Unexpected Result by WHERE Again
(1) By Jinsheng Ba (bajinsheng) on 2022-06-02 13:46:59 [link] [source]
See this inconsistent results. ('1')IS(v0.c1) IS FALSE is evaluated true at the third SELECT, but the second SELECT does not return any row.
CREATE TABLE t0 (c0); CREATE VIEW v0(c0, c1) AS SELECT CUME_DIST() OVER (PARTITION BY t0.c0), TRUE FROM t0; INSERT INTO t0 VALUES ('x'); SELECT ALL * FROM v0, t0; -- 1.0|1|x SELECT * FROM v0, t0 WHERE ('1')IS(v0.c1) IS FALSE; -- Null SELECT ('1')IS(v0.c1) IS FALSE FROM v0, t0; -- 1
Commit ID: 8eb9a7dd
OS: Ubuntu 20.04
Configuration Options: ./configure --enable-all
(2) By Richard Hipp (drh) on 2022-06-02 21:08:43 in reply to 1 [source]
Thanks for the bug report.
This problem goes back to version 3.35.0. A fix has been checked in on trunk. Even though this is a bug in a released version, the bug is highly obscure, and it is not a security threat, so we do not plan to do a patch release for it. The change will be in the next regular release (3.39.0) which should be out before too much longer.
(3) By Jinsheng Ba (bajinsheng) on 2022-06-03 09:10:19 in reply to 2 [link] [source]