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Add sanity check for UNION header

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Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
This commit is contained in:
Azat Khuzhin 2022-06-06 19:32:41 +03:00
parent d98336ad83
commit f86ddebada
1 changed files with 15 additions and 0 deletions
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15
src/Interpreters/InterpreterSelectWithUnionQuery.cpp
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@ -159,7 +159,22 @@ InterpreterSelectWithUnionQuery::InterpreterSelectWithUnionQuery(
{
Blocks headers(num_children);
for (size_t query_num = 0; query_num < num_children; ++query_num)
{
headers[query_num] = nested_interpreters[query_num]->getSampleBlock();
const auto & current_required_result_column_names = required_result_column_names_for_other_selects[query_num];
if (!current_required_result_column_names.empty())
{
const auto & header_columns = headers[query_num].getNames();
if (current_required_result_column_names != header_columns)
{
throw Exception(ErrorCodes::LOGICAL_ERROR,
"Different order of columns in UNION subquery: {} and {}",
fmt::join(current_required_result_column_names, ", "),
fmt::join(header_columns, ", "));
}
}
}
result_header = getCommonHeaderForUnion(headers);
}