database/mariadb-columnstore-engine
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fix(group by, having): MCOL-5776: GROUP BY/HAVING closer to server's (#3371)

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This patch introduces an internal aggregate operator SELECT_SOME that
is automatically added to columns that are not in GROUP BY. It
"computes" some plausible value of the column (actually, last one
passed).

Along the way it fixes incorrect handling of HAVING being transferred
into WHERE, window function handling and a bit of other inconsistencies.
This commit is contained in:
Sergey Zefirov
2024-12-20 22:11:47 +03:00
committed by GitHub
parent 073f0b7f41
commit 60dc7550f1
20 changed files with 601 additions and 131 deletions
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mysql-test/columnstore/basic/t/mcs76_having.test
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@ -21,6 +21,7 @@ SELECT col1, col2 FROM t1 GROUP BY col1, col2 HAVING col1 > 1 OR col2 LIKE '%o%'
--sorted_result
SELECT col1, col2, SUM(LENGTH(col2)) FROM t1 GROUP BY col1 HAVING col1 > 1 AND col2 LIKE '%o%' ORDER BY col1;
SELECT 'some output';
CREATE TABLE t2(col1 INT, col2 DATETIME)ENGINE=Columnstore;
INSERT INTO t2 VALUES(1, '2020-2-2'),(2, '2020-3-3'),(5,'2020-6-6'),(6, '2020-7-7');
SELECT t1.col1, SUM(t1.col1*t2.col1) AS a FROM t1 JOIN t2 ON t1.col1 = t2.col1 GROUP BY t1.col1 HAVING a>1 ORDER BY t1.col1;