| Ticket Hash: | c41afac34f15781fe09cd1475601db0186b0995b | ||
| Title: | LIMIT applied globally rather than locally | ||
| Status: | Fixed | Type: | Code_Defect |
| Severity: | Severe | Priority: | Immediate |
| Subsystem: | Unknown | Resolution: | Fixed |
| Last Modified: |
2019-05-29 17:22:56 6.10 years ago |
Created: |
2019-05-29 16:04:56 6.10 years ago |
| Version Found In: | 3.28.0 | ||
| User Comments: | ||||
drh added on 2019-05-29 16:04:56:
(text/x-fossil-wiki)
In the SQL below, the "LIMIT 1" clause ends up being applied to the entire query, rather than to just the one subquery to which it is attached. <blockquote><verbatim> CREATE TABLE t1 AS VALUES(1),(2); CREATE TABLE t2 AS VALUES(3); SELECT * FROM ( SELECT * FROM (SELECT * FROM t1 LIMIT 1) UNION ALL SELECT * from t2); </verbatim></blockquote> Bisect shows the error was introduced by check-in [67bfd59d9087a987f] (about 5.3 years ago) and first appeared in SQLite version 3.8.4 (2014-03-10). This problem was reported on the mailing list by Marco Foit. | ||||