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dbms: implement concat for arbitrary arity (> 0). [#METR-12888]
This commit is contained in:
Andrey Mironov
parent
31af725ba1
commit
fe49e06e46
@ -12,6 +12,7 @@
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#include <DB/Columns/ColumnFixedString.h>
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#include <DB/Columns/ColumnConst.h>
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#include <DB/Functions/IFunction.h>
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#include <statdaemons/ext/range.hpp>
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namespace DB
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@ -968,24 +969,94 @@ public:
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/// Получить тип результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
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DataTypePtr getReturnType(const DataTypes & arguments) const
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{
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if (arguments.size() != 2)
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if (arguments.size() < 2)
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throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
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+ toString(arguments.size()) + ", should be 2.",
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+ toString(arguments.size()) + ", should be at least 1.",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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if (!typeid_cast<const DataTypeString *>(&*arguments[0]) && !typeid_cast<const DataTypeFixedString *>(&*arguments[0]))
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throw Exception("Illegal type " + arguments[0]->getName() + " of first argument of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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if (!typeid_cast<const DataTypeString *>(&*arguments[1]) && !typeid_cast<const DataTypeFixedString *>(&*arguments[1]))
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throw Exception("Illegal type " + arguments[1]->getName() + " of second argument of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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for (const auto arg_idx : ext::range(0, arguments.size()))
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{
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const auto arg = arguments[arg_idx].get();
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if (!typeid_cast<const DataTypeString *>(arg) &&
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!typeid_cast<const DataTypeFixedString *>(arg))
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throw Exception{
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"Illegal type " + arg->getName() + " of argument " + std::to_string(arg_idx + 1) + " of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT
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};
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}
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return new DataTypeString;
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}
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enum class instr_type : uint8_t
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{
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copy_string,
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copy_fixed_string,
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copy_const_string
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};
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/// column pointer augmented with offset (current offset String/FixedString, unused for Const<String>)
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using column_uint_pair_t = std::pair<const IColumn *, IColumn::Offset_t>;
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/// instr_type is being stored to allow using static_cast safely
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using instr_t = std::pair<instr_type, column_uint_pair_t>;
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using instrs_t = std::vector<instr_t>;
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/** calculate total length of resulting strings (without terminating nulls), determine whether all input
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* strings are constant, assemble instructions */
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instrs_t getInstructions(const Block & block, const ColumnNumbers & arguments, size_t & out_length, bool & out_const)
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{
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instrs_t result{};
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result.reserve(arguments.size());
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out_length = 0;
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out_const = true;
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for (const auto arg_pos : arguments)
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{
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const auto column = block.getByPosition(arg_pos).column.get();
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if (const auto col = typeid_cast<const ColumnString *>(column))
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{
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/** ColumnString stores strings with terminating null character
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* which should not be copied, therefore the decrease of total size by
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* the number of terminating nulls */
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out_length += col->getChars().size() - col->getOffsets().size();
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out_const = false;
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result.emplace_back(instr_type::copy_string, column_uint_pair_t{col, 0});
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}
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else if (const auto col = typeid_cast<const ColumnFixedString *>(column))
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{
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out_length += col->getChars().size();
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out_const = false;
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result.emplace_back(instr_type::copy_fixed_string, column_uint_pair_t{col, 0});
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}
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else if (const auto col = typeid_cast<const ColumnConstString *>(column))
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{
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out_length += col->getData().size();
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out_const = out_const && true;
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result.emplace_back(instr_type::copy_const_string, column_uint_pair_t{col, 0});
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}
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else
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throw Exception("Illegal column " + column->getName() + " of argument of function " + getName(),
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ErrorCodes::ILLEGAL_COLUMN);
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}
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return result;
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}
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/// Выполнить функцию над блоком.
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void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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void execute(Block & block, const ColumnNumbers & arguments, const size_t result)
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{
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if (arguments.size() == 2)
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executeBinary(block, arguments, result);
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else
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executeNAry(block, arguments, result);
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}
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void executeBinary(Block & block, const ColumnNumbers & arguments, const size_t result)
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{
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const IColumn * c0 = &*block.getByPosition(arguments[0]).column;
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const IColumn * c1 = &*block.getByPosition(arguments[1]).column;
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@ -1059,6 +1130,81 @@ public:
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ErrorCodes::ILLEGAL_COLUMN);
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}
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}
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void executeNAry(Block & block, const ColumnNumbers & arguments, const size_t result)
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{
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const auto size = block.rowsInFirstColumn();
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std::size_t result_length{};
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bool result_is_const{};
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auto instrs = getInstructions(block, arguments, result_length, result_is_const);
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if (result_is_const)
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{
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const auto out = new ColumnConst<String>{size, ""};
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block.getByPosition(result).column = out;
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auto & data = out->getData();
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data.reserve(result_length);
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for (const auto & instr : instrs)
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data += static_cast<const ColumnConst<String> *>(instr.second.first)->getData();
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}
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else
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{
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const auto out = new ColumnString{};
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block.getByPosition(result).column = out;
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auto & out_data = out->getChars();
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out_data.resize(result_length + size);
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auto & out_offsets = out->getOffsets();
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out_offsets.resize(size);
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std::size_t out_offset{};
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for (const auto row : ext::range(0, size))
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{
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for (auto & instr : instrs)
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{
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if (instr_type::copy_string == instr.first)
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{
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auto & in_offset = instr.second.second;
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const auto col = static_cast<const ColumnString *>(instr.second.first);
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const auto offset = col->getOffsets()[row];
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const auto length = offset - in_offset - 1;
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memcpy(&out_data[out_offset], &col->getChars()[in_offset], length);
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out_offset += length;
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in_offset = offset;
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}
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else if (instr_type::copy_fixed_string == instr.first)
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{
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auto & in_offset = instr.second.second;
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const auto col = static_cast<const ColumnFixedString *>(instr.second.first);
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const auto length = col->getN();
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memcpy(&out_data[out_offset], &col->getChars()[in_offset], length);
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out_offset += length;
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in_offset += length;
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}
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else if (instr_type::copy_const_string == instr.first)
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{
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const auto col = static_cast<const ColumnConst<String> *>(instr.second.first);
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const auto & data = col->getData();
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const auto length = data.size();
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memcpy(&out_data[out_offset], data.data(), length);
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out_offset += length;
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}
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else
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throw std::logic_error{"unknown instr_type"};
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}
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out_data[out_offset] = '\0';
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out_offsets[row] = ++out_offset;
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}
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}
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}
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};
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185
dbms/tests/queries/0_stateless/00078_string_concat.sql
Normal file
185
dbms/tests/queries/0_stateless/00078_string_concat.sql
Normal file
@ -0,0 +1,185 @@
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select '{ key: fn, value: concat }' == concat('{ key: ', toFixedString('fn', 2), ', value: ', 'concat', ' }');
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select concat('a', 'b') == 'ab';
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select concat('a', materialize('b')) == 'ab';
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select concat(materialize('a'), 'b') == 'ab';
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select concat(materialize('a'), materialize('b')) == 'ab';
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select concat('a', toFixedString('b', 1)) == 'ab';
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select concat('a', materialize(toFixedString('b', 1))) == 'ab';
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select concat(materialize('a'), toFixedString('b', 1)) == 'ab';
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select concat(materialize('a'), materialize(toFixedString('b', 1))) == 'ab';
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select concat(toFixedString('a', 1), 'b') == 'ab';
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select concat(toFixedString('a', 1), materialize('b')) == 'ab';
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select concat(materialize(toFixedString('a', 1)), 'b') == 'ab';
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select concat(materialize(toFixedString('a', 1)), materialize('b')) == 'ab';
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select concat(toFixedString('a', 1), toFixedString('b', 1)) == 'ab';
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select concat(toFixedString('a', 1), materialize(toFixedString('b', 1))) == 'ab';
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select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1)) == 'ab';
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select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1))) == 'ab';
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select concat('a', 'b') == 'ab' from system.numbers limit 5;
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select concat('a', materialize('b')) == 'ab' from system.numbers limit 5;
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select concat(materialize('a'), 'b') == 'ab' from system.numbers limit 5;
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select concat(materialize('a'), materialize('b')) == 'ab' from system.numbers limit 5;
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select concat('a', toFixedString('b', 1)) == 'ab' from system.numbers limit 5;
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select concat('a', materialize(toFixedString('b', 1))) == 'ab' from system.numbers limit 5;
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select concat(materialize('a'), toFixedString('b', 1)) == 'ab' from system.numbers limit 5;
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select concat(materialize('a'), materialize(toFixedString('b', 1))) == 'ab' from system.numbers limit 5;
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select concat(toFixedString('a', 1), 'b') == 'ab' from system.numbers limit 5;
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select concat(toFixedString('a', 1), materialize('b')) == 'ab' from system.numbers limit 5;
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select concat(materialize(toFixedString('a', 1)), 'b') == 'ab' from system.numbers limit 5;
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select concat(materialize(toFixedString('a', 1)), materialize('b')) == 'ab' from system.numbers limit 5;
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select concat(toFixedString('a', 1), toFixedString('b', 1)) == 'ab' from system.numbers limit 5;
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select concat(toFixedString('a', 1), materialize(toFixedString('b', 1))) == 'ab' from system.numbers limit 5;
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select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1)) == 'ab' from system.numbers limit 5;
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select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1))) == 'ab' from system.numbers limit 5;
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select concat('a', 'b', 'c') == 'abc';
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select concat('a', 'b', materialize('c')) == 'abc';
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select concat('a', materialize('b'), 'c') == 'abc';
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select concat('a', materialize('b'), materialize('c')) == 'abc';
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select concat(materialize('a'), 'b', 'c') == 'abc';
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select concat(materialize('a'), 'b', materialize('c')) == 'abc';
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select concat(materialize('a'), materialize('b'), 'c') == 'abc';
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select concat(materialize('a'), materialize('b'), materialize('c')) == 'abc';
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select concat('a', 'b', toFixedString('c', 1)) == 'abc';
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select concat('a', 'b', materialize(toFixedString('c', 1))) == 'abc';
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select concat('a', materialize('b'), toFixedString('c', 1)) == 'abc';
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select concat('a', materialize('b'), materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize('a'), 'b', toFixedString('c', 1)) == 'abc';
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select concat(materialize('a'), 'b', materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize('a'), materialize('b'), toFixedString('c', 1)) == 'abc';
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select concat(materialize('a'), materialize('b'), materialize(toFixedString('c', 1))) == 'abc';
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select concat('a', toFixedString('b', 1), 'c') == 'abc';
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select concat('a', toFixedString('b', 1), materialize('c')) == 'abc';
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select concat('a', materialize(toFixedString('b', 1)), 'c') == 'abc';
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select concat('a', materialize(toFixedString('b', 1)), materialize('c')) == 'abc';
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select concat(materialize('a'), toFixedString('b', 1), 'c') == 'abc';
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select concat(materialize('a'), toFixedString('b', 1), materialize('c')) == 'abc';
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select concat(materialize('a'), materialize(toFixedString('b', 1)), 'c') == 'abc';
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select concat(materialize('a'), materialize(toFixedString('b', 1)), materialize('c')) == 'abc';
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select concat('a', toFixedString('b', 1), toFixedString('c', 1)) == 'abc';
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select concat('a', toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc';
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select concat('a', materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc';
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select concat('a', materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize('a'), toFixedString('b', 1), toFixedString('c', 1)) == 'abc';
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select concat(materialize('a'), toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize('a'), materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc';
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select concat(materialize('a'), materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc';
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select concat(toFixedString('a', 1), 'b', 'c') == 'abc';
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select concat(toFixedString('a', 1), 'b', materialize('c')) == 'abc';
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select concat(toFixedString('a', 1), materialize('b'), 'c') == 'abc';
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select concat(toFixedString('a', 1), materialize('b'), materialize('c')) == 'abc';
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select concat(materialize(toFixedString('a', 1)), 'b', 'c') == 'abc';
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select concat(materialize(toFixedString('a', 1)), 'b', materialize('c')) == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize('b'), 'c') == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize('b'), materialize('c')) == 'abc';
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select concat(toFixedString('a', 1), 'b', toFixedString('c', 1)) == 'abc';
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select concat(toFixedString('a', 1), 'b', materialize(toFixedString('c', 1))) == 'abc';
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select concat(toFixedString('a', 1), materialize('b'), toFixedString('c', 1)) == 'abc';
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select concat(toFixedString('a', 1), materialize('b'), materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize(toFixedString('a', 1)), 'b', toFixedString('c', 1)) == 'abc';
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select concat(materialize(toFixedString('a', 1)), 'b', materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize('b'), toFixedString('c', 1)) == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize('b'), materialize(toFixedString('c', 1))) == 'abc';
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select concat(toFixedString('a', 1), toFixedString('b', 1), 'c') == 'abc';
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select concat(toFixedString('a', 1), toFixedString('b', 1), materialize('c')) == 'abc';
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select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), 'c') == 'abc';
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select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), materialize('c')) == 'abc';
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select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), 'c') == 'abc';
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select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), materialize('c')) == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), 'c') == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), materialize('c')) == 'abc';
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select concat(toFixedString('a', 1), toFixedString('b', 1), toFixedString('c', 1)) == 'abc';
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select concat(toFixedString('a', 1), toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc';
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select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc';
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select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), toFixedString('c', 1)) == 'abc';
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select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc';
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select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc';
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select concat('a', 'b', 'c') == 'abc' from system.numbers limit 5;
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select concat('a', 'b', materialize('c')) == 'abc' from system.numbers limit 5;
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select concat('a', materialize('b'), 'c') == 'abc' from system.numbers limit 5;
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select concat('a', materialize('b'), materialize('c')) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), 'b', 'c') == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), 'b', materialize('c')) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), materialize('b'), 'c') == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), materialize('b'), materialize('c')) == 'abc' from system.numbers limit 5;
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select concat('a', 'b', toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
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select concat('a', 'b', materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
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select concat('a', materialize('b'), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
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select concat('a', materialize('b'), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), 'b', toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), 'b', materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), materialize('b'), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), materialize('b'), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
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select concat('a', toFixedString('b', 1), 'c') == 'abc' from system.numbers limit 5;
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select concat('a', toFixedString('b', 1), materialize('c')) == 'abc' from system.numbers limit 5;
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select concat('a', materialize(toFixedString('b', 1)), 'c') == 'abc' from system.numbers limit 5;
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select concat('a', materialize(toFixedString('b', 1)), materialize('c')) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), toFixedString('b', 1), 'c') == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), toFixedString('b', 1), materialize('c')) == 'abc' from system.numbers limit 5;
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select concat(materialize('a'), materialize(toFixedString('b', 1)), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize('a'), materialize(toFixedString('b', 1)), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
|
||||
select concat('a', toFixedString('b', 1), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat('a', toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat('a', materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat('a', materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize('a'), toFixedString('b', 1), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize('a'), toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize('a'), materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize('a'), materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
|
||||
select concat(toFixedString('a', 1), 'b', 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), 'b', materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize('b'), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize('b'), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), 'b', 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), 'b', materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize('b'), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize('b'), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
|
||||
select concat(toFixedString('a', 1), 'b', toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), 'b', materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize('b'), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize('b'), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), 'b', toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), 'b', materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize('b'), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize('b'), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
|
||||
select concat(toFixedString('a', 1), toFixedString('b', 1), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), toFixedString('b', 1), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), 'c') == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), materialize('c')) == 'abc' from system.numbers limit 5;
|
||||
|
||||
select concat(toFixedString('a', 1), toFixedString('b', 1), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(toFixedString('a', 1), materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), toFixedString('b', 1), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), toFixedString('c', 1)) == 'abc' from system.numbers limit 5;
|
||||
select concat(materialize(toFixedString('a', 1)), materialize(toFixedString('b', 1)), materialize(toFixedString('c', 1))) == 'abc' from system.numbers limit 5;
|
||||
Loading…
Reference in New Issue
Block a user