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Fix a problem that comes up when using generated columns that evaluate to a

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constant in an index and then making use of that index in a join.

FossilOrigin-Name: 8b12e95fec7ce6e0de82a04ca3dfcf1a8e62e233b7382aa28a8a9be6e862b1af
This commit is contained in:
drh
2019-11-21 18:28:44 +00:00
parent 9c9c70920b
commit 57f7ece784
5 changed files with 30 additions and 11 deletions
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12
test/gencol1.test
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@ -243,5 +243,17 @@ do_catchsql_test gencol1-8.20 {
UPDATE t0 SET c0 = NULL;
} {1 {generated column loop on "c2"}}
# 2019-11-21 Problems in the new generated column logic
# reported by Yongheng Chen and Rui Zhong
do_execsql_test gencol1-9.10 {
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
CREATE TABLE t1(aa , bb AS (17) UNIQUE);
INSERT INTO t1 VALUES(17);
CREATE TABLE t2(cc);
INSERT INTO t2 VALUES(41);
SELECT * FROM t2 JOIN t1 WHERE t1.bb=t1.aa AND t1.bb=17;
} {41 17 17}
finish_test