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23,340 Commits 1,608 Branches 185 Tags
f9a49b0cad3eeda68ed1751a42f7af91c742bc18
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264 Commits

Author SHA1 Message Date
drh
2a6a72a81c Ensure that the db->init.azInit array is initialized at all times. 
dbsqlfuzz 0ad6d441f9bf3dfc32626a9900bc1700495b16f9

FossilOrigin-Name: c7560c1329965ab57cd71393c044b110561b83641d08677bc51044df9e377882
 2021-09-24 02:14:35 +00:00
drh
7a7cefa0b8 Improved defense against OOM errors in sqliteInitOne(). 
dbsqlfuzz 429db39cd5777c46479641e8637c48c62890042d

FossilOrigin-Name: b6c57e0e2a9658417a0a5548e73007faa59c837b9ad87293bc216feef980717a
 2021-06-13 17:55:58 +00:00
drh
569143c851 The SQLITE_NoSchemaError flag should not apply to OOM errors while parsing the 
schema.

FossilOrigin-Name: 9cc484ad1a42f0821e53be6df46b1811dc8059e5aaf2f6c3e667105a55893b97
 2021-04-13 13:20:55 +00:00
drh
6000e08d33 Earlier detection empty_result_callbacks in sqlite3InitCallbac() to avoid 
problems with corrupt schemas an writable_schema=ON.
dbsqlfuzz ca4ca43bdb22eab9859de4979aec615af851e111.

FossilOrigin-Name: fb305fe077a0058861427f107957fcc3d2b1443cdd11a7f145df138ca3bb9f4e
 2021-04-13 13:01:07 +00:00
drh
2389048f29 As a continuation of [1f66a85b7757754f], ensure that an OOM that occurs 
while checking the validity of the schema is reported out as SQLITE_NOMEM
and not as SQLITE_SCHEMA.

FossilOrigin-Name: 5045c8a748f0065638d0ff4f6e3ccd124183fbc518cb9b0418d125b04dbc1491
 2021-04-05 11:39:55 +00:00
drh
ad3930be46 Take care not to change an SQLITE_NOMEM error into SQLITE_SCHEMA. 
FossilOrigin-Name: 1f66a85b7757754ff9aa0a626f66250c5fabc5fc8ab67bbc4b2ae8e6d9231a72
 2021-04-03 20:35:08 +00:00
drh
6d0053cfa7 Extra comments and testcase() macros associated with the new 
sqlite3ParserAddCleanup() mechanism.  No changes to release builds.

FossilOrigin-Name: c3c8691121e6cb7bfc326212cc81a7472c0e6f22e655ab024bd4bd885e1cd878
 2021-03-09 19:32:37 +00:00
drh
a79e2a2d28 Materialize any CTE that is used more than once. 
FossilOrigin-Name: ba59159fbe6b83fb6d79fbfee22d983768b0ebbaac7e99d2ac66c810e5e04100
 2021-02-21 23:44:14 +00:00
drh
a7da40f377 Merge changes from trunk into the alter-table-drop-column branch. 
FossilOrigin-Name: 9ea640073f8809dfe2612ae1ea384a938b433f884c54d9e5aa3712de79397ac1
 2021-02-18 22:47:34 +00:00
drh
c54246ffdf Use the sqlite3ParserAddCleanup() mechanism to ensure that the AggInfo 
structure associated with an aggregate query is deallocated, for a performance
increase and size reduction.

FossilOrigin-Name: 7a1399671fa10c64d5358cc4d364d24c643fe9dd8da923356462267ee7962f61
 2021-02-17 21:13:14 +00:00
dan
6a5a13df97 Fix various issues with the changes on this branch. Add test cases for the same. 
FossilOrigin-Name: 10538ec6fc1642dfc2ca6cef06ce6cb9e124847b421ccf01f5842064fad379ab
 2021-02-17 20:08:22 +00:00
drh
5e5683ae46 Fix a harmless compiler warning. 
FossilOrigin-Name: 83ec01e38cbd22147ba544e15eae32c72e0523a55b54851e483dc2effc64f206
 2021-01-13 21:05:07 +00:00
drh
21d4f5b53a Fix a potential use-after-free following an OOM in sqlite3ParserAddCleanup() 
and add a mechanism to detect situations where this might occur in the
future.

FossilOrigin-Name: 38ef8ab9830e12acd2c710e113939b1f8dced02612c6933c37a3c948a4030d0a
 2021-01-12 15:30:01 +00:00
drh
cf3c078f93 Add a linked list of ParseCleanup objects to the end of a Parse object and 
use that list as a place to put other sub-objects that need to be deallocated.
Have a single such list for infrequently used sub-objects is more efficient
than doing an a separate check for each kind of sub-object.

FossilOrigin-Name: affa2b7b316941b8a6c4d0d1ff212c81a593faf1d05d129e14d2b70d73a25c59
 2021-01-11 20:37:02 +00:00
drh
630fc34c1a Faster and smaller test to ensure that the sqlite_schema.sql field is always 
a CREATE statement of some kind.

FossilOrigin-Name: 76de2bb04b1c02a6c0300cd61d9b3d2477d845aa0d1cdb9dbe4f354b9fedd923
 2021-01-01 21:02:37 +00:00
drh
88efc796c2 Size reduction and performance increase in sqlite3Prepare(). 
FossilOrigin-Name: 41f45c8e894f48049325ccfef12cec0887b636bfad5d531a47628eb9e8612924
 2021-01-01 18:23:56 +00:00
dan
2b06b0769e Ensure that the busy-handler count is reset at the end of each sqlite3_file_control() and sqlite3_prepare() (and _v2() and _v3()). 
FossilOrigin-Name: 5dd05940617fb05ee2faf212b15afc3a8e9695318eccb76761b37359fea681d1
 2020-09-04 17:30:59 +00:00
drh
99744fa4ab Add support for the sqlite3_txn_state() interface. 
FossilOrigin-Name: ad195e3dd89d0f33b50070c18fb8f43c4eb24162515dfdd7c04d9e7d96b902a2
 2020-08-25 19:09:07 +00:00
drh
48bf2d72b9 Fix unreachable branches. 
FossilOrigin-Name: 905752da9815ff8242b3cb9a77b1ffdc5cfc76143f47c774890f617a542457a5
 2020-07-30 17:14:55 +00:00
drh
b140347395 Fix a typo in an error message. 
FossilOrigin-Name: 849b03d8de62251707ee0d31c9f1cd98cbd296c70c1a2c8d7c1658840a930fe4
 2020-07-23 15:23:53 +00:00
drh
ca439a4967 Disable rootpage bounds checking when the SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS 
setting is off, to facilitate reaching obscure error states during testing.

FossilOrigin-Name: d7dd4fc464c791915f646b1ad228697d1fa16f530fc7d0e9aa702c8df3068c65
 2020-07-22 21:05:23 +00:00
drh
69306bf43a Improvements to rootpage bounds checking during schema parse. 
FossilOrigin-Name: 75599a9731be19e213a8ae174b038a43381bc6883a6b7f4058c2c1625fdea432
 2020-07-22 20:12:10 +00:00
drh
3b3ddbae36 When parsing the schema, detect out-of-bounds rootpage values and throw an 
error.

FossilOrigin-Name: 6c3a2727dc912ed800146e07db5d15d0f3468d13701165ba763c4b114c3e18e8
 2020-07-22 18:03:56 +00:00
drh
bb39ac7773 Most test cases now passing. 
FossilOrigin-Name: 92e2ab38930c76811dbf5abfe6b9ea9e12562a4bb4bb06cdb0cf49ac30da0bc3
 2020-07-22 13:56:14 +00:00
drh
abc3815860 Continuing work toward supporting unsigned 32-bit page numbers. 
FossilOrigin-Name: 9ce1710aad43cebe5ad50859c7685fb83e40cdd4a60913bd2b7e659bc59942fd
 2020-07-22 13:38:04 +00:00
drh
067b92ba00 Extend the refactoring into extensions. Clean up stray newlines. 
FossilOrigin-Name: 7a876209a678a34c198b54ceef9e3c041f128a14dc73357f6a57cadadaa6cf7b
 2020-06-19 15:24:12 +00:00
drh
1e32bed3c1 Further refactoring of the schema table name. 
FossilOrigin-Name: 9536fa0ae0c1ae6e2e98d2fa11e5acda7f3c9b8ca5061b6f7f8cae63a11d936b
 2020-06-19 13:33:53 +00:00
drh
bf7909734a AggInfo objects might be referenced even after the sqlite3Select() function 
that created them has exited.  So AggInfo cannot be a stack variable.  And it
must not be freed until the Parse object is destroyed.

FossilOrigin-Name: 3c840b4df306e2db1da08673e9ede973b4cb6d2b3f9eeeab5835e39452ee3056
 2020-06-07 20:18:07 +00:00
drh
bdd4f7d91c Innocuous changes to help Coverity avoid false-positives. 
FossilOrigin-Name: 4ec8a5a203f10d228d0b3389120638766cc343179dbe38d5dbf69b650765934c
 2020-05-26 10:54:46 +00:00
dan
0ea2d42ac3 Report an error if the main, or any other, database encoding is modified by an external process (perhaps using the backup API) after the db has been opened. 
FossilOrigin-Name: 895bd20b29e223496e1585483c6ce3335ae9050f2e5de4d6b69d0e40df396862
 2020-03-05 18:04:09 +00:00
drh
42a630b1da Change the sqlite3.pDfltColl (the default collating sequence for the 
database connection) so that it is the collating sequence appropriate for
the database encoding, not the UTF8 collating sequence.  This helps to
ensure that the database encoding collation is always used, even for
expressions that do not have an defined collating sequence.
Ticket [1b8d7264567eb6fc].

FossilOrigin-Name: 4a5851893c3d71cc823b6ab5df5e58a852cd322fff26290f1ea05b63d67f564a
 2020-03-05 16:13:24 +00:00
drh
f3ce2483f5 Save CPU cycles in sqlite3Prepare() by, among other things, shifting the 
EXPLAIN column label logic over to sqlite3VdbeMakeReady().

FossilOrigin-Name: 1ca5ef84506aac3e2f08baa36095b3befdeedf2a3443fcd9154a277b55cbf64b
 2019-10-09 01:19:07 +00:00
drh
705e73344e Omit the check for conflicting shared-cache locks in sqlite3Prepare() if the 
database connection uses no shared cache.  We might be able to go back and
remove this code completely, due to the newer Schema.iGeneration logic, but
that will take more analysis.  This check-in gives the speed benefit but not
the reduction in code size.

FossilOrigin-Name: 0b73a09270dfafb27f8d1762b547ef8178c9da66f45e7153ff0b76272dfa92f5
 2019-10-05 19:53:21 +00:00
drh
a22d2fca33 Call sqlite3Prepare() directly, rather than going through sqlite3_prepare(), 
when processing the sqlite_master.sql column for a schema.

FossilOrigin-Name: cc49380ea76a4a05843d3a0bdfb925464dc9d72c33cf5ab5243dd07d161ad038
 2019-10-05 18:33:25 +00:00
drh
31f69626df Performance optimization to the lookaside-memory disabling mechanism. 
FossilOrigin-Name: 17ce1c49cb0ed6fdd8c7c33431bc2afa217f1092c99b8dd608890a8e7aec7fb1
 2019-10-05 14:39:36 +00:00
drh
d4da4936cd Avoid downgrading SQLITE_CORRUPT errors detected by the schema parser into 
SQLITE_NOMEM or SQLITE_ERROR errors.

FossilOrigin-Name: b2e79f8ff0836fcc98a2df9377aad9137307c34058030ecd1b5d4ec3277ed36a
 2019-08-15 13:46:39 +00:00
drh
c5a93d4c85 Validate the type, name, and tbl_name fields of the sqlite_master table when 
loading the schema, unless writable_schema is engaged.

FossilOrigin-Name: 724f4df9ccc2b683f7091a3f7a8c20ee210f44d7a610cd1b4c49da1c274add08
 2019-08-12 00:08:07 +00:00
drh
08e2e8e680 Mark an unreachable branch using ALWAYS(). 
FossilOrigin-Name: 0fff105a3e501fd91877d67761459eb0323e6cf79916242027cce0d05697f554
 2019-07-14 00:15:07 +00:00
dan
1efcc9dd96 Another very small performance improvement. 
FossilOrigin-Name: 7a1e30a17f57ca006dd84b6f97b0c7811bf4c6da4b02903452ffc4bc363cab9b
 2019-07-05 19:10:41 +00:00
drh
8d40673c84 Detect if two indexes of the same table share a common rootpage while 
parsing the schema, and throw an error immediately.

FossilOrigin-Name: f21c6f1343edc4ba68f9f8e68caac34da0d1c651526ecaf61c0e2d66593a555e
 2019-01-30 18:33:33 +00:00
drh
69ab18d213 More aggressive early detection of orphaned and malformed autoindexes when 
parsing the schema.

FossilOrigin-Name: 10f9e39d6ed2413fa9abc6c82da3ed48f32a42b6190b6219fca7faf850d05113
 2019-01-10 14:33:15 +00:00
drh
6b86e51eea If the OP_ParseSchema opcode with a non-NULL P4 operand does not parse any 
rows out of the sqlite_master table, that indicates that the sqlite_master
table is corrupt, so raise an SQLITE_CORRUPT error.

FossilOrigin-Name: 598d7358e7329f0de6e3defc217665909e46874258ac29592ee2fd53e6411cda
 2019-01-05 21:09:37 +00:00
dan
1ea0443c2d Add new sqlite3_prepare_v3() flag SQLITE_PREPARE_NO_VTAB, for preparing 
statements that are not allowed to use any virtual tables. Use this to prevent
circular references in triggers on virtual table shadow tables from causing
resource leaks.

FossilOrigin-Name: 25666e3d03950caf753295cdb55df162e07dbcf6840b05875c6e0b127c469ecb
 2018-12-21 19:29:11 +00:00
drh
643d855da9 Refactor the sqlite3_normalized_sql() implementation. This is a 
work-in-progress. There are still issues.

FossilOrigin-Name: a4c890b0af9786295e6df05022009d8946550adb873535c610be805c2b7a4083
 2018-12-10 16:00:57 +00:00
drh
893bd3751b Fix the sqlite3_normalized_sql() interface so that it renders 
double-quoted string literals as "?".

FossilOrigin-Name: 0d8e150434bbd179696f1ffe71d1e06cb3d43e6468496c7e481fca8486387bad
 2018-12-07 16:32:11 +00:00
drh
d5b44d60c7 When masking bits off of sqlite3.flags, make sure the mask is 64 bits 
in size so as not to accidentally mask of high-order bits.

FossilOrigin-Name: 53d3b169d8e1892163526caff2c843302c92e280fdeff6831e23a9bb15b82be3
 2018-12-06 17:06:02 +00:00
drh
7b278f0c3d Get rid of the hash table used to track IN operators in the 
sqlite3_normalized_sql() implementation.  Use simple integer variables
instead.

FossilOrigin-Name: 272dc74fd0304d6a28aaa8798d13e2f950c1a24d92d17519e3c32aef86714586
 2018-12-05 23:56:02 +00:00
drh
253a6af532 The sqlite3_normalized_sql() interface should not be transforming quoted 
identifier names into wildcards.  Fix this, and at the same time simplify
the code substantially.

FossilOrigin-Name: e8540377ec66fa5f9ae3c93bedb5c094057698199c37fc211f7ea95429e815e4
 2018-12-05 23:45:46 +00:00
drh
d4a4dd6ebc Fix an imbalanced lock problem in sqlite3Normalize() introduced by the 
simplification in [94ea6379178e3ff6a].

FossilOrigin-Name: f69624373e33c4d370a9264a317ffdb0adbce967a950f243de2b41161a8c7ded
 2018-12-05 21:55:39 +00:00
drh
19efd0db41 Simplifications to the sqlite3_normalized_sql() implementation. 
FossilOrigin-Name: 94ea6379178e3ff6a0d1d5819ca4ac558bdadb1ca8a3637c797079db7dc0cd61
 2018-12-05 17:48:57 +00:00