|13:50||• Fixed ticket [47b2581a]: Infinite loop on UPDATE plus 5 other changes (artifact: ceefd4de user: drh)|
|13:37||Fix a problem causing an infinite loop or other malfunction in some UPDATE statements with an OR term in the WHERE clause. Ticket [47b2581aa9bfecec] (check-in: feb2c2b6 user: dan tags: trunk)|
|12:54||• New ticket [47b2581a] Infinite loop on UPDATE. (artifact: 0e79b53b user: drh)|
|Title:||Infinite loop on UPDATE|
|Last Modified:||2018-01-16 13:50:15|
|Version Found In:||3.21.0|
drh added on 2018-01-16 12:54:28:
The UPDATE at the end of the following sequence of SQL statements enters an infinite loop.
CREATE TABLE t1(a,b); CREATE INDEX t1b ON t1(a); CREATE INDEX t1c ON t1(b); INSERT INTO t1 VALUES(1,2); UPDATE t1 SET a = a+2 WHERE a>0 OR b>0;
Bisecting shows that this problem was introduced by the single-pass update optimization of check-in [7ae6104a3e0d1d2] on 2017-01-11 and first released with version 3.17.0. The problem was discovered by Harald Klimach and reported on the SQLite mailing list.