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More effective code + some cleanup

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This commit is contained in:
Alexander Kazakov 2020-01-19 09:22:01 +03:00
parent 3b6499cce9
commit bffd66fcba
1 changed files with 11 additions and 35 deletions
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46
dbms/src/Functions/FunctionsLogical.cpp
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@ -344,16 +344,10 @@ static void executeForTernaryLogicImpl(ColumnRawPtrs arguments, ColumnWithTypeAn
return;
}
const auto result_column = ColumnUInt8::create(input_rows_count);
MutableColumnPtr const_column_holder;
if (has_consts)
{
const_column_holder =
convertFromTernaryData(UInt8Container(input_rows_count, const_3v_value), const_3v_value == Ternary::Null);
arguments.push_back(const_column_holder.get());
}
const auto result_column = has_consts ?
ColumnUInt8::create(input_rows_count, const_3v_value) : ColumnUInt8::create(input_rows_count);
OperationApplier<Op, AssociativeGenericApplierImpl>::apply(arguments, result_column->getData());
OperationApplier<Op, AssociativeGenericApplierImpl>::apply(arguments, result_column->getData(), has_consts);
result_info.column = convertFromTernaryData(result_column->getData(), result_info.type->isNullable());
}
@ -428,32 +422,24 @@ static void basicExecuteImpl(ColumnRawPtrs arguments, ColumnWithTypeAndName & re
if (has_consts && Op::apply(const_val, 0) == 0 && Op::apply(const_val, 1) == 1)
has_consts = false;
auto col_res = ColumnUInt8::create(input_rows_count, const_val);
UInt8Container & vec_res = col_res->getData();
auto col_res = has_consts ?
ColumnUInt8::create(input_rows_count, const_val) : ColumnUInt8::create(input_rows_count);
/// FastPath detection goes in here
if (arguments.size() == (has_consts ? 1 : 2))
{
if (has_consts)
FastApplierImpl<Op>::apply(*arguments[0], *col_res, vec_res);
FastApplierImpl<Op>::apply(*arguments[0], *col_res, col_res->getData());
else
FastApplierImpl<Op>::apply(*arguments[0], *arguments[1], vec_res);
FastApplierImpl<Op>::apply(*arguments[0], *arguments[1], col_res->getData());
result_info.column = std::move(col_res);
return;
}
UInt8ColumnPtrs uint8_args;
if (has_consts)
{
/// TODO: This will FAIL (or not =) ) after correction b/c we now overwrite
/// the result column in the first pass of OperationApplier
// vec_res.assign(input_rows_count, const_val);
uint8_args.push_back(col_res.get());
}
/// Convert all columns to UInt8
Columns converted_columns;
UInt8ColumnPtrs uint8_args;
Columns converted_columns_holder;
for (const IColumn * column : arguments)
{
if (auto uint8_column = checkAndGetColumn<ColumnUInt8>(column))
@ -463,21 +449,11 @@ static void basicExecuteImpl(ColumnRawPtrs arguments, ColumnWithTypeAndName & re
auto converted_column = ColumnUInt8::create(input_rows_count);
convertColumnToUInt8(column, converted_column->getData());
uint8_args.push_back(converted_column.get());
converted_columns.emplace_back(std::move(converted_column));
converted_columns_holder.emplace_back(std::move(converted_column));
}
}
OperationApplier<Op, AssociativeApplierImpl>::apply(uint8_args, col_res->getData());
/// TODO: The following code is obsolete and is to be removed now
///
/// This is possible if there is exactly one non-constant among the arguments, and it is of type UInt8.
/// Suppose we have all constants folded into a neutral value and there is only one non-constant column.
/// Although not all logical functions have a neutral value.
/*
if (uint8_args[0] != col_res.get())
vec_res.assign(uint8_args[0]->getData());
*/
OperationApplier<Op, AssociativeApplierImpl>::apply(uint8_args, col_res->getData(), has_consts);
result_info.column = std::move(col_res);
}