).getElements();
/// @todo detect when all key columns are constant
const auto rows = key_col->size();
typename ColVec::MutablePtr out;
if constexpr (IsDataTypeDecimal<DataType>)
out = ColVec::create(rows, decimal_scale);
else
out = ColVec::create(rows);
auto & data = out->getData();
const auto default_col_untyped = block.getByPosition(arguments[3]).column.get();
if (const auto default_col = checkAndGetColumn<ColVec>(default_col_untyped))
{
/// const defaults
const auto & defs = default_col->getData();
DictGetTraits<DataType>::getOrDefault(dict, attr_name, key_columns, key_types, defs, data);
}
else if (const auto default_col_const = checkAndGetColumnConst<ColVec>(default_col_untyped))
{
const auto def = default_col_const->template getValue<Type>();
DictGetTraits<DataType>::getOrDefault(dict, attr_name, key_columns, key_types, def, data);
}
else
throw Exception{"Fourth argument of function " + getName() + " must be " + TypeName<Type>::get(), ErrorCodes::ILLEGAL_COLUMN};
block.getByPosition(result).column = std::move(out);
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
UInt32 decimal_scale;
};
struct NameDictGetUInt8OrDefault { static constexpr auto name = "dictGetUInt8OrDefault"; };
struct NameDictGetUInt16OrDefault { static constexpr auto name = "dictGetUInt16OrDefault"; };
struct NameDictGetUInt32OrDefault { static constexpr auto name = "dictGetUInt32OrDefault"; };
struct NameDictGetUInt64OrDefault { static constexpr auto name = "dictGetUInt64OrDefault"; };
struct NameDictGetInt8OrDefault { static constexpr auto name = "dictGetInt8OrDefault"; };
struct NameDictGetInt16OrDefault { static constexpr auto name = "dictGetInt16OrDefault"; };
struct NameDictGetInt32OrDefault { static constexpr auto name = "dictGetInt32OrDefault"; };
struct NameDictGetInt64OrDefault { static constexpr auto name = "dictGetInt64OrDefault"; };
struct NameDictGetFloat32OrDefault { static constexpr auto name = "dictGetFloat32OrDefault"; };
struct NameDictGetFloat64OrDefault { static constexpr auto name = "dictGetFloat64OrDefault"; };
struct NameDictGetDateOrDefault { static constexpr auto name = "dictGetDateOrDefault"; };
struct NameDictGetDateTimeOrDefault { static constexpr auto name = "dictGetDateTimeOrDefault"; };
struct NameDictGetUUIDOrDefault { static constexpr auto name = "dictGetUUIDOrDefault"; };
struct NameDictGetDecimal32OrDefault { static constexpr auto name = "dictGetDecimal32OrDefault"; };
struct NameDictGetDecimal64OrDefault { static constexpr auto name = "dictGetDecimal64OrDefault"; };
struct NameDictGetDecimal128OrDefault { static constexpr auto name = "dictGetDecimal128OrDefault"; };
using FunctionDictGetUInt8OrDefault = FunctionDictGetOrDefault<DataTypeUInt8, NameDictGetUInt8OrDefault>;
using FunctionDictGetUInt16OrDefault = FunctionDictGetOrDefault<DataTypeUInt16, NameDictGetUInt16OrDefault>;
using FunctionDictGetUInt32OrDefault = FunctionDictGetOrDefault<DataTypeUInt32, NameDictGetUInt32OrDefault>;
using FunctionDictGetUInt64OrDefault = FunctionDictGetOrDefault<DataTypeUInt64, NameDictGetUInt64OrDefault>;
using FunctionDictGetInt8OrDefault = FunctionDictGetOrDefault<DataTypeInt8, NameDictGetInt8OrDefault>;
using FunctionDictGetInt16OrDefault = FunctionDictGetOrDefault<DataTypeInt16, NameDictGetInt16OrDefault>;
using FunctionDictGetInt32OrDefault = FunctionDictGetOrDefault<DataTypeInt32, NameDictGetInt32OrDefault>;
using FunctionDictGetInt64OrDefault = FunctionDictGetOrDefault<DataTypeInt64, NameDictGetInt64OrDefault>;
using FunctionDictGetFloat32OrDefault = FunctionDictGetOrDefault<DataTypeFloat32, NameDictGetFloat32OrDefault>;
using FunctionDictGetFloat64OrDefault = FunctionDictGetOrDefault<DataTypeFloat64, NameDictGetFloat64OrDefault>;
using FunctionDictGetDateOrDefault = FunctionDictGetOrDefault<DataTypeDate, NameDictGetDateOrDefault>;
using FunctionDictGetDateTimeOrDefault = FunctionDictGetOrDefault<DataTypeDateTime, NameDictGetDateTimeOrDefault>;
using FunctionDictGetUUIDOrDefault = FunctionDictGetOrDefault<DataTypeUUID, NameDictGetUUIDOrDefault>;
using FunctionDictGetDecimal32OrDefault = FunctionDictGetOrDefault<DataTypeDecimal<Decimal32>, NameDictGetDecimal32OrDefault>;
using FunctionDictGetDecimal64OrDefault = FunctionDictGetOrDefault<DataTypeDecimal<Decimal64>, NameDictGetDecimal64OrDefault>;
using FunctionDictGetDecimal128OrDefault = FunctionDictGetOrDefault<DataTypeDecimal<Decimal128>, NameDictGetDecimal128OrDefault>;
/// This variant of function derives the result type automatically.
class FunctionDictGetNoType final : public IFunction
{
public:
static constexpr auto name = "dictGet";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictGetNoType>(context.getExternalDictionariesLoader(), context);
}
FunctionDictGetNoType(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_) : dictionaries_loader(dictionaries_loader_), context(context_) {}
String getName() const override { return name; }
private:
bool isVariadic() const override { return true; }
size_t getNumberOfArguments() const override { return 0; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
bool isInjective(const Block & sample_block) override
{
return isDictGetFunctionInjective(dictionaries_loader, sample_block);
}
DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override
{
if (arguments.size() != 3 && arguments.size() != 4)
throw Exception{"Function " + getName() + " takes 3 or 4 arguments", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
String dict_name;
if (auto name_col = checkAndGetColumnConst<ColumnString>(arguments[0].column.get()))
{
dict_name = name_col->getValue<String>();
}
else
throw Exception{"Illegal type " + arguments[0].type->getName() + " of first argument of function " + getName()
+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
String attr_name;
if (auto name_col = checkAndGetColumnConst<ColumnString>(arguments[1].column.get()))
{
attr_name = name_col->getValue<String>();
}
else
throw Exception{"Illegal type " + arguments[1].type->getName() + " of second argument of function " + getName()
+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[2].type).isUInt64() &&
!isTuple(arguments[2].type))
throw Exception{"Illegal type " + arguments[2].type->getName() + " of third argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (arguments.size() == 4)
{
const auto range_argument = arguments[3].type.get();
if (!(range_argument->isValueRepresentedByInteger() &&
range_argument->getSizeOfValueInMemory() <= sizeof(Int64)))
throw Exception{"Illegal type " + range_argument->getName() + " of fourth argument of function " + getName()
+ ", must be convertible to " + TypeName<Int64>::get() + ".", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
}
auto dict = dictionaries_loader.getDictionary(dict_name);
const DictionaryStructure & structure = dict->getStructure();
for (const auto idx : ext::range(0, structure.attributes.size()))
{
const DictionaryAttribute & attribute = structure.attributes[idx];
if (attribute.name == attr_name)
{
WhichDataType dt = attribute.type;
switch (dt.idx)
{
case TypeIndex::String:
case TypeIndex::FixedString:
impl = FunctionDictGetString::create(context);
break;
case TypeIndex::UInt8:
impl = FunctionDictGetUInt8::create(context);
break;
case TypeIndex::UInt16:
impl = FunctionDictGetUInt16::create(context);
break;
case TypeIndex::UInt32:
impl = FunctionDictGetUInt32::create(context);
break;
case TypeIndex::UInt64:
impl = FunctionDictGetUInt64::create(context);
break;
case TypeIndex::Int8:
impl = FunctionDictGetInt8::create(context);
break;
case TypeIndex::Int16:
impl = FunctionDictGetInt16::create(context);
break;
case TypeIndex::Int32:
impl = FunctionDictGetInt32::create(context);
break;
case TypeIndex::Int64:
impl = FunctionDictGetInt64::create(context);
break;
case TypeIndex::Float32:
impl = FunctionDictGetFloat32::create(context);
break;
case TypeIndex::Float64:
impl = FunctionDictGetFloat64::create(context);
break;
case TypeIndex::Date:
impl = FunctionDictGetDate::create(context);
break;
case TypeIndex::DateTime:
impl = FunctionDictGetDateTime::create(context);
break;
case TypeIndex::UUID:
impl = FunctionDictGetUUID::create(context);
break;
case TypeIndex::Decimal32:
impl = FunctionDictGetDecimal32::create(context, getDecimalScale(*attribute.type));
break;
case TypeIndex::Decimal64:
impl = FunctionDictGetDecimal64::create(context, getDecimalScale(*attribute.type));
break;
case TypeIndex::Decimal128:
impl = FunctionDictGetDecimal128::create(context, getDecimalScale(*attribute.type));
break;
default:
throw Exception("Unknown dictGet type", ErrorCodes::UNKNOWN_TYPE);
}
return attribute.type;
}
}
throw Exception{"No such attribute '" + attr_name + "'", ErrorCodes::BAD_ARGUMENTS};
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
impl->executeImpl(block, arguments, result, input_rows_count);
}
private:
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
mutable FunctionPtr impl; // underlying function used by dictGet function without explicit type info
};
class FunctionDictGetNoTypeOrDefault final : public IFunction
{
public:
static constexpr auto name = "dictGetOrDefault";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictGetNoTypeOrDefault>(context.getExternalDictionariesLoader(), context);
}
FunctionDictGetNoTypeOrDefault(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_) : dictionaries_loader(dictionaries_loader_), context(context_) {}
String getName() const override { return name; }
private:
size_t getNumberOfArguments() const override { return 4; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
bool isInjective(const Block & sample_block) override
{
return isDictGetFunctionInjective(dictionaries_loader, sample_block);
}
DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override
{
String dict_name;
if (auto name_col = checkAndGetColumnConst<ColumnString>(arguments[0].column.get()))
{
dict_name = name_col->getValue<String>();
}
else
throw Exception{"Illegal type " + arguments[0].type->getName() + " of first argument of function " + getName()
+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
String attr_name;
if (auto name_col = checkAndGetColumnConst<ColumnString>(arguments[1].column.get()))
{
attr_name = name_col->getValue<String>();
}
else
throw Exception{"Illegal type " + arguments[1].type->getName() + " of second argument of function " + getName()
+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[2].type).isUInt64() &&
!isTuple(arguments[2].type))
throw Exception{"Illegal type " + arguments[2].type->getName() + " of third argument of function " + getName()
+ ", must be UInt64 or tuple(...).", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
auto dict = dictionaries_loader.getDictionary(dict_name);
const DictionaryStructure & structure = dict->getStructure();
for (const auto idx : ext::range(0, structure.attributes.size()))
{
const DictionaryAttribute & attribute = structure.attributes[idx];
if (attribute.name == attr_name)
{
auto arg_type = arguments[3].type;
WhichDataType dt = attribute.type;
if ((arg_type->getTypeId() != dt.idx) || (dt.isStringOrFixedString() && !isString(arg_type)))
throw Exception{"Illegal type " + arg_type->getName() + " of fourth argument of function " + getName() +
", must be " + getTypeName(dt.idx) + ".", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
switch (dt.idx)
{
case TypeIndex::String:
impl = FunctionDictGetStringOrDefault::create(context);
break;
case TypeIndex::UInt8:
impl = FunctionDictGetUInt8OrDefault::create(context);
break;
case TypeIndex::UInt16:
impl = FunctionDictGetUInt16OrDefault::create(context);
break;
case TypeIndex::UInt32:
impl = FunctionDictGetUInt32OrDefault::create(context);
break;
case TypeIndex::UInt64:
impl = FunctionDictGetUInt64OrDefault::create(context);
break;
case TypeIndex::Int8:
impl = FunctionDictGetInt8OrDefault::create(context);
break;
case TypeIndex::Int16:
impl = FunctionDictGetInt16OrDefault::create(context);
break;
case TypeIndex::Int32:
impl = FunctionDictGetInt32OrDefault::create(context);
break;
case TypeIndex::Int64:
impl = FunctionDictGetInt64OrDefault::create(context);
break;
case TypeIndex::Float32:
impl = FunctionDictGetFloat32OrDefault::create(context);
break;
case TypeIndex::Float64:
impl = FunctionDictGetFloat64OrDefault::create(context);
break;
case TypeIndex::Date:
impl = FunctionDictGetDateOrDefault::create(context);
break;
case TypeIndex::DateTime:
impl = FunctionDictGetDateTimeOrDefault::create(context);
break;
case TypeIndex::UUID:
impl = FunctionDictGetUUIDOrDefault::create(context);
break;
case TypeIndex::Decimal32:
impl = FunctionDictGetDecimal32OrDefault::create(context, getDecimalScale(*attribute.type));
break;
case TypeIndex::Decimal64:
impl = FunctionDictGetDecimal64OrDefault::create(context, getDecimalScale(*attribute.type));
break;
case TypeIndex::Decimal128:
impl = FunctionDictGetDecimal128OrDefault::create(context, getDecimalScale(*attribute.type));
break;
default:
throw Exception("Unknown dictGetOrDefault type", ErrorCodes::UNKNOWN_TYPE);
}
return attribute.type;
}
}
throw Exception{"No such attribute '" + attr_name + "'", ErrorCodes::BAD_ARGUMENTS};
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
impl->executeImpl(block, arguments, result, input_rows_count);
}
private:
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
mutable FunctionPtr impl; // underlying function used by dictGet function without explicit type info
};
/// Functions to work with hierarchies.
class FunctionDictGetHierarchy final : public IFunction
{
public:
static constexpr auto name = "dictGetHierarchy";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictGetHierarchy>(context.getExternalDictionariesLoader(), context);
}
FunctionDictGetHierarchy(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_)
: dictionaries_loader(dictionaries_loader_)
, context(context_) {}
String getName() const override { return name; }
private:
size_t getNumberOfArguments() const override { return 2; }
bool isInjective(const Block & /*sample_block*/) override { return true; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0}; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (!isString(arguments[0]))
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[1]).isUInt64())
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName()
+ ", must be UInt64.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
return std::make_shared<DataTypeArray>(std::make_shared<DataTypeUInt64>());
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictGetHierarchy, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatch<FlatDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<HashedDictionary>(block, arguments, result, dict_ptr) &&
!executeDispatch<CacheDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatch(Block & block, const ColumnNumbers & arguments, const size_t result,
const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (!dict->hasHierarchy())
throw Exception{"Dictionary does not have a hierarchy", ErrorCodes::UNSUPPORTED_METHOD};
const auto get_hierarchies = [&] (const PaddedPODArray<UInt64> & in, PaddedPODArray<UInt64> & out, PaddedPODArray<UInt64> & offsets)
{
const auto size = in.size();
/// copy of `in` array
auto in_array = std::make_unique<PaddedPODArray<UInt64>>(std::begin(in), std::end(in));
/// used for storing and handling result of ::toParent call
auto out_array = std::make_unique<PaddedPODArray<UInt64>>(size);
/// resulting hierarchies
std::vector<std::vector<IDictionary::Key>> hierarchies(size); /// TODO Bad code, poor performance.
/// total number of non-zero elements, used for allocating all the required memory upfront
size_t total_count = 0;
while (true)
{
auto all_zeroes = true;
/// erase zeroed identifiers, store non-zeroed ones
for (const auto i : ext::range(0, size))
{
const auto id = (*in_array)[i];
if (0 == id)
continue;
auto & hierarchy = hierarchies[i];
/// Checking for loop
if (std::find(std::begin(hierarchy), std::end(hierarchy), id) != std::end(hierarchy))
continue;
all_zeroes = false;
/// place id at it's corresponding place
hierarchy.push_back(id);
++total_count;
}
if (all_zeroes)
break;
/// translate all non-zero identifiers at once
dict->toParent(*in_array, *out_array);
/// we're going to use the `in_array` from this iteration as `out_array` on the next one
std::swap(in_array, out_array);
}
out.reserve(total_count);
offsets.resize(size);
for (const auto i : ext::range(0, size))
{
const auto & ids = hierarchies[i];
out.insert_assume_reserved(std::begin(ids), std::end(ids));
offsets[i] = out.size();
}
};
const auto id_col_untyped = block.getByPosition(arguments[1]).column.get();
if (const auto id_col = checkAndGetColumn<ColumnUInt64>(id_col_untyped))
{
const auto & in = id_col->getData();
auto backend = ColumnUInt64::create();
auto offsets = ColumnArray::ColumnOffsets::create();
get_hierarchies(in, backend->getData(), offsets->getData());
block.getByPosition(result).column = ColumnArray::create(std::move(backend), std::move(offsets));
}
else if (const auto id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(id_col_untyped))
{
const PaddedPODArray<UInt64> in(1, id_col_const->getValue<UInt64>());
auto backend = ColumnUInt64::create();
auto offsets = ColumnArray::ColumnOffsets::create();
get_hierarchies(in, backend->getData(), offsets->getData());
auto array = ColumnArray::create(std::move(backend), std::move(offsets));
block.getByPosition(result).column = block.getByPosition(result).type->createColumnConst(id_col_const->size(), (*array)[0].get<Array>());
}
else
throw Exception{"Second argument of function " + getName() + " must be UInt64", ErrorCodes::ILLEGAL_COLUMN};
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
};
class FunctionDictIsIn final : public IFunction
{
public:
static constexpr auto name = "dictIsIn";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionDictIsIn>(context.getExternalDictionariesLoader(), context);
}
FunctionDictIsIn(const ExternalDictionariesLoader & dictionaries_loader_, const Context & context_)
: dictionaries_loader(dictionaries_loader_)
, context(context_) {}
String getName() const override { return name; }
private:
size_t getNumberOfArguments() const override { return 3; }
bool useDefaultImplementationForConstants() const final { return true; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0}; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (!isString(arguments[0]))
throw Exception{"Illegal type " + arguments[0]->getName() + " of first argument of function " + getName()
+ ", expected a string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[1]).isUInt64())
throw Exception{"Illegal type " + arguments[1]->getName() + " of second argument of function " + getName()
+ ", must be UInt64.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
if (!WhichDataType(arguments[2]).isUInt64())
throw Exception{"Illegal type " + arguments[2]->getName() + " of third argument of function " + getName()
+ ", must be UInt64.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
return std::make_shared<DataTypeUInt8>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t input_rows_count) override
{
const auto dict_name_col = checkAndGetColumnConst<ColumnString>(block.getByPosition(arguments[0]).column.get());
if (!dict_name_col)
throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
if (input_rows_count == 0)
{
auto & elem = block.getByPosition(result);
elem.column = elem.type->createColumn();
return;
}
auto dict = dictionaries_loader.getDictionary(dict_name_col->getValue<String>());
const auto dict_ptr = dict.get();
context.checkAccess(AccessType::dictIsIn, dict_ptr->getDatabaseOrNoDatabaseTag(), dict_ptr->getName());
if (!executeDispatch<FlatDictionary>(block, arguments, result, dict_ptr)
&& !executeDispatch<HashedDictionary>(block, arguments, result, dict_ptr)
&& !executeDispatch<CacheDictionary>(block, arguments, result, dict_ptr))
throw Exception{"Unsupported dictionary type " + dict_ptr->getTypeName(), ErrorCodes::UNKNOWN_TYPE};
}
template <typename DictionaryType>
bool executeDispatch(Block & block, const ColumnNumbers & arguments, const size_t result,
const IDictionaryBase * dictionary)
{
const auto dict = typeid_cast<const DictionaryType *>(dictionary);
if (!dict)
return false;
if (!dict->hasHierarchy())
throw Exception{"Dictionary does not have a hierarchy", ErrorCodes::UNSUPPORTED_METHOD};
const auto child_id_col_untyped = block.getByPosition(arguments[1]).column.get();
const auto ancestor_id_col_untyped = block.getByPosition(arguments[2]).column.get();
if (const auto child_id_col = checkAndGetColumn<ColumnUInt64>(child_id_col_untyped))
execute(block, result, dict, child_id_col, ancestor_id_col_untyped);
else if (const auto child_id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(child_id_col_untyped))
execute(block, result, dict, child_id_col_const, ancestor_id_col_untyped);
else
throw Exception{"Illegal column " + child_id_col_untyped->getName()
+ " of second argument of function " + getName(), ErrorCodes::ILLEGAL_COLUMN};
return true;
}
template <typename DictionaryType>
bool execute(Block & block, const size_t result, const DictionaryType * dictionary,
const ColumnUInt64 * child_id_col, const IColumn * ancestor_id_col_untyped)
{
if (const auto ancestor_id_col = checkAndGetColumn<ColumnUInt64>(ancestor_id_col_untyped))
{
auto out = ColumnUInt8::create();
const auto & child_ids = child_id_col->getData();
const auto & ancestor_ids = ancestor_id_col->getData();
auto & data = out->getData();
const auto size = child_id_col->size();
data.resize(size);
dictionary->isInVectorVector(child_ids, ancestor_ids, data);
block.getByPosition(result).column = std::move(out);
}
else if (const auto ancestor_id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(ancestor_id_col_untyped))
{
auto out = ColumnUInt8::create();
const auto & child_ids = child_id_col->getData();
const auto ancestor_id = ancestor_id_col_const->getValue<UInt64>();
auto & data = out->getData();
const auto size = child_id_col->size();
data.resize(size);
dictionary->isInVectorConstant(child_ids, ancestor_id, data);
block.getByPosition(result).column = std::move(out);
}
else
{
throw Exception{"Illegal column " + ancestor_id_col_untyped->getName()
+ " of third argument of function " + getName(), ErrorCodes::ILLEGAL_COLUMN};
}
return true;
}
template <typename DictionaryType>
bool execute(Block & block, const size_t result, const DictionaryType * dictionary,
const ColumnConst * child_id_col, const IColumn * ancestor_id_col_untyped)
{
if (const auto ancestor_id_col = checkAndGetColumn<ColumnUInt64>(ancestor_id_col_untyped))
{
auto out = ColumnUInt8::create();
const auto child_id = child_id_col->getValue<UInt64>();
const auto & ancestor_ids = ancestor_id_col->getData();
auto & data = out->getData();
const auto size = child_id_col->size();
data.resize(size);
dictionary->isInConstantVector(child_id, ancestor_ids, data);
block.getByPosition(result).column = std::move(out);
}
else if (const auto ancestor_id_col_const = checkAndGetColumnConst<ColumnVector<UInt64>>(ancestor_id_col_untyped))
{
const auto child_id = child_id_col->getValue<UInt64>();
const auto ancestor_id = ancestor_id_col_const->getValue<UInt64>();
UInt8 res = 0;
dictionary->isInConstantConstant(child_id, ancestor_id, res);
block.getByPosition(result).column = DataTypeUInt8().createColumnConst(child_id_col->size(), res);
}
else
throw Exception{"Illegal column " + ancestor_id_col_untyped->getName()
+ " of third argument of function " + getName(), ErrorCodes::ILLEGAL_COLUMN};
return true;
}
const ExternalDictionariesLoader & dictionaries_loader;
const Context & context;
};
template <typename T>
static const PaddedPODArray<T> & getColumnDataAsPaddedPODArray(const IColumn & column, PaddedPODArray<T> & backup_storage)
{
if (!isColumnConst(column))
{
if (const auto vector_col = checkAndGetColumn<ColumnVector<T>>(&column))
{
return vector_col->getData();
}
}
const auto full_column = column.convertToFullColumnIfConst();
// With type conversion and const columns we need to use backup storage here
const auto size = full_column->size();
backup_storage.resize(size);
for (size_t i = 0; i < size; ++i)
backup_storage[i] = full_column->getUInt(i);
return backup_storage;
}
}
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