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Fix a problem in the query flattener associated with RIGHT JOIN, as

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reported by [bugs:/info/2026-10-11T16:49:00Z|Bug 2026-10-11T16:49:00Z].
This problem surfaced after the fix to
[forum:/info/2025-08-21T14:14:03Z|Forum post 2025-08-21T14:14:03Z]
at check-in [e0beda7ffe92abf6].  Before that, the query would not parse.

FossilOrigin-Name: e6e27e37eb8c3159d67529959694971f35a589da75648e207c44e317e6d160be
This commit is contained in:
drh
2026-10-11 17:44:08 +00:00
parent d85a80711c
commit 513c19fa38
4 changed files with 25 additions and 11 deletions
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15
test/joinI.test
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@@ -1,4 +1,4 @@
# 2022 May 17
# 2025-08-22
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
@@ -286,4 +286,17 @@ do_execsql_test 9.4 {
WHERE t1.b IS NULL;
}
# Bug 2026-10-11T16:49:00Z
db null NULL
do_execsql_test 10.0 {
DROP TABLE t1;
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES(1);
SELECT x.a AS xa, y.a AS yz, z.a AS za, va
FROM t1 AS x JOIN t1 AS y ON x.a+y.a=0
RIGHT JOIN t1 AS z ON z.a+y.a=0
CROSS JOIN (SELECT 2 AS va FROM t1 UNION ALL SELECT 3 FROM t1)
ORDER BY +va;
} {NULL NULL 1 2 NULL NULL 1 3}
finish_test