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Merge pull request #46897 from ClickHouse/fix-fill-empty-block

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Fix - WITH FILL would produce abort when FillingTransform processing empty block
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Alexey Milovidov 2023-02-26 22:30:50 +03:00 committed by GitHub
commit df5c7c98e6
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3 changed files with 24 additions and 0 deletions
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3
src/Processors/Transforms/FillingTransform.cpp
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@ -269,6 +269,9 @@ void FillingTransform::transform(Chunk & chunk)
if (on_totals)
return;
if (!chunk.hasRows() && !generate_suffix)
return;
Columns old_fill_columns;
Columns old_interpolate_columns;
Columns old_other_columns;

11
tests/queries/0_stateless/25339_fill_empty_chunk.reference Normal file
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@ -0,0 +1,11 @@
1 \N
2 \N
2 \N
2 \N
3 \N
4 \N
5 \N
6 \N
7 \N
8 \N
9 \N

10
tests/queries/0_stateless/25339_fill_empty_chunk.sql Normal file
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@ -0,0 +1,10 @@
-- this SELECT produces empty chunk in FillingTransform
SELECT
2 AS x,
arrayJoin([NULL, NULL, NULL])
GROUP BY
GROUPING SETS (
(0),
([NULL, NULL, NULL]))
ORDER BY x ASC WITH FILL FROM 1 TO 10;