Make sure to handle COUNT and SUM with DISTINCT columns with empty input #5097
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Signed-off-by: Andres Taylor <antaylor@squareup.com>
Signed-off-by: Andres Taylor <antaylor@squareup.com>
Signed-off-by: Andres Taylor <antaylor@squareup.com>
Signed-off-by: Andres Taylor <antaylor@squareup.com>
sougou
approved these changes
Aug 17, 2019
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Love the assert.
This does look like it will address all corner cases of #5036. @mpawliszyn: can you verify?
mpawliszyn
reviewed
Aug 21, 2019
| func createEmptyValueFor(opcode AggregateOpcode) (sqltypes.Value, error) { | ||
| switch opcode { | ||
| case AggregateCountDistinct: | ||
| return sqltypes.NULL, nil |
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