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json-opt
Commit Graph

19158 Commits

Author SHA1 Message Date
drh
e04c9f4b33 Mutex protect access to the sqlite3_test_directory and sqlite3_data_directory 
global variables.  See
[forum:/forumpost/719a11e1314d1c70|forum thread 719a11e1314d1c70].

FossilOrigin-Name: 8e6ad3a3e942a326cf16432e16d6596c7206c05b6f45cd0ff3a9b836bcfc9deb
 2022-09-02 11:45:26 +00:00
drh
fee6431392 Improved mutex protection of the sqlite3_temp_directory and 
sqlite3_data_directory global variables.

FossilOrigin-Name: ebbe9634d6dde9e097f61fb98a79111e46de422b7bbbd9ed3af7b6f22aacf5ec
 2022-09-02 11:12:16 +00:00
drh
18a3a48db1 Experimental changes to put sqlite3_temp_directory behind a mutex. 
FossilOrigin-Name: 5ee3515fbb88bf1ae5f8b507844f82dcc429380b6ebeab9b09b52b25ee60a60d
 2022-09-02 00:36:16 +00:00
drh
44132244fa Defer deleting a transient SELECT statement associated with a flattening 
of one arm of a compound SELECT until after the parse has completed.

FossilOrigin-Name: 1c4157c71cd1e062a9c2c79787d17e34e340f28ce1e40573851dfe174f5da7d7
 2022-09-01 13:51:09 +00:00
drh
a3fc683c80 In the query planner, add a heuristic that will reduce the cost of a full 
table scan for a materialized view or subquery if the full scan is the
outer-most loop.  This is shown to speed up some queries.

FossilOrigin-Name: 609fbb94b8f01d6792e5941ab23ce041313d359f6788c4dde6b1ca749ab49137
 2022-09-01 10:29:02 +00:00
dan
73b09b87d5 Add new files for an extension to recover data from corrupted databases. 
FossilOrigin-Name: f8298eeba01cb5b02ac4d642c06f3801331ca90edea533ea898a3283981a9e49
 2022-08-31 20:45:43 +00:00
drh
9c3a114ca0 Enhance the b-tree page sorting code to ensure that sqlite3PagerRekey() never 
overloads a page number and uses only the PENDING_BYTE page for temporary
storage.

FossilOrigin-Name: 5007742886bd20de20be3973737cf46b010359911615eb3da69cd262bd9a2435
 2022-08-31 15:04:42 +00:00
drh
78d15f097a Improved comments in pcache1.c. No changes to code. 
FossilOrigin-Name: dd017bb1b3e31c7692d29dc4865d6bda871e429978c8738a39160d0114e5bf9b
 2022-08-30 16:54:41 +00:00
drh
4d28830861 Any function call can abort. Take this into account when deciding if a DML 
statement needs a statement journal.  See
[forum:/forumpost/9b9e4716c0d7bbd1|forum thread 9b9e4716c0d7bbd1] for more
information.

FossilOrigin-Name: 5c95ae6c9b93b9bcf698bb1cad93b2da2e28121b35e7c539b1ddc0ef2de33cfe
 2022-08-30 00:11:51 +00:00
drh
f0f025b340 More assert() statements in the page cache. 
FossilOrigin-Name: 7c96a56c0d1de966844da6c5a84c0cd6066130a10724797ce6f228a9182d9b85
 2022-08-27 16:11:00 +00:00
drh
f6e3e31625 Ensure that every pcache page always has either the PGHDR_DIRTY or the 
PGHDR_CLEAN bit set, even during transient page reshuffling during btree
balancing.

FossilOrigin-Name: e67f03c166277951725c194674c84da61c152a5820aa6df55a726f7dda838e92
 2022-08-27 14:43:34 +00:00
dan
aa07b36dd5 Remove a NEVER() macro for a condition that is actually reachable following an OOM. dbsqlfuzz crash-6ef3cd3b18ccc5de86120950a0498641acd90a33.txt. 
FossilOrigin-Name: b573e2cffa5fedc893ed30e76e47022b3617ac5583e1eb486afa810b2514c419
 2022-08-25 13:32:55 +00:00
drh
7383f5a7d9 Add a mutex to the sqlite3_db_config() interface so that it is threadsafe 
when two or more threads call it on the same database connection at the same
time.

FossilOrigin-Name: 459ad8846ee1ee2d3b277a291c47121692bdf477e779b06e77be8338f62237a6
 2022-08-24 17:59:00 +00:00
dan
2ce2b779bb Fix an inefficiency in the ".dump" command when outputing large blob literals. 
FossilOrigin-Name: c055d05dbdfd4643d5052c6e6a736c78651fdfcd78f15f791af903df3814832d
 2022-08-24 11:51:31 +00:00
drh
e5928b17ca Change the names of the Vdbe.pVNext and Vdbe.ppVPrev fields to make them 
unique.  Change to ppVPrev to save a few bytes and a few CPU cycles.

FossilOrigin-Name: 34b8ea31877ae8b40729d37b3f51ae7e15f38be841881ea4a37c9c8f0a52896d
 2022-08-23 20:11:01 +00:00
drh
35908b167f Enhance assert() statements to enforce tighter bounds on the P5 operand of 
the OP_Next and OP_Prev opcodes.

FossilOrigin-Name: 4e0a07fc6f96e6e7726506b7a5ee942461c1381501f253893fa94d76023b634f
 2022-08-23 17:51:39 +00:00
drh
376860ba88 Performance enhancement for sqlite3DbFree(). 
FossilOrigin-Name: c296a9d958ec360fc8d217363348b4918d665bccb3c4f27503a2dcef7db49052
 2022-08-22 15:18:37 +00:00
drh
41ce47c4f4 Add the new internal interface sqlite3DbNNFreeNN(db,ptr) where both the 
db and ptr parameters are guaranteed to be non-NULL.  Use this where
appropriate to save more than 2 million CPU cycles on the standard
performance test.

FossilOrigin-Name: e5eaa80e81fdf86f2875a912b880272b8d099b82b08e945a7988c5dd0fe9d6b5
 2022-08-22 02:00:26 +00:00
drh
00378fde23 Enhance the enforcement of SQLITE_VTAB_DIRECTONLY so that it applies to 
DML statements within triggers.  Do not allow DML stratements against
virtual tables within triggers unless either the virtual table is
SQLITE_VTAB_INNOCUOUS or PRAGMA trusted_schema is ON.

FossilOrigin-Name: 9433ea4070f52135be64569057f439e7bdb4b3f425d87167c9ebda50011210c1
 2022-08-20 19:33:04 +00:00
drh
78ed74ef8e In the ".dump" command of the CLI, if a schema statement ends with an 
unterminated comment, try to terminate that comment prior to appending
the ";" at the end.  [forum:/forumpost/d7be961c5c|Forum post d7be961c5c].

FossilOrigin-Name: 96e112da1ac56767cf49f26132833745b6020d2c60f5c36f86ca84f87ad30c81
 2022-08-17 20:18:34 +00:00
drh
16b03c0196 Enhance the "PRAGMA integrity_check" statement so that it verifies the rows of 
a WITHOUT ROWID table are in the correct order.

FossilOrigin-Name: 62f934bff495850d0763e07ffa44a557f066ecba9d039363f32287213cba819f
 2022-08-17 18:07:52 +00:00
drh
0348fc722f Minor code simplification in the code generator for PRAGMA integrity check. 
FossilOrigin-Name: a3b9c7a6c9be5c78a93e5125f16237d2d84b977eca81f527af0198e96435a995
 2022-08-17 17:14:36 +00:00
drh
a8771a1736 Change the legacy RC4-based PRNG to use the RFC-7539 chacha20 algorithm. 
FossilOrigin-Name: a0f801151925e882e120f6ab685dcacb9d3268d25b52bc665c5b927bcc7dda1e
 2022-08-16 17:18:00 +00:00
drh
cd05aafa56 Fix obsolete comments. Add new comments. Fix non-standard spacing. 
FossilOrigin-Name: a0d224c6a69941dad1f2b35edcc7ddee343b99eae2aeed74043461f3e97ef5b4
 2022-08-16 16:57:33 +00:00
drh
534945ad07 Fix an off-by-one error in the ChaCha20 initialization code. 
FossilOrigin-Name: 72e220eed446ea9a02a6ef03e09a01bcb8bbca1f3b32d2e0bf52a17d9722e2f0
 2022-08-16 16:40:54 +00:00
dan
2756f806f2 Add assert() statements to verify that the SQLITE_OPEN_EXCLUSIVE flag is always passed to the VFS when opening a temporary file. 
FossilOrigin-Name: e123da49ccae61d591abded52f4721aa10f20d75935c9a3e3fe826a9b8df2317
 2022-08-16 10:52:35 +00:00
drh
9113c87ef3 Replace the RC4-based PRNG with one based on ChaCha20. 3x faster. 
FossilOrigin-Name: 084d8776fa95c75440530028171c56547a341c9a952ba2f29bb533b538603c78
 2022-08-16 00:04:40 +00:00
drh
9c5e1e40e3 In the documentation emphasize that the use of shared cache is discouraged. 
Fix test cases so that they all work with shared cache disabled.

FossilOrigin-Name: 52c3ae063e133c5f88cad2c3084cf46218f865ac817ab937e3529d2c6a7af300
 2022-08-15 12:26:26 +00:00
drh
087f143f87 Add the (undocumented) SQLITE_DEFAULT_UNIX_VFS compile-time option. 
FossilOrigin-Name: 49828bdec5f926cd18a069d39a5db0b1e1f3528a2affcfbaa1cf7b98aca51b3b
 2022-08-12 18:46:01 +00:00
drh
f0d12d87fa Fix another harmless comment typo that causes a typo in the documentation. 
FossilOrigin-Name: bb084adb53386d8e52ca1e818a8322d2ec641b73fd8568cee01cc74c0ee9f265
 2022-08-10 18:40:43 +00:00
drh
778d334085 Remove (harmless) duplicate words in comments used to generate parts of the 
documentation.  [forum:/forumpost/54abbe9ccd|forum post 54abbe9ccd]

FossilOrigin-Name: b5e4f0db09ff7790862357df3c6fd38a2dcdfc82ff51b9f0d9470517648c844d
 2022-08-10 18:33:57 +00:00
drh
626bcc88dd Allow the name of an index to collide with a table in a different schema. 
FossilOrigin-Name: f963c2523872b59b8a7a14971f703f2eb0d021501b288597a958f6596885d0de
 2022-08-09 16:13:21 +00:00
drh
c8e9f6818b Omit the (undocumented) SQLITE_PCACHE_SEPARATE_HEADER compile-time option. 
FossilOrigin-Name: 60947da687d525e72e62bcddcdf4c5c819818855074cc318c9ee656e83897aef
 2022-08-09 14:28:54 +00:00
drh
26e817f69b Avoid trying to cast an over-sized floating point value into an integer. 
FossilOrigin-Name: 3518cd7cb1feeefc3963da72c2d258d81d8914f1e1f427da28a00b6228cf126c
 2022-08-08 16:25:13 +00:00
drh
5e10d892d6 Remove an unreachable branch in the numericType() helper routine. 
FossilOrigin-Name: a99cc008e46ab1a4fdbe2fa87202d026a10c57be55e3e9fedd935795ed6dc694
 2022-08-08 13:04:08 +00:00
drh
a3a4da0922 Do not attempt to convert an oversized floating point value into an integer. 
FossilOrigin-Name: 6c4fc8385ee22516e0b87fb647327ee7d1a564040ebe2a4d66fc999ef2908df2
 2022-08-08 12:19:13 +00:00
dan
8c3cc71a5a Fix a rounding error caused by scalar->logarithm->scalar conversion when using stat4 data to estimate some range scans. 
FossilOrigin-Name: 86e30d7c4bb1cebe25b66686d6d1ee170c1a88e5a6c1bed6652ebbb024d62062
 2022-08-06 15:28:37 +00:00
mistachkin
e2848932a5 Fix harmless compiler warning seen with MSVC. 
FossilOrigin-Name: e36217f2536d89f7a15a879fe3ead32307909c71ced42e1ae7b35f43d4744a80
 2022-08-05 05:30:07 +00:00
drh
bffd5c1ece Fix a problem with the query optimizer for LIMIT/OFFSET queries when 
underlying query is a UNION ALL and both arms of the UNION ALL are
subqueries with an ORDER BY clause.  This bug was reported at
[forum:/forumpost/6b5e9188f0657616|forum post 6b5e9188f0657616].  The
problem was introduced in 2015 (SQLite version 3.9.0) by check-in
[4b631364354068af].  See also ticket [b65cb2c8d91f6685].

FossilOrigin-Name: 6c806f64bbc9e98891bad0868575ee2ec5d0951ceb0c71d3ed417b45d5f27561
 2022-08-04 17:15:00 +00:00
drh
e24a6f58ae Fix a typo on a comment used to generate bytecode documentation. 
FossilOrigin-Name: 64348d0b665f61c3a89f51341f23ca87f939dd9e306dc58c2004e46ab04e696e
 2022-08-04 14:02:35 +00:00
drh
3cf46ee508 Performance optimization to the math opcodes of the bytecode engine. 
FossilOrigin-Name: 597347d9c39f6ed068ac942a8c9853b1b745fce1eb5e9dd30f6c1cb312b36f53
 2022-08-03 19:53:54 +00:00
drh
403f00219b Small performance increase on the binding interfaces. 
FossilOrigin-Name: aab24c37fb444804fb91177b4b522909ef1bb85383444d97d82a758f919047d2
 2022-08-03 19:37:25 +00:00
drh
3a17e2e5cf Improvement on the previous check-in. 
FossilOrigin-Name: c1ab0ea2959259cbd29f624bfd5e7366035f2dbcaab72c0bf55723c0919b7a79
 2022-08-03 17:26:32 +00:00
drh
b5a6f33e50 For an IN operator used with a RIGHT JOIN, use the number of terms in the 
vector, not the number of equality terms, to size the column map.
dbsqlfuzz 14cfdad6ca45e607163f54049ddf5065183dc657.

FossilOrigin-Name: b184c8d9222da6b420b5d7c439bbe4b737d92ffa27f5e933f4e1a9c8117b0ee5
 2022-08-03 15:58:44 +00:00
drh
3b01dd0f5d Restore a VDBE coverage macro that is mistakenly deleted for 
check-in [92ac01d41d46ab73].

FossilOrigin-Name: 01de7ec44fb1e8e6f847eaef433216b3163a44a8789451718e1c419ef840ddfb
 2022-07-26 19:10:13 +00:00
dan
b4d7f1eb88 Fix another problem related to aggregate query LEFT JOIN flattening. 
FossilOrigin-Name: 8e12c6f59bcb67be4ff131feecc5af68f4bb0afbcced2e2f7e73289aaf95d99d
 2022-07-26 18:43:45 +00:00
drh
1dd1303600 Omit a unused variable initialization in order to suppress a harmless compiler 
warning.

FossilOrigin-Name: 2d703c5e941cac72efc21d58e1e35c446b338b2927a42f587ab788826fd7f3f1
 2022-07-26 15:41:34 +00:00
drh
4b1b65ca2e Make sure IF_NULL_ROW expressions receive a separate slot in the sorter used 
to implement GROUP BY.

FossilOrigin-Name: 2bda4fca06ab6be5ad02377a7d1fd9fb9586e3181f1052e4b4937958bdd45efe
 2022-07-26 15:32:02 +00:00
drh
f4c291275b Improved AggInfo.aCol debugging output, intended to debug a problem with 
LEFT JOIN flattening into an aggregate query with GROUP BY.

FossilOrigin-Name: e717e029bde4ee68b6ea77a68721c02ddb6e296f1d310a368137ea3c4164f68c
 2022-07-26 14:37:04 +00:00
drh
e6710e83fc Add a OOM term to a single assert() statement. 
FossilOrigin-Name: 217fc3ebd423e050508d6af97e0664f301824ef9a997ed2d302c006a41227917
 2022-07-26 10:16:25 +00:00