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Fix the constant propagation optimization so that it does not try to

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propagate constant expressions that have affinity.  Ticket [82ac75ba0093e5dc]

FossilOrigin-Name: 6db1c3498f6bfa01bb460e62b802b63ec4bf43577a17a94e1e2fa0ecc1e64960
This commit is contained in:
drh
2020-01-08 01:43:47 +00:00
parent 97bffe674f
commit c9301e6e7c
4 changed files with 33 additions and 8 deletions
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23
test/whereL.test
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@ -122,4 +122,27 @@ do_execsql_test 400 {
SELECT x.a FROM x JOIN y ON x.c = y.a WHERE x.b = 1 AND x.b = 1;
} {}
# 2020-01-07: ticket 82ac75ba0093e5dc
# Incorrect join result due to mishandling of affinity in constant
# propagation.
#
reset_db
do_execsql_test 500 {
PRAGMA automatic_index=OFF;
CREATE TABLE t0(c0);
INSERT INTO t0 VALUES('0');
CREATE VIEW v0(c0) AS SELECT CAST(0 AS INT) FROM t0;
SELECT 200, * FROM t0, v0 WHERE 0 = t0.c0 AND t0.c0 = v0.c0;
} {}
do_execsql_test 510 {
SELECT 200, * FROM t0, v0 WHERE t0.c0 = 0 AND t0.c0 = v0.c0;
} {}
do_execsql_test 520 {
SELECT 200, * FROM t0, v0 WHERE 0 = t0.c0 AND v0.c0 = t0.c0;
} {}
do_execsql_test 530 {
SELECT 200, * FROM t0, v0 WHERE t0.c0 = 0 AND v0.c0 = t0.c0;
} {}
finish_test