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17 check-ins using file src/where.c version 0ef9638651

2024-05-04
11:31
Functions that pass through the sqlite3_value of one of their arguments must also be marked as SQLITE_RESULT_SUBTYPE, in case one of their arguments has a subtype. (check-in: 2f9fba931d user: drh tags: func-rw-subtype)
2024-05-03
19:35
The coalesce(), ifnull(), and iif() functions pass through subtype values from their arguments, and hence need to have the SQLITE_RESULT_SUBTYPE flag set. (check-in: cdd1610c44 user: drh tags: func-rw-subtype)
2024-05-02
19:22
Fix a problem with queries that use "IN(...) ORDER BY ... NULLS LAST" or similar introduced by [d7648e21605a0b38]. (check-in: 26b2d9390f user: dan tags: trunk)
18:16
Avoid an assert failure accessible only when internal testing features are enabled. dbsqlfuzz crash-66abacda6bca6bd531e25595e8c8068e2c710326.txt. (check-in: fbc446daac user: dan tags: trunk)
17:46
Fix a case where the recovery extension might write uninitialized data to the recovered database. (check-in: 8519b4d039 user: dan tags: trunk)
14:48
Avoid an OP_Next in cases where an IN(...) query against a UNIQUE index may return at most 1 row. (check-in: d7648e2160 user: dan tags: trunk)
12:14
Fix the CREATE TABLE performance issue described by forum thread 4cf69794d9dfff7c in two different ways: (1) Omit the call to PRAGMA integrity_check('X') that was being done after CREATE TABLE "X" because the result was being ignored and the integrity_check was not doing anything other than burning CPU cycles. (2) Do not interpret the argument to PRAGMA integrity_check as a number if it is in fact a string that looks like a number. (check-in: 71f08b9122 user: drh tags: trunk)
12:00
Add a test case to the fix to PRAGMA integrity_check in the previous check-in. (Closed-Leaf check-in: 39a57b596d user: drh tags: faster-create)
11:52
Do not accept a string that looks like a number used as an argument to PRAGMA integrity_check as a number. Treat it as a table name that just happens to look like a number. (check-in: b04e7a2347 user: drh tags: faster-create)
11:51
Omit the OP_SqlExec to "PRAGMA integrity_check" added by [348fa7aaf7958b3f] because it is a no-op. Even if the integrity_check failes, the CREATE TABLE is stull successful. The OP_SqlExec just burns CPU cycles for no reason. (check-in: 532795acd1 user: drh tags: faster-create)
2024-05-01
19:48
Avoid an OP_Next in cases where an IN(...) query against a UNIQUE index may return at most 1 row. (Closed-Leaf check-in: 560f64157d user: dan tags: unique-in-opt)
16:25
Fix another problem in the recovery extension where a corrupt sqlite_schema table could lead to excessive memory consumption. (check-in: 1c7e33a8aa user: dan tags: trunk)
14:42
Fix a problem causing the recovery extension to use excessive memory and CPU time in some cases. (check-in: 8de85170d5 user: dan tags: trunk)
2024-04-30
19:34
Avoid 32-bit overflow when calculating ncycle for ".scanstats vm". (check-in: 2858efa06d user: dan tags: trunk)
2024-04-26
19:10
Fix issues in LIMIT/OFFSET support for virtual tables. The first problem was reported by forum post c243b8f856. That report prompted an enhancement to the generate_series() (also included in this merge) which in turn identified other similar issues. (check-in: 5f6c079d84 user: drh tags: trunk)
18:13
Allow virtual table implementations to handle OFFSET but not LIMIT, but not LIMIT but not OFFSET. (Closed-Leaf check-in: 90e5c8226a user: dan tags: vtab-limit-fix)
17:19
Have where.c ignore any plan from a virtual table that tries to use LIMIT/OFFSET without also using all WHERE constraints. (check-in: 7d30596496 user: dan tags: vtab-limit-fix)