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Do not move WHERE clause terms inside OR expressions that are contained

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within an ON clause of a LEFT JOIN.  Fix for ticket [f2369304e47167e3e].

FossilOrigin-Name: 1128575d0ab24f7023a0f6e6ce4828b9a09a7c6c
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drh
2013-05-09 14:20:11 +00:00
parent 0bf3bc6c64
commit b3129fa560
4 changed files with 35 additions and 10 deletions
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test/where9.test
+21
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@@ -893,4 +893,25 @@ do_test where9-8.3 {
}
} {2 3 4 5 {} {} 5 55 3 4 5 6 2 4 5 55}
# Fix for ticket [f2369304e47167e3e644e2f1fe9736063391d7b7]
# Incorrect results when OR is used in the ON clause of a LEFT JOIN
#
do_test where9-9.1 {
db eval {
CREATE TABLE t91(x); INSERT INTO t91 VALUES(1);
CREATE TABLE t92(y INTEGER PRIMARY KEY,a,b);
INSERT INTO t92 VALUES(1,2,3);
SELECT 1 FROM t91 LEFT JOIN t92 ON a=2 OR b=3;
SELECT 2 FROM t91 LEFT JOIN t92 ON a=2 AND b=3;
SELECT 3 FROM t91 LEFT JOIN t92 ON (a=2 OR b=3) AND y IS NULL;
SELECT 4 FROM t91 LEFT JOIN t92 ON (a=2 AND b=3) AND y IS NULL;
CREATE TEMP TABLE x9 AS SELECT * FROM t91 LEFT JOIN t92 ON a=2 OR b=3;
SELECT 5 FROM x9 WHERE y IS NULL;
SELECT 6 FROM t91 LEFT JOIN t92 ON a=2 OR b=3 WHERE y IS NULL;
SELECT 7 FROM t91 LEFT JOIN t92 ON a=2 AND b=3 WHERE y IS NULL;
SELECT 8 FROM t91 LEFT JOIN t92 ON a=22 OR b=33 WHERE y IS NULL;
SELECT 9 FROM t91 LEFT JOIN t92 ON a=22 AND b=33 WHERE y IS NULL;
}
} {1 2 3 4 8 9}
finish_test