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https://github.com/ClickHouse/ClickHouse.git
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FunctionsExternalDictionaries refactored
This commit is contained in:
Maksim Kita
Maksim Kita
parent
a45459e095
commit
3d0778cba4
@ -40,7 +40,6 @@ void registerFunctionsExternalDictionaries(FunctionFactory & factory)
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factory.registerFunction<FunctionDictGetStringOrDefault>();
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factory.registerFunction<FunctionDictGetNoType<DictionaryGetFunctionType::get>>();
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factory.registerFunction<FunctionDictGetNoType<DictionaryGetFunctionType::getOrDefault>>();
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factory.registerFunction<FunctionDictGetNoType<DictionaryGetFunctionType::getOrNull>>();
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}
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}
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@ -9,6 +9,7 @@
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#include <DataTypes/DataTypeTuple.h>
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#include <DataTypes/DataTypeUUID.h>
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#include <DataTypes/DataTypeNullable.h>
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#include <DataTypes/DataTypeLowCardinality.h>
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#include <Common/typeid_cast.h>
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#include <Common/assert_cast.h>
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@ -118,6 +119,20 @@ public:
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return getDictionary(dict_name_col->getValue<String>())->isInjective(attr_name_col->getValue<String>());
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}
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DictionaryAttribute getDictionaryAttribute(std::shared_ptr<const IDictionaryBase> dictionary, const String& attribute_name) const
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{
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const DictionaryStructure & structure = dictionary->getStructure();
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auto find_iter = std::find_if(structure.attributes.begin(), structure.attributes.end(), [&](const auto &attribute)
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{
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return attribute.name == attribute_name;
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});
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if (find_iter == structure.attributes.end())
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throw Exception{"No such attribute '" + attribute_name + "'", ErrorCodes::BAD_ARGUMENTS};
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return *find_iter;
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}
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private:
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const Context & context;
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const ExternalDictionariesLoader & external_loader;
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@ -179,15 +194,24 @@ private:
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const ColumnWithTypeAndName & key_column_with_type = arguments[1];
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const auto key_column = key_column_with_type.column;
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const auto key_column_type = WhichDataType(key_column_with_type.type);
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if (dictionary_identifier_type == DictionaryIdentifierType::simple)
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{
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if (!key_column_type.isUInt64())
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throw Exception{"Second argument of function " + getName() + " must be " + dictionary->getStructure().getKeyDescription(),
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ErrorCodes::TYPE_MISMATCH};
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return dictionary->has({key_column}, {std::make_shared<DataTypeUInt64>()});
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}
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else if (dictionary_identifier_type == DictionaryIdentifierType::complex)
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{
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if (!key_column_type.isTuple())
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throw Exception{"Second argument of function " + getName() + " must be " + dictionary->getStructure().getKeyDescription(),
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ErrorCodes::TYPE_MISMATCH};
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/// Functions in external dictionaries_loader only support full-value (not constant) columns with keys.
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ColumnPtr key_column_full = key_column_with_type.column->convertToFullColumnIfConst();
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ColumnPtr key_column_full = key_column->convertToFullColumnIfConst();
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const auto & key_columns = typeid_cast<const ColumnTuple &>(*key_column_full).getColumnsCopy();
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const auto & key_types = static_cast<const DataTypeTuple &>(*key_column_with_type.type).getElements();
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@ -195,10 +219,7 @@ private:
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return dictionary->has(key_columns, key_types);
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}
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else
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{
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/// TODO: Add support for range
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return nullptr;
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}
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throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Has not supported for range dictionary", dictionary->getDictionaryID().getNameForLogs());
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}
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mutable FunctionDictHelper helper;
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@ -207,82 +228,66 @@ private:
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enum class DictionaryGetFunctionType
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{
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get,
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getOrDefault,
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getOrNull
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getOrDefault
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};
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template <typename DataType, typename Name, DictionaryGetFunctionType dictionary_get_function_type>
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class FunctionDictGetImpl final : public IFunction
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/// This variant of function derives the result type automatically.
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template <DictionaryGetFunctionType dictionary_get_function_type>
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class FunctionDictGetNoType final : public IFunction
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{
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using Type = typename DataType::FieldType;
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public:
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static constexpr auto name = Name::name;
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static constexpr auto name = dictionary_get_function_type == DictionaryGetFunctionType::get ? "dictGet" : "dictGetOrDefault";
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static FunctionPtr create(const Context & context, UInt32 dec_scale = 0)
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static FunctionPtr create(const Context & context)
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{
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return std::make_shared<FunctionDictGetImpl>(context, dec_scale);
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return std::make_shared<FunctionDictGetNoType>(context);
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}
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explicit FunctionDictGetImpl(const Context & context_, UInt32 dec_scale = 0)
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: helper(context_)
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, decimal_scale(dec_scale)
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{}
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explicit FunctionDictGetNoType(const Context & context_) : helper(context_) {}
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String getName() const override { return name; }
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private:
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bool isVariadic() const override { return true; }
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size_t getNumberOfArguments() const override { return 0; }
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bool isVariadic() const override { return true; }
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bool useDefaultImplementationForConstants() const final { return true; }
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ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
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bool isDeterministic() const override { return false; }
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ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
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DataTypePtr getReturnTypeImpl(const DataTypes &) const override
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bool isInjective(const ColumnsWithTypeAndName & sample_columns) const override
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{
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DataTypePtr result;
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/// TODO: Decimal will not work properly during FunctionDictGetImpl call decimal_scale will not be iniitalized.
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if constexpr (IsDataTypeDecimal<DataType>)
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result = std::make_shared<DataType>(DataType::maxPrecision(), decimal_scale);
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else
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result = std::make_shared<DataType>();
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if constexpr (dictionary_get_function_type == DictionaryGetFunctionType::getOrNull)
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{
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result = std::make_shared<DataTypeNullable>(result);
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}
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return result;
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return helper.isDictGetFunctionInjective(sample_columns);
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const override
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DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override
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{
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if (arguments.size() < 3)
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throw Exception{"Wrong argument count for function " + getName(), ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
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String dictionary_name;
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if (const auto * name_col = checkAndGetColumnConst<ColumnString>(arguments[0].column.get()))
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dictionary_name = name_col->getValue<String>();
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else
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throw Exception{"Illegal type " + arguments[0].type->getName() + " of first argument of function " + getName()
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+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
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if (const auto * name_col = checkAndGetColumnConst<ColumnString>(arguments[1].column.get()))
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attribute_name = name_col->getValue<String>();
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else
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throw Exception{"Illegal type " + arguments[1].type->getName() + " of second argument of function " + getName()
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+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
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dictionary = helper.getDictionary(dictionary_name);
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return helper.getDictionaryAttribute(dictionary, attribute_name).type;
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const override
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{
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if (input_rows_count == 0)
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return result_type->createColumn();
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const auto * dictionary_name_col = checkAndGetColumnConst<ColumnString>(arguments[0].column.get());
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if (!dictionary_name_col)
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throw Exception{"First argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
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String dictionary_name = dictionary_name_col->getValue<String>();
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auto dictionary = helper.getDictionary(dictionary_name);
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if (!dictionary)
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throw Exception("First argument of function " + getName() + " does not name a dictionary", ErrorCodes::ILLEGAL_COLUMN);
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const auto * attr_name_col = checkAndGetColumnConst<ColumnString>(arguments[1].column.get());
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if (!attr_name_col)
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throw Exception{"Second argument of function " + getName() + " must be a constant string", ErrorCodes::ILLEGAL_COLUMN};
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String attr_name = attr_name_col->getValue<String>();
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/// TODO: Use accurateCast if argument is integer
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if (!WhichDataType(arguments[2].type).isUInt64() && !isTuple(arguments[2].type))
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throw Exception{"Illegal type " + arguments[2].type->getName() + " of third argument of function "
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@ -319,19 +324,19 @@ private:
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if (dictionary_get_function_type == DictionaryGetFunctionType::getOrDefault)
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{
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if (current_arguments_index >= arguments.size())
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throw Exception{"Wrong argument count for function test " + getName(), ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
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throw Exception{"Wrong argument count for function " + getName(), ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
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default_col = arguments[current_arguments_index].column;
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}
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ColumnPtr res;
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ColumnPtr result;
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const ColumnWithTypeAndName & key_col_with_type = arguments[2];
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const auto key_column = key_col_with_type.column;
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if (dictionary_identifier_type == DictionaryIdentifierType::simple)
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{
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res = dictionary->getColumn(attr_name, result_type, {key_column}, {std::make_shared<DataTypeUInt64>()}, default_col);
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result = dictionary->getColumn(attribute_name, result_type, {key_column}, {std::make_shared<DataTypeUInt64>()}, default_col);
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}
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else if (dictionary_identifier_type == DictionaryIdentifierType::complex)
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{
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@ -341,21 +346,88 @@ private:
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const auto & key_columns = typeid_cast<const ColumnTuple &>(*key_column_full).getColumnsCopy();
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const auto & key_types = static_cast<const DataTypeTuple &>(*key_col_with_type.type).getElements();
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res = dictionary->getColumn(attr_name, result_type, key_columns, key_types, default_col);
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result = dictionary->getColumn(attribute_name, result_type, key_columns, key_types, default_col);
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}
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else if (dictionary_identifier_type == DictionaryIdentifierType::range)
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{
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res = dictionary->getColumn(
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attr_name, result_type, {key_column, range_col}, {std::make_shared<DataTypeUInt64>(), range_col_type}, default_col);
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result = dictionary->getColumn(
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attribute_name, result_type, {key_column, range_col}, {std::make_shared<DataTypeUInt64>(), range_col_type}, default_col);
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}
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else
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throw Exception{"Unknown dictionary identifier type", ErrorCodes::BAD_ARGUMENTS};
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return res;
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return result;
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}
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private:
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mutable FunctionDictHelper helper;
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UInt32 decimal_scale;
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/// Initialized in getReturnTypeImpl
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mutable std::shared_ptr<const IDictionaryBase> dictionary;
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mutable String attribute_name;
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};
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template <typename DataType, typename Name, DictionaryGetFunctionType dictionary_get_function_type>
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class FunctionDictGetImpl final : public IFunction
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{
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using Type = typename DataType::FieldType;
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public:
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static constexpr auto name = Name::name;
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static FunctionPtr create(const Context &context)
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{
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return std::make_shared<FunctionDictGetImpl>(context);
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}
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explicit FunctionDictGetImpl(const Context & context_) : impl(context_) {}
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String getName() const override { return name; }
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private:
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size_t getNumberOfArguments() const override { return 0; }
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bool isVariadic() const override { return true; }
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bool useDefaultImplementationForConstants() const final { return true; }
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bool isDeterministic() const override { return false; }
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ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
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bool isInjective(const ColumnsWithTypeAndName & sample_columns) const override
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{
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return impl.isInjective(sample_columns);
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}
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DataTypePtr getReturnTypeImpl(const DataTypes &) const override
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{
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DataTypePtr result;
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if constexpr (IsDataTypeDecimal<DataType>)
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result = std::make_shared<DataType>(DataType::maxPrecision(), 0);
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else
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result = std::make_shared<DataType>();
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return result;
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const override
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{
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auto return_type = impl.getReturnTypeImpl(arguments);
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if (!areTypesEqual(return_type, result_type))
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throw Exception{"Dictionary attribute has different type " + return_type->getName() + " expected " + result_type->getName(),
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ErrorCodes::TYPE_MISMATCH};
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return impl.executeImpl(arguments, return_type, input_rows_count);
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}
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static bool areTypesEqual(const DataTypePtr & lhs, const DataTypePtr & rhs)
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{
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return removeNullable(recursiveRemoveLowCardinality(lhs))->equals(*removeNullable(recursiveRemoveLowCardinality(rhs)));
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}
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const FunctionDictGetNoType<dictionary_get_function_type> impl;
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};
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template<typename DataType, typename Name>
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@ -436,307 +508,6 @@ using FunctionDictGetDecimal64OrDefault = FunctionDictGetOrDefault<DataTypeDecim
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using FunctionDictGetDecimal128OrDefault = FunctionDictGetOrDefault<DataTypeDecimal<Decimal128>, NameDictGetDecimal128OrDefault>;
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using FunctionDictGetStringOrDefault = FunctionDictGetOrDefault<DataTypeString, NameDictGetStringOrDefault>;
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template<typename DataType, typename Name>
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using FunctionDictGetOrNull = FunctionDictGetImpl<DataType, Name, DictionaryGetFunctionType::getOrNull>;
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struct NameDictGetUInt8OrNull { static constexpr auto name = "dictGetUInt8OrNull"; };
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struct NameDictGetUInt16OrNull { static constexpr auto name = "dictGetUInt16OrNull"; };
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struct NameDictGetUInt32OrNull { static constexpr auto name = "dictGetUInt32OrNull"; };
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struct NameDictGetUInt64OrNull { static constexpr auto name = "dictGetUInt64OrNull"; };
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struct NameDictGetInt8OrNull { static constexpr auto name = "dictGetInt8OrNull"; };
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struct NameDictGetInt16OrNull { static constexpr auto name = "dictGetInt16OrNull"; };
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struct NameDictGetInt32OrNull { static constexpr auto name = "dictGetInt32OrNull"; };
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struct NameDictGetInt64OrNull { static constexpr auto name = "dictGetInt64OrNull"; };
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struct NameDictGetFloat32OrNull { static constexpr auto name = "dictGetFloat32OrNull"; };
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struct NameDictGetFloat64OrNull { static constexpr auto name = "dictGetFloat64OrNull"; };
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struct NameDictGetDateOrNull { static constexpr auto name = "dictGetDateOrNull"; };
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struct NameDictGetDateTimeOrNull { static constexpr auto name = "dictGetDateTimeOrNull"; };
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struct NameDictGetUUIDOrNull { static constexpr auto name = "dictGetUUIDOrNull"; };
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struct NameDictGetDecimal32OrNull { static constexpr auto name = "dictGetDecimal32OrNull"; };
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struct NameDictGetDecimal64OrNull { static constexpr auto name = "dictGetDecimal64OrNull"; };
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struct NameDictGetDecimal128OrNull { static constexpr auto name = "dictGetDecimal128OrNull"; };
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struct NameDictGetStringOrNull { static constexpr auto name = "dictGetStringOrNull"; };
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using FunctionDictGetUInt8OrNull = FunctionDictGetOrNull<DataTypeUInt8, NameDictGetUInt8OrNull>;
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using FunctionDictGetUInt16OrNull = FunctionDictGetOrNull<DataTypeUInt16, NameDictGetUInt16OrNull>;
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using FunctionDictGetUInt32OrNull = FunctionDictGetOrNull<DataTypeUInt32, NameDictGetUInt32OrNull>;
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using FunctionDictGetUInt64OrNull = FunctionDictGetOrNull<DataTypeUInt64, NameDictGetUInt64OrNull>;
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using FunctionDictGetInt8OrNull = FunctionDictGetOrNull<DataTypeInt8, NameDictGetInt8OrNull>;
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using FunctionDictGetInt16OrNull = FunctionDictGetOrNull<DataTypeInt16, NameDictGetInt16OrNull>;
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using FunctionDictGetInt32OrNull = FunctionDictGetOrNull<DataTypeInt32, NameDictGetInt32OrNull>;
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using FunctionDictGetInt64OrNull = FunctionDictGetOrNull<DataTypeInt64, NameDictGetInt64OrNull>;
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using FunctionDictGetFloat32OrNull = FunctionDictGetOrNull<DataTypeFloat32, NameDictGetFloat32OrNull>;
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using FunctionDictGetFloat64OrNull = FunctionDictGetOrNull<DataTypeFloat64, NameDictGetFloat64OrNull>;
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using FunctionDictGetDateOrNull = FunctionDictGetOrNull<DataTypeDate, NameDictGetDateOrNull>;
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using FunctionDictGetDateTimeOrNull = FunctionDictGetOrNull<DataTypeDateTime, NameDictGetDateTimeOrNull>;
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using FunctionDictGetUUIDOrNull = FunctionDictGetOrNull<DataTypeUUID, NameDictGetUUIDOrNull>;
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using FunctionDictGetDecimal32OrNull = FunctionDictGetOrNull<DataTypeDecimal<Decimal32>, NameDictGetDecimal32OrNull>;
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using FunctionDictGetDecimal64OrNull = FunctionDictGetOrNull<DataTypeDecimal<Decimal64>, NameDictGetDecimal64OrNull>;
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using FunctionDictGetDecimal128OrNull = FunctionDictGetOrNull<DataTypeDecimal<Decimal128>, NameDictGetDecimal128OrNull>;
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using FunctionDictGetStringOrNull = FunctionDictGetOrNull<DataTypeString, NameDictGetStringOrNull>;
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/// TODO: Use new API
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/// This variant of function derives the result type automatically.
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template <DictionaryGetFunctionType dictionary_get_function_type>
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class FunctionDictGetNoType final : public IFunction
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{
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public:
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static constexpr auto name = dictionary_get_function_type == DictionaryGetFunctionType::get ? "dictGet"
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: (dictionary_get_function_type == DictionaryGetFunctionType::getOrDefault ? "dictGetOrDefault" : "dictGetOrNull");
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static FunctionPtr create(const Context & context)
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{
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return std::make_shared<FunctionDictGetNoType>(context);
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}
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explicit FunctionDictGetNoType(const Context & context_) : context(context_), helper(context_) {}
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String getName() const override { return name; }
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private:
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bool isVariadic() const override { return true; }
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size_t getNumberOfArguments() const override { return 0; }
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bool useDefaultImplementationForConstants() const final { return true; }
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ColumnNumbers getArgumentsThatAreAlwaysConstant() const final { return {0, 1}; }
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bool isDeterministic() const override { return false; }
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bool isInjective(const ColumnsWithTypeAndName & sample_columns) const override
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{
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return helper.isDictGetFunctionInjective(sample_columns);
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}
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DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override
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{
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if (arguments.size() < 3)
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throw Exception{"Wrong argument count for function " + getName(), ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH};
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String dict_name;
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if (const auto * name_col = checkAndGetColumnConst<ColumnString>(arguments[0].column.get()))
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{
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dict_name = name_col->getValue<String>();
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}
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else
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throw Exception{"Illegal type " + arguments[0].type->getName() + " of first argument of function " + getName()
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+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
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String attr_name;
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if (const auto * name_col = checkAndGetColumnConst<ColumnString>(arguments[1].column.get()))
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{
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attr_name = name_col->getValue<String>();
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}
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else
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throw Exception{"Illegal type " + arguments[1].type->getName() + " of second argument of function " + getName()
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+ ", expected a const string.", ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT};
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auto dict = helper.getDictionary(dict_name);
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const DictionaryStructure & structure = dict->getStructure();
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||||
|
||||
for (const auto& attribute : structure.attributes)
|
||||
{
|
||||
if (attribute.name != attr_name)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
WhichDataType dt = removeNullable(attribute.type);
|
||||
|
||||
if constexpr (dictionary_get_function_type == DictionaryGetFunctionType::get)
|
||||
{
|
||||
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);
|
||||
}
|
||||
}
|
||||
else if constexpr (dictionary_get_function_type == DictionaryGetFunctionType::getOrDefault)
|
||||
{
|
||||
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);
|
||||
}
|
||||
}
|
||||
else if constexpr (dictionary_get_function_type == DictionaryGetFunctionType::getOrNull)
|
||||
{
|
||||
switch (dt.idx)
|
||||
{
|
||||
case TypeIndex::String:
|
||||
impl = FunctionDictGetStringOrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::UInt8:
|
||||
impl = FunctionDictGetUInt8OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::UInt16:
|
||||
impl = FunctionDictGetUInt16OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::UInt32:
|
||||
impl = FunctionDictGetUInt32OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::UInt64:
|
||||
impl = FunctionDictGetUInt64OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Int8:
|
||||
impl = FunctionDictGetInt8OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Int16:
|
||||
impl = FunctionDictGetInt16OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Int32:
|
||||
impl = FunctionDictGetInt32OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Int64:
|
||||
impl = FunctionDictGetInt64OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Float32:
|
||||
impl = FunctionDictGetFloat32OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Float64:
|
||||
impl = FunctionDictGetFloat64OrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Date:
|
||||
impl = FunctionDictGetDateOrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::DateTime:
|
||||
impl = FunctionDictGetDateTimeOrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::UUID:
|
||||
impl = FunctionDictGetUUIDOrNull::create(context);
|
||||
break;
|
||||
case TypeIndex::Decimal32:
|
||||
impl = FunctionDictGetDecimal32OrNull::create(context, getDecimalScale(*attribute.type));
|
||||
break;
|
||||
case TypeIndex::Decimal64:
|
||||
impl = FunctionDictGetDecimal64OrNull::create(context, getDecimalScale(*attribute.type));
|
||||
break;
|
||||
case TypeIndex::Decimal128:
|
||||
impl = FunctionDictGetDecimal128OrNull::create(context, getDecimalScale(*attribute.type));
|
||||
break;
|
||||
default:
|
||||
throw Exception("Unknown dictGetOrNull type", ErrorCodes::UNKNOWN_TYPE);
|
||||
}
|
||||
}
|
||||
|
||||
return attribute.type;
|
||||
}
|
||||
|
||||
throw Exception{"No such attribute '" + attr_name + "'", ErrorCodes::BAD_ARGUMENTS};
|
||||
}
|
||||
|
||||
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const override
|
||||
{
|
||||
return impl->executeImpl(arguments, result_type, input_rows_count);
|
||||
}
|
||||
|
||||
const Context & context;
|
||||
mutable FunctionDictHelper helper;
|
||||
mutable FunctionPtr impl; // underlying function used by dictGet function without explicit type info
|
||||
};
|
||||
|
||||
/// Functions to work with hierarchies.
|
||||
|
||||
class FunctionDictGetHierarchy final : public IFunction
|
||||
|
||||
Loading…
Reference in New Issue
Block a user