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392 Commits

Author SHA1 Message Date
drh
ec4ccdbcb1 A new implementation of sqlite3VdbeMakeLabel() is faster and makes fewer 
memory allocations by deferring memory allocation until 
sqlite3VdbeResolveLabel() is called, at which point the code generator has
a better idea of how big the relocation table needs to be.
The sqlite3VdbeMakeLabel() routine now takes a Parse* parameter instead of
Vdbe*.

FossilOrigin-Name: 4a0929ac76d8aa5dd65eac3b83d6bbf41e505e01d175ca0fb2b19ba02d439415
 2018-12-29 02:26:59 +00:00
dan
f6e015fab9 Fixes for SQLITE_OMIT_VIRTUAL_TABLE builds. 
FossilOrigin-Name: 9bcdec85e21a5228c700f7373b92ae7ea14b585bcda34235b605be4f7ec15a15
 2018-11-28 08:02:28 +00:00
drh
e1857cc015 Performance improvement in subroutine that decides whether or not a table 
is read-only.

FossilOrigin-Name: 6e4968b00507c4fdbe7e3c91f3f9cd61c6f1848092ddcf306f9fcb101a47fce7
 2018-11-07 16:46:43 +00:00
drh
0f0d3ddf71 Enable DEFENSIVE mode by default for tests. This requires lots of case of 
turning DEFENSIVE off in order to dodgy things to the database for testing
purposes.  No all of those cases are yet handled, so "make test" does not run
to completion.

FossilOrigin-Name: a1d6c6712c3304fd736077432c8c180692cf7d79be7f3a073510b6dab0eb951f
 2018-11-06 19:26:04 +00:00
drh
aef15e74c8 Turn on defensive mode for running test scripts. Does not yet work. 
FossilOrigin-Name: 1c1d24edbb732f2a2002a741c7a7afdd010b67e1b5e6d90ff36c6428897e7612
 2018-11-06 15:57:59 +00:00
drh
fc25721c9e Only allow shadow table to be written from within a recursive SQL call. 
Omit the SQLITE_PREPARE_SHADOW flag.  Some tests are failing because the
tests depend on being able to write to shadow tables.

FossilOrigin-Name: d890c6582524677666e6f5b5817331dec332ade16b2f744cbb8a3c7dd9b63e21
 2018-11-06 14:03:07 +00:00
drh
5a65470300 Add enforcement of read-only on shadow tables. This does not currently work 
since some virtual tables are attempting to update shadow tables using
sqlite3_exec().

FossilOrigin-Name: f79b47c9859de597d5924870752dd7cab89c8f0608e5cceb2281f6ffb2e91930
 2018-11-06 13:37:20 +00:00
drh
0f1c2eb5f2 Correct the internal logic for SQLITE_DBCONFIG_DEFENSIVE. 
FossilOrigin-Name: 76094345821246c887a31a234b339d03a78eddbb9fab33b06c3c20797c038349
 2018-11-03 17:31:48 +00:00
drh
a296cda016 Add the SQLITE_DBCONFIG_DEFENSIVE flag. 
FossilOrigin-Name: af3f29d49359af2291b1d9e06e0db76fd000fbd24b4ac84d2668a0d1322efd83
 2018-11-03 16:09:59 +00:00
drh
8c60719132 Further logic simplifications that flow out of the omission of the column cache. 
FossilOrigin-Name: 7d9072b027cc28dd8ecf5e2686d821017997445c15124eebe2839984622af4db
 2018-08-04 15:53:55 +00:00
drh
02ceed058a Completely remove the column cache logic, which has been a persistent source 
of bugs for many years.  We recent enhancements to the performance of the
OP_Column opcode, the removing the column cache actually makes speed-check.sh
run faster.  It also saves about 1,800 bytes of code space.

FossilOrigin-Name: 3f5f60cd7529330209027fdae8129cca420cec1050eae50a7750d0b715b56972
 2018-08-03 23:04:16 +00:00
drh
338e311acb When doing a one-pass UPDATE or DELETE on virtual tables, close the cursor 
prior to running VUpdate.  This allows one-pass to work on virtual tables
that do not allow concurrent reads and writes.  Enhance rtree to take
advantage of this new capability.

FossilOrigin-Name: b816023ce07d01024d5769e16db924374a49bf909edd12dc1344a0a1ef693db5
 2018-05-24 23:51:57 +00:00
drh
7c48360d7c Avoid the use of statement journals on DELETEs of a single row without 
triggers or foreign keys.

FossilOrigin-Name: 20bf5800808ea02b2aa4bf01a380926784c0e7514a2c73ca303cac1f5c732ae0
 2018-04-20 19:46:52 +00:00
drh
7963691314 Fix the handling of "PRAGMA count_changes=ON" with UPSERT. Also improved 
the implementation of count_changes in other places, without changing the
behavior.

FossilOrigin-Name: c6f71115eb933c2aee295bc31e5139112463c28e15a3b3ea242fd9bac168aed9
 2018-04-19 23:52:39 +00:00
dan
614efe2b4b Experimental change to include changes made to the sqlite_stat1 table in 
changesets generated by the sessions module. sqlite_stat1 entries in such
changesets are ignored by legacy clients.

FossilOrigin-Name: bd46c4429693545eb16db85692fc591ac529796aa746f5f21df1ce4380619320
 2018-01-12 16:44:29 +00:00
drh
ee15962dd0 Make sure the bComplex variable in sqlite3DeleteFrom() is initialized when 
compiling with -DSQLITE_OMIT_TRIGGER.

FossilOrigin-Name: e526d0c40b971d970367a52a57d3920cb64e6a98920114bfac46ba009f0b1eb5
 2017-12-08 14:07:14 +00:00
drh
8c0833fb21 In the parse tree, combine LIMIT and OFFSET into a single expression rooted 
on a TK_LIMIT node, for a small code size reduction and performance increase,
and a reduction in code complexity.

FossilOrigin-Name: 3925facd942c9df663f9b29b1e6f94f6be14af8c2b99eb691bfc836b4c220826
 2017-11-14 23:48:23 +00:00
dan
3b61ebb8de Omit some extra code from non-SQLITE_ENABLE_UPDATE_DELETE_LIMIT builds. 
FossilOrigin-Name: 72be33f9c84de3ec4afc40549482417456ca82c1d16b473dc034b144055271e5
 2017-11-10 20:13:14 +00:00
dan
ca3e3c3f1a Fix a problem involving "DELETE/UPDATE...LIMIT" statements that use an INDEXED 
BY clause.

FossilOrigin-Name: 09f94c2c8199b0d23a45cc062ca9561f9e5ddfcba117100e41889ce199d21bdb
 2017-11-10 16:14:26 +00:00
dan
26caf5bef1 Fix a problem with (DELETE...LIMIT) statements against WITHOUT ROWID tables 
with a single column PK.

FossilOrigin-Name: 35477a3dcceadf5dade8e036d5a2ce91b9ca83c4b85d309db233bdbcf538b1cc
 2017-11-10 15:42:21 +00:00
dan
b3c16b899b Add SQLITE_ENABLE_UPDATE_DELETE_LIMIT for views and WITHOUT ROWID tables. 
FossilOrigin-Name: 584b88aaf89ab30cb51185396b7b50c6ecba286add023a26ab41d865b9c605ce
 2017-11-09 19:53:06 +00:00
drh
e3740f272b Experimental changes that allow a WITHOUT ROWID virtual table to be writable 
as long as it has only a single-column PRIMARY KEY.

FossilOrigin-Name: ab9ee4c1e64c09c7130e385a23d043d78bad95dff5509c7adc9b992350a4a537
 2017-08-10 15:19:39 +00:00
drh
3e34eabcdf Allow indexes to be created on date/time functions as long as the 'now' 
date and the 'localtime' and 'utc' modifiers are not used.

FossilOrigin-Name: 0a5e1c04d9d07bb7fd6546a9ddac1bf42b19ea19c2b79570aea6cd4226887a27
 2017-07-19 19:48:40 +00:00
drh
170ad68a40 Change the name of the OP_Seek opcode into OP_DeferredSeek for better 
clarity of function.  No functional code changes.

FossilOrigin-Name: ab33d299c7dab52703d06f3441c8a98c6c809b2612ec65d71aab2919bd2b1540
 2017-06-02 15:44:22 +00:00
drh
1e1c4226ee Fix a documentation typo. No changes to code. 
FossilOrigin-Name: cfa4aa203646f44b303138c25672293bb87d97126fe2030d4709e8ad7814a807
 2017-05-18 18:17:55 +00:00
drh
9418921c59 New requirements marks and documentation for the authorizer. 
FossilOrigin-Name: 3980ea0911b3ad3f86d7a7bdc6503f233315c274f473e18831e13eda2c238eeb
 2017-05-11 13:43:57 +00:00
dan
50133dea28 Fix a problem causing the pre-update hook to be invoked by DROP TABLE 
statements.

FossilOrigin-Name: fbb6bf1b69cfd581b4ffd778c344e3fbd9c9406f
 2017-01-27 17:02:26 +00:00
drh
da060052e3 Back out check-in [0b3174e0b1364c] and replace it with a better fix 
for ticket [91e2e8ba6ff2e2] - a fix that does not cause the problem
identified by ticket [7ffd1ca1d2ad4ec].

FossilOrigin-Name: 0613665274346917f5482f9210bf0c60a0fed7d9
 2017-01-16 16:43:02 +00:00
drh
68116939eb Improvements to the iIdxNoSeek optimization of sqlite3GenerateRowDelete() 
so that it is automatically disabled for BEFORE triggers but works in all
other cases.

FossilOrigin-Name: 3178ec4c27efc4ff84bcd17ddb17ec50a6ac96b3
 2017-01-07 14:47:03 +00:00
drh
4cef5b1c81 Critical fix to the previous check-in so that it works when there are 
BEFORE triggers that move the cursor before the OP_Delete has a chance to
be applied.

FossilOrigin-Name: db2c0960ffb3b396b20e0441d3edb812254c82bc
 2017-01-07 14:26:28 +00:00
drh
ad1d9a8707 Avoid an unnecessary btree seek while deleting an index entry due to a conflict 
on a REPLACE operation.

FossilOrigin-Name: f0495c5133d0dc04d63521136d6b9ca440792cdf
 2017-01-07 03:26:50 +00:00
drh
79df77821a Refactor the Table.nRef field as Table.nTabRef for easier grepping. 
FossilOrigin-Name: 9cae4c2e300e20304ced0dc8c1415c4922185928
 2016-12-14 14:07:35 +00:00
drh
f14b7fb73b Add the sqlite3VdbeAppendP4() method for adding P4 content to the most recently 
coded instruction.

FossilOrigin-Name: 28883e8f3e92a8015fb5f6c8ae8580833931543d
 2016-12-07 21:35:55 +00:00
drh
abfd35ea03 Performance improvement and size reduction in the Expr node allocator 
function sqlite3PExpr().

FossilOrigin-Name: 2a81763e68cdf9b8c46389b1e1a87bc2084b53e7
 2016-12-06 22:47:23 +00:00
drh
9057fc7c7f Remove the OP_RowKey opcode. Use OP_RowData in its place. 
FossilOrigin-Name: 6ac7b07a4aff2e1a9031289e3dafdb9ac0071c24
 2016-11-25 19:32:32 +00:00
drh
65f38d960d Remove unnecessary OP_Close opcodes for a size reduction and performance 
increase.

FossilOrigin-Name: 32be7aae92ee48bf2cd260ea41e79c2bc62738f9
 2016-11-22 01:26:42 +00:00
drh
9b4eaebc68 Enhance the OP_IdxInsert opcode to optionally accept unpacked key material. 
FossilOrigin-Name: 89d958abbac45f2ca5954080cd9e74ec9a07ebb2
 2016-11-09 00:10:33 +00:00
drh
511f9e8d29 Remove the internal sqlite3CodeOnce() interface, replacing it with a 
direct call to sqlite3VdbeAddOp0(v,OP_Once).  Slightly smaller and faster.

FossilOrigin-Name: c3774c6a5fe48af91fda28e9e18c6ed9053ea992
 2016-09-22 18:53:13 +00:00
drh
a0daa751f8 Fix SQLITE_OMIT_AUTHORIZATION so that it compiles cleanly. 
FossilOrigin-Name: a3e3b3e1c57178ccd38fc7375ec1de8e8ae45372
 2016-09-16 11:53:10 +00:00
drh
69c338263a Rename the Db.zName field to Db.zDbSName to make it more descriptive and to 
distinguish it from all of the other "zName" variables scattered throughout
the code.

FossilOrigin-Name: 92a22f01343a898455fd61c3b8e7d7c954f5b569
 2016-08-18 14:33:11 +00:00
drh
bcf6884afd In the WHERE generator, when building code for a DELETE operation, make sure 
that seeks to the main table are not deferred.
This is a better fix for the [16c9801ceba49] bug than the previous.

FossilOrigin-Name: 150dd09ebd7b17234a79e1811a0fae8b0a7a40d5
 2016-05-06 16:06:59 +00:00
mistachkin
9fe3fbbc35 Fix typo in comment. No changes to code. 
FossilOrigin-Name: 6c43ba1c8753a4029e127078652f265c408a01c0
 2016-05-04 19:04:20 +00:00
drh
91da707280 Only disable the one-pass DELETE optimization if the WHERE clause contains 
a correlated subquery.  Uncorrelated subqueries are allowed.  This is a
refinement of check-in [3f221f592a9a1] that is the fix for
ticket [dc6ebeda9396087].

FossilOrigin-Name: aae389692a2ed2cc92151d51fb2cd5a16921c469
 2016-05-04 14:45:30 +00:00
drh
57a07ba9a9 Disable the multi-row one-pass DELETE optimization when the WHERE clause 
contains a subquery.  Fix for ticket [dc6ebeda9396087].

FossilOrigin-Name: 3f221f592a9a19009076e568566c59801cd3fc32
 2016-05-02 12:18:56 +00:00
drh
08de4f7933 Factor out the common operation of setting the Expr.x.pSelect field of an 
Expr object into a subroutine.

FossilOrigin-Name: 6a5cceee486c5e3625556e4c7076ff90e9d8fa43
 2016-04-11 01:06:47 +00:00
drh
0ac7cfaf99 Merge enhancements from trunk. 
FossilOrigin-Name: a533608cb0de3cbc1e28a794aab99864b8c249f4
 2016-02-05 14:15:34 +00:00
drh
575fad6500 Add the slightly faster sqlite3DbMallocRawNN(db,n) routine for the majority 
cases where db is guaranteed to be not NULL.

FossilOrigin-Name: 0a802e96ab06e2643834b83671fa8353da1a348d
 2016-02-05 13:38:36 +00:00
drh
33c1eb6477 Merge all recent enhancements from trunk. 
FossilOrigin-Name: f3f9200115caf4b356f90ec97c351d1afbcb9bf6
 2016-02-02 02:22:30 +00:00
drh
def19e3b48 Change the name of the BTREE_IDXDELETE flag to BTREE_AUXDELETE, to better 
reflect its purpose.

FossilOrigin-Name: 1d3bf6bebdda9f96734bc139601e9b05344ea0b4
 2016-01-27 16:26:25 +00:00
drh
b89aeb6aa2 Add assert() statements on the nExtraDelete variable in vdbe.c to try to verify 
that the FORDELETE and IDXDELETE flags are being generated correctly.  Those
flags are not currently generated correctly, and so the assert()s trip on this
check-in.

FossilOrigin-Name: dde1db0dd2e2cf04706117629756c352b178ebb8
 2016-01-27 15:49:32 +00:00