a12e92d2f7
Remove an ALWAYS() added by [960a8e6fc91f4] that turns out to be false
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in some cases of malformed SQL.
FossilOrigin-Name: cc8171461bf35f584888a24b844c8b79ad30155b19b61161e9f3abc276e8aae5
2025-07-04 11:48:11 +00:00
0e6e05d4d5
Make the value of an explicit LIMIT clause on a scalar sub-query available to xBestIndex for simple "LIMIT 0" and "LIMIT 1" queries.
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FossilOrigin-Name: 33b6a63caafccc61b3193714911cd8b5dd9b7f1798054b8c7845b23688d531f2
2025-07-03 15:32:27 +00:00
c525e6e817
Make handling of LIMIT clauses in correlated sub-queries on virtual tables more efficient.
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FossilOrigin-Name: 7214cb2a5b35190a06a1040cd4c54f325d347f8d8e36a07fd76c0a421e266522
2025-07-03 14:28:47 +00:00
bfb4993364
Fix an uninitialized variable added yesterday by [d27d34fb746280e7].
...
This problem was discovered overnight by
[https://github.com/google/oss-fuzz |OSSFuzz].
FossilOrigin-Name: 6db4703f1178fc808f3a75c355fb6638fb12c88f6e1ce7f579e200ced8089114
2025-07-03 11:52:17 +00:00
6245e5a46b
Improve the bytecode for joins such that it exits earlier if it determines
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that no output is possible.
FossilOrigin-Name: 2d2b61cba44a756a3a41ef5c95bbb0c0b7111f4b679c578fec9bd0b214cca367
2025-07-02 11:47:54 +00:00
caf0473652
Ensure that Expr.op2 values for TK_AGG_FUNCTION nodes are adjusted when
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query flattening.
FossilOrigin-Name: d27d34fb746280e7e81335db4e195914b15403ef0da7b2955550553dd78fbe9a
2025-07-02 02:03:43 +00:00
2427ce16d9
Improved comments on bytecode used to implement aggregate queries, to aid
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in debugging.
FossilOrigin-Name: a1a8b85cdba64a17dcdcd4e6b42b872957cec2dc05b0ac34dfcd82f59344034b
2025-07-01 23:17:36 +00:00
46bfcc1a21
Improved byte-code comments for the short-circuit optimization of
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[0083d5169a46104a], to aid in debugging.
FossilOrigin-Name: 113f9d10e347eeaa893ff8b47a461009e0b12589374b93cf3e0bddd19c702dea
2025-07-01 20:32:45 +00:00
5e71497404
Cache and reuse virtual table cursors in the bytecode engine.
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FossilOrigin-Name: 2d187d4232d750cb1840f1d89c8aed65962cb0883c1d7f91c554b451e475c514
2025-07-01 17:36:55 +00:00
e1910ed1d2
Merge trunk fixes into the empty-table-optimizations branch.
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FossilOrigin-Name: 63306e447efb3ac17e789a331ed3bb65459eb8b79d66e9c185ba3bd852f34ce3
2025-07-01 15:13:37 +00:00
d82c6a2cf7
When attempting to optimize "expr AND false" to "false" and
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"expr IN ()" to "false", take care not to delete aggregate functions
in the "expr" as doing so can change the meaning of the query.
See [forum:/forumpost/f4878de3e7dd4764|forum thread f4878de3e7].
FossilOrigin-Name: 77397bd67d918db57d5ac545d6d963194806fdabcdaa8f822b6b09e4cfe8b715
2025-07-01 12:43:13 +00:00
3d21dcc924
More aggressive optimization of addrHalt for RIGHT JOIN.
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FossilOrigin-Name: 5e51d1c0dfcafef9e71c99de3f626dee157c935724b84c6e0c630299a880446f
2025-06-30 21:07:08 +00:00
ba56f7020d
Compute WhereLevel.addrBrk and .addrHalt early so that those labels can be
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used to abort loops early. Use this to improve performance on two more
of the cases described by [forum:/forumpost/52651713ac|forum post 52651713ac].
FossilOrigin-Name: 6fc0b9ac23be6840542982de4bb282ebca1db8b5ab3baefdde95a997c1506e81
2025-06-30 20:19:19 +00:00
99f1aa03fb
Strive to skip the evaluation of scalar subqueries that are part of a
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larger expression if the result from the scalar subquery does not change the
result of the overall expression.
FossilOrigin-Name: 0083d5169a46104a25355bdd9d5a2f4027b049191ebda571dd228477ec217296
2025-06-30 16:41:40 +00:00
280559b446
For all binary operators, try to avoid computing subquery operands if the
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other operand is NULL.
FossilOrigin-Name: d86eb16283c4b573c506d4faa422d5d9aeb6abc279d8e6a8e2104737162d417f
2025-06-30 12:14:47 +00:00
e2e81e6983
Slightly smaller and faster version of the previous check-in.
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FossilOrigin-Name: f6e6fd02f4ad49c390a2d3c9626d57f9b2fff1f67eb361b30074cc1f5121810e
2025-06-30 11:04:55 +00:00
b8c81790b2
Minor API doc typo fixes from brickviking.
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FossilOrigin-Name: b48d95191662e09659b5b55ae65cd462c9e1700c4f92dd9d40b59548f0797c02
2025-06-30 11:00:59 +00:00
e24f20a4f5
Factor out the code that tries to avoid evaluating subquery operands if the
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other operand is NULL into a subroutine, so that it can be more easily reused
by other parts of the code generator.
FossilOrigin-Name: 3c6c71bcea16443b82234414137dfa1b59e2ee8fe5097906c738fc1228fec4e6
2025-06-30 10:30:47 +00:00
f0991c416b
Minor API doc typo fixes from brickviking.
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FossilOrigin-Name: c7cf9dcb69ce558ba6b81b2787f92ed7383e37f08b199faeb14f7adb4e494532
2025-06-29 07:32:20 +00:00
311d73efc2
Improve the bytecode generated for comparisons so that if one operand is
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a subquery and the other operand evaluates to NULL, the subquery operand
is not even computed. This fixes 5 of the 12 slow queries described
in [forum:/forumpost/52651713ac|forum post 52651713ac].
FossilOrigin-Name: f147bc04776ac0056412f69dfc518016c0d5b4e9d964664e3d88f595fb29dbe0
2025-06-28 17:59:15 +00:00
c52e9d97d4
Raise an error right away if the number of aggregate terms in a query
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exceeds the maximum number of columns.
FossilOrigin-Name: 5508b56fd24016c13981ec280ecdd833007c9d8dd595edb295b984c2b487b5c8
2025-06-27 19:02:21 +00:00
fbf1c0526e
API doc typo fixes and closing DD element tags from brickviking.
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FossilOrigin-Name: c9ddd15b0197e6e5c5a74581d94cf986523514ffdb28c66ba18de9a22aec97e9
2025-06-27 12:46:50 +00:00
e77e589a35
Work around an apparent GCC UBSAN bug. See
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[forum:/forumpost/1d7c25d4a2d6f5e2|forum thread 1d7c25d4a2d] for details.
FossilOrigin-Name: 23056532e51abcff486e38a3319545e6663b4a855abe1bc443e2cd7e0473748c
2025-06-26 18:57:20 +00:00
981022b7ff
Minor API doc fixes sent off-list from brickviking.
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FossilOrigin-Name: cb4d05633a0c9cdf146f3108e1b4b10754cd79d72a425d8cc9cd21836037a01b
2025-06-25 20:42:40 +00:00
a67c71224f
Similar fix to the previous check-in, but this time for
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sqlite3_preupdate_new().
FossilOrigin-Name: 9aaff764d508cbd9823f23cdf0c510255721bc5c09be481ebc60bd8902ceb8c5
2025-06-24 18:27:59 +00:00
66cd200ede
Range check the column index on the sqlite3_preupdate_old() interface
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and return SQLITE_MISUSE if too large.
[forum:/forumpost/b617e497287235d0|Forum post b617e49728].
FossilOrigin-Name: 6a5701e6c7be25cba93e55438f950966e1dacb32eb2b23a8acc8ac53da6f0a85
2025-06-24 15:58:32 +00:00
513fff88c4
API doc typo fixes and one rephrasing improvement from brickviking.
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FossilOrigin-Name: 85e8060c4701a601d4bc8a639acd268ee4f2736193820d55ecd9b8abf864132f
2025-06-24 07:38:52 +00:00
b1560be826
Fix an SQL typo introduced by the previous check-in.
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FossilOrigin-Name: 72a81d247bc74a21d077d311969ac585d0f26bffbd210ec60f03c38bf138790e
2025-06-23 19:00:30 +00:00
28789029ee
Escape the "_" character in LIKE patterns in the CLI.
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[forum:/forumpost/6a89702f5d|Forum post 6a89702f5d].
FossilOrigin-Name: cf61cd359e666c66b6bba4407a653c799f7f07e1f5ee6b837ad467029c461a6a
2025-06-23 16:51:33 +00:00
f453e8d84e
Fix a harmless compiler warning injected by [c978aed3b6f82b3d].
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FossilOrigin-Name: f46500247b3a2f8b4a2f0f032cc4066af9cb3918e38a09c59db0a1da5747a25c
2025-06-23 13:42:59 +00:00
4c1c400d64
Improved "statement aborts at ..." log-file messages that identify the
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trigger that caused the abort.
FossilOrigin-Name: 7691264fe37300c880d612c91cf093327841fbe85fb7ec67e777e911d2cfc9ee
2025-06-23 13:28:13 +00:00
b5aa9593ac
API doc typo fixes from brickviking.
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FossilOrigin-Name: 18e07f8f53693d0dace3c4025a572c1a10582290a338aa7f0913c83842a69b05
2025-06-22 12:04:47 +00:00
a0c6de56ba
Numerous small doc typo from BrickViking.
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FossilOrigin-Name: 3aab4415de615c178205936372c625bb571bad1016c3d2e7bb2a45932356f3d6
2025-06-21 06:07:13 +00:00
b68d63158a
Enhance sqlite3BtreeSetPageSize() so that it detects early if no changes
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are needed and exists with SQLITE_OK.
FossilOrigin-Name: c978aed3b6f82b3d9d2e0ca0283c611351bca5e5496e86a9d5d0731ebcd27c84
2025-06-20 13:12:55 +00:00
37794b4ad0
Improve the accuracy of sqlite3BtreeRowCountEst().
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FossilOrigin-Name: e553fb538ec1527457e2927edf9127dccf268a8a3b5918d4fb0d066ad9676094
2025-06-19 20:00:37 +00:00
397b82cf0f
Generalize the indexCellCompare() so that works on any index page, not just
...
the current page that a cursor is pointing to.
FossilOrigin-Name: b305a7f5db183d8e0e5d62ca3c9c6260ad94bb954f7342bd3caabcd8308a21f5
2025-06-19 19:33:06 +00:00
92d1bec584
A slight doc rephrasing for clarity, suggested in the forum.
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FossilOrigin-Name: 0d6084a398edb013fcfb613eff8d75e2f86cbb5e3c8049328ede89e75db93cb3
2025-06-19 12:35:30 +00:00
a5c484b432
Doc typo fixes from [forum:0bce273669 | forum post 0bce273669].
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FossilOrigin-Name: 8f97e3f00d24b26fe87a9d3396ad855277a1a369f6f89e9c77dc9af4d203bdf1
2025-06-19 10:46:39 +00:00
ab9c91ae82
Extend the pedantic enforcement of type to VIRTUAL columns.
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FossilOrigin-Name: b734c74e55acb26eb61b60937bef870f4b55b2e2e7560a22362f5f31ba2fcd03
2025-06-18 19:04:28 +00:00
bcf25e7129
Enforce judgmental typing on STORED generated columns for STRICT
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tables. [forum:/forumpost/6caf195248a849e4|Forum post 6caf195248].
FossilOrigin-Name: 5e9279bff0482806f86657ae05ca3e916708d138bc3c3ceb3fbf454818649d44
2025-06-18 16:17:00 +00:00
9a9140ba59
Change the definition of SQLITE_DYNAMIC to a function that has exactly
...
the same type as sqlite3_destructor_type, in an effort to work around
possible legacy compiler bugs.
FossilOrigin-Name: 83553edf78c35d171a0ddf1a51306e963d715e56d95b8159b561b729cfb27843
2025-06-18 14:14:46 +00:00
df8aa3745a
Avoid writing frames with no checksums into the wal file if a
...
savepoint is rolled back after dirty pages have already been
spilled into the wal file.
FossilOrigin-Name: 5973f9b9aa828ec9274b02a124b95f452c58235eaafffbdda1c32b4ae2d5616d
2025-06-17 19:10:33 +00:00
110055cd6c
Fix a corner-case for [9441fff52cc4e19c].
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FossilOrigin-Name: 336a59eb3afd80ce048de472368df6dfc32934ee783859d37663ed8f5cf169a5
2025-06-17 18:57:07 +00:00
1ea6a53762
Avoid writing frames with no checksums into the wal file if a savepoint is rolled back after dirty pages have already been spilled into the wal file. Possible fix for [forum:/forumpost/b490f726db | forum post b490f726db].
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FossilOrigin-Name: 3a3269fe8e925a522d5df9f011220a842fb15a9f56e785884e32d2e15abda5bb
2025-06-17 11:36:39 +00:00
86d9c2d9f3
Fix an issue going back to version 3.39.0 with transitive IS constraints
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in queries that make use of RIGHT JOIN. Problem reported by
[forum:/forumpost/68f29a2005|forum post 68f29a2005].
FossilOrigin-Name: 9441fff52cc4e19c44df1a77ffe474f409d519b270c7166ce17f99e6ea48fc1e
2025-06-16 17:36:11 +00:00
d3a13f7d25
Improved debugging output for the transitive constraint optimization.
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FossilOrigin-Name: 94b53c20e9bc8687c44272419aa7a93076eebdeae9a4f50b95b96a49993f9c0d
2025-06-16 16:07:14 +00:00
6ed5aa4b9b
Make the show-%p-az-zero hack of the previous check-in configurable at
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run-time using the 0x100000 bit of either .treetrace or .wheretrace.
As before, this is all a no-op except for debugging builds.
FossilOrigin-Name: a29627d7e7f8344d9a099cc133bda85250b02dc5ee5f358ba59691e0816b5b2d
2025-06-16 15:34:26 +00:00
67f708298f
Add an "#if 0" that can be changed to "1" to cause all %p output to render
...
as 0, thus making comparisons of .treetrace and .wheretrace output easier.
FossilOrigin-Name: 65e2704c0bc329f3dd248548a2d4edb7d3ace8ceaf0b82b8618b9b1b764884cd
2025-06-16 13:51:09 +00:00
792d1d1b6d
Have sqlite3_setlk_timeout() take the database handle mutex. This fixes an assert() failure that could occur if sqlite3_setlk_timeout() were called on a threadsafe handle.
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FossilOrigin-Name: a95d126e1330e1b83f42b51f97c4c216622cf38062f3b5d72ccb76313187e850
2025-06-12 07:35:38 +00:00
23e59b34e9
Fix the concat_ws() SQL function so that it includes empty strings in the
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concatenation. [forum:/forumpost/52503ac21d|Forum post 52503ac21d].
FossilOrigin-Name: 80a78987da484d435a8242c05c48d546d430920df713b24a9d9d9fff7ba1113d
2025-06-11 00:01:42 +00:00
drh