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Backport #68848 to 24.8: Fix empty tuple in array

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robot-clickhouse 2024-10-16 11:08:37 +00:00
parent d2acaba718
commit 06cc6f313c
3 changed files with 5 additions and 0 deletions
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3
src/Functions/array/arrayElement.cpp
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@ -1598,6 +1598,9 @@ ColumnPtr FunctionArrayElement::executeTuple(const ColumnsWithTypeAndName & argu
const auto & tuple_columns = col_nested->getColumns();
size_t tuple_size = tuple_columns.size();
if (tuple_size == 0)
return ColumnTuple::create(input_rows_count);
const DataTypes & tuple_types = typeid_cast<const DataTypeTuple &>(
*typeid_cast<const DataTypeArray &>(*arguments[0].type).getNestedType()).getElements();

1
tests/queries/0_stateless/03229_empty_tuple_in_array.reference Normal file
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@ -0,0 +1 @@
()

1
tests/queries/0_stateless/03229_empty_tuple_in_array.sql Normal file
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@ -0,0 +1 @@
select [()][0];