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update tuple comparison.

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This commit is contained in:
Nikolai Kochetov 2019-12-10 14:19:11 +03:00
parent 5289b67b70
commit 187cc83702
1 changed files with 10 additions and 0 deletions
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10
dbms/src/Functions/FunctionsComparison.h
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@ -960,6 +960,9 @@ private:
void executeTupleEqualityImpl(Block & block, size_t result, const ColumnsWithTypeAndName & x, const ColumnsWithTypeAndName & y,
size_t tuple_size, size_t input_rows_count)
{
if (0 == tuple_size)
throw Exception("Comparison of zero-sized tuples is not implemented.", ErrorCodes::NOT_IMPLEMENTED);
auto func_compare = ComparisonFunction::create(context);
auto func_convolution = ConvolutionFunction::create(context);
@ -979,6 +982,13 @@ private:
impl->execute(tmp_block, {i * 3, i * 3 + 1}, i * 3 + 2, input_rows_count);
}
if (tuple_size == 1)
{
/// Do not call AND for single-element tuple.
block.getByPosition(result).column = tmp_block.getByPosition(2).column;
return;
}
/// Logical convolution.
tmp_block.insert({ nullptr, std::make_shared<DataTypeUInt8>(), "" });