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Code Activity
14,933 Commits 1,610 Branches 185 Tags
898f70bc28c4536a3b42c93d7d7aa8f68ca78c8a
Commit Graph

289 Commits

Author SHA1 Message Date
dan
fd261ec67e Modifications to pass a flag to internal routine sqlite3BtreeCursor() when a cursor that is used solely for deleting b-tree entries, or for obtaining the components of keys to delete from other b-trees, is opened. 
FossilOrigin-Name: cdc92919e600007cae5eb61223684f48a65babc0
 2015-10-22 20:54:33 +00:00
drh
ce78bc6e7e Enhance the use of the column cache for UPDATE statements, making them 
more efficient for the case where a column is modified to be an expression
of other unmodified columns.

FossilOrigin-Name: 871e091df651b2275a672c35ff938bd4b6db0d7f
 2015-10-15 19:21:51 +00:00
drh
728e0f91bb Compiler warning fixes: Rename some local variables from "j1" to avoid a 
name collision with the j1() bessel function in the math library.  Omit a
dummy initializer that gcc 4.6.3 does not like.

FossilOrigin-Name: 9ddef84d432813f3ece8012047d08441caa3315d
 2015-10-10 14:41:28 +00:00
drh
4b92f98ccc Use symbolic names XN_ROWID and XN_EXPR in place of the (-1) and (-2) 
magic numbers in Index.aiColumn[].  Add asserts to help verify that
Index.aiColumn[] is always used correctly.  Fix one place in FK processing
where Index.aiColumn[] was not being used correctly.

FossilOrigin-Name: 7d272aa62cd4cbbf4b5d04e3b918de27671e8301
 2015-09-29 17:20:14 +00:00
drh
c149f18f4d Create the sqlite3IsToplevel(Parse*) interface to check to see if a top-level 
VDBE is being coded (versus a trigger) and use that interface.

FossilOrigin-Name: 59662cd2b65255a30e1a420331c07c51b644621a
 2015-09-29 13:25:15 +00:00
drh
94f26a1e22 Fix compiler warnings. 
FossilOrigin-Name: d1a0783854d2e9272320d9ddfa58362532f58d1a
 2015-09-29 12:32:56 +00:00
dan
354474ad6d Add tests for fts3 and onepass update/delete operations. Also fix a problem with onepass updates that do not affect any rows. 
FossilOrigin-Name: 820c804468abff692742952de670c5d906a50956
 2015-09-29 10:11:26 +00:00
dan
0f40037eee Also allow UPDATE on virtual tables to use the onepass strategy. 
FossilOrigin-Name: 1aa27d706db9b2e21737ce4b94b47ecd12c2570f
 2015-09-28 20:03:49 +00:00
dan
f0ee1d3c12 Experimental change to use a single-pass approach for DELETE statements on non-virtual tables that do not fire triggers or require foriegn-key processing. 
FossilOrigin-Name: eaeb2b80f6f8f83679c8323a81bb39570ec946fe
 2015-09-12 19:26:11 +00:00
drh
34de0c8c5e Merge enhancements from trunk. 
FossilOrigin-Name: 1ab10cbf27245961b40eda1ce70f35646f0a9966
 2015-09-03 14:18:12 +00:00
drh
076e85f59c Add the sqlite3VdbeLoadString() and sqlite3VdbeMultiLoad() routines to help 
with code generation, especially on PRAGMAs.  Rename sqlite3VdbeAddGoto()
to just sqlite3VdbeGoto().

FossilOrigin-Name: 847387ec8e6fef283899578fb232b2c23b00ee5b
 2015-09-03 13:46:12 +00:00
drh
2991ba050b Add the sqlite3VdbeAddGoto(v,i) routine as a shorthand for 
sqlite3VdbeAddOp2(v,OP_Goto,0,i).

FossilOrigin-Name: be78f413df1b0d874b44a866ef6bf17543d7e8a2
 2015-09-02 18:19:00 +00:00
drh
760b32dff2 Merge trunk enhancements. 
FossilOrigin-Name: e8b02902c48f3668dcff7b1767347ac7ef3c971e
 2015-08-25 19:24:11 +00:00
drh
e910769817 Use the sqlite3IndexColumnAffinity() routine to quickly and correctly find the 
affinity of an index column.

FossilOrigin-Name: 1ee089a72d789002a0a377347fc51e08ab32fb14
 2015-08-25 19:20:04 +00:00
drh
1f9ca2c84c Add code to maintain indexes with expression arguments across DELETE, INSERT, 
and UPDATE statements.  Legacy tests pass, but the new code paths are still
largely untested.  The query planner currently makes no effort to use
expression indexes.

FossilOrigin-Name: efaabdb71626bdc03768e87e186c72f6f3da75b2
 2015-08-25 16:57:52 +00:00
drh
e2248cfd2d The SRT_Table type for the SelectDest object is now just an SRT_EphemTab for 
which the ephemeral table has already been allocated.

FossilOrigin-Name: b9727e6bbfc3c62c601227e86e62f2f39792fd1d
 2015-05-22 17:29:27 +00:00
dan
dd8c460081 Fix a crash that could occur if the WHERE clause of an UPDATE statement on a view that does not feature a column named "rowid" contains a term such as "rowid=?". 
FossilOrigin-Name: 8523670d50004f3112b7871f11c8b8b02aab96ab
 2014-10-28 16:50:10 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
2c3ea0694f Part of the change in the previous check-in was incorrect and can result 
in an incorrect UPDATE for WITHOUT ROWID tables.  This check-in fixes the
problem.

FossilOrigin-Name: ee5f6eae57a656d09a4b3f7fbef664b2c696ddb4
 2014-08-04 21:26:58 +00:00
drh
7248a8b2b9 Further enhancements to IN-operator processing. 
FossilOrigin-Name: 7fdf26da1d2f40b80f9e44ff6f5af22ace8f95f3
 2014-08-04 18:50:54 +00:00
drh
48dd1d8e28 Change the name of the Index.autoIndex field to Index.idxType and provide 
symbolic names for the various values of that field rather than using
magic numbers.

FossilOrigin-Name: d16e575dacc811de0f7b58a0d1cd243678dce6c5
 2014-05-27 18:18:58 +00:00
drh
5655c549aa Add the VdbeCoverageNeverTaken() macro, and comments that better describe how 
the VDBE branch coverage measurement works.  Add some tags to provide 100%
VDBE branch coverage.

FossilOrigin-Name: c1e94169dd8eb80b4d18c73be9f81585330d11ad
 2014-02-19 19:14:34 +00:00
drh
688852ab15 Add logic to do test coverage measurements on the VDBE code. 
FossilOrigin-Name: ce184c7bb16988641d37c908d9b3042456d4be3d
 2014-02-17 22:40:43 +00:00
drh
57bf4a8eeb Avoid unnecessary calls to applyAffinity() during INSERT and UPDATE 
operations, especially for table that have indices and tables for which
all columns have affinity "NONE".

FossilOrigin-Name: 35b4d6e938164fabaf30b504c54cfd9a69060cee
 2014-02-17 14:59:22 +00:00
drh
693e671936 Fixes for various clang warnings. 
FossilOrigin-Name: 87bf60637e5863c54c5e2d05aaaca0835b7aace8
 2014-01-24 22:58:00 +00:00
drh
eaf4f523a5 Remove a condition that is always in the logic that handles reading 
default values for columns.

FossilOrigin-Name: 895af097e71749f423b63ece17c5a4b4dfcd164d
 2013-12-22 22:45:14 +00:00
drh
edfac3456e Omit an unnecessary OP_Null opcode from UPDATE. 
FossilOrigin-Name: 72d111336c5016e5b5092dfebcd01253266a7685
 2013-12-19 02:56:01 +00:00
drh
9a01c16df8 Remove an unnecessary branch from the UPDATE logic - one that was also 
unreachable except following an OOM on x64.

FossilOrigin-Name: 72f972771457b8c8d9f859238d6a72b43f41d2c3
 2013-12-03 10:14:28 +00:00
drh
5c82f4df9f Avoid seeking on the main data table during the first loop of an UPDATE 
if an index is sufficient to check the WHERE clause.

FossilOrigin-Name: 57158d9daf4d777411fffb1c1d20d89b291d9214
 2013-11-19 02:34:11 +00:00
drh
83d47afe24 Make sure one-pass DELETE for WITHOUT ROWID tables correctly positions the 
PRIMARY KEY cursor.  Make the same fix for UPDATE.

FossilOrigin-Name: 6bd5750b7d5da221b0689f6df6be5ed0dce61bec
 2013-11-17 02:42:02 +00:00
drh
c51331d16d Fix a couple of minor problems with the new delete logic. 
FossilOrigin-Name: a11243f840d35aaed8ee3b9901c3950bc584a417
 2013-11-16 23:16:31 +00:00
drh
6a53499a20 Enhance the DELETE logic so that it can make use of WHERE_ONEPASS_DESIRED 
for rowid tables.

FossilOrigin-Name: 8f479a72758ab6fedb171ada612b1963143c32fa
 2013-11-16 20:13:39 +00:00
drh
4308e348d7 Remove unreachable code, replacing it in most cases with assert() or NEVER() 
macros.

FossilOrigin-Name: 924d63b283a3d059838114c95d42c6feaf913529
 2013-11-11 16:55:52 +00:00
drh
fc8d4f96b4 Performance improvements: 
Avoid unnecessary seeks when doing a single-row UPDATE on a WITHOUT ROWID
table.

FossilOrigin-Name: 6f187a0fb1b09ebc4732c4afbf3c813f82e069f1
 2013-11-08 15:19:46 +00:00
drh
ce60aa469a Optimize out a NotExists/NotFound opcode that occurs in UPDATE processing 
after constraint checks if there is no possiblity that the constraint checking
code might have moved the cursor.

FossilOrigin-Name: 74e3ee2ee6ea89af2c12dd0bce248467fd0f1310
 2013-11-08 01:09:15 +00:00
drh
00f91cf52f Fix a compiler warning introduced by the previous check-in. 
FossilOrigin-Name: 404bd98fb41f71d041932d68a908570995825ec1
 2013-11-07 21:32:16 +00:00
drh
702ba9f2e3 Enable the WHERE_ONEPASS_DESIRED optimization for UPDATE operations on 
WITHOUT ROWID tables.

FossilOrigin-Name: 215307985590c2f3f7aa0d5a0b7799155a506045
 2013-11-07 21:25:13 +00:00
drh
2ec2fb2269 Reference count the KeyInfo object. Cache a copy of an appropriate KeyInfo 
for each index in the Index object, and reuse that one copy as much as possible.

FossilOrigin-Name: defd5205a7cc3543cdd18f906f568e943b8b3a2c
 2013-11-06 19:59:23 +00:00
drh
00012df46d Add the conflict2.test script. Fix issues discovered by this script. 
FossilOrigin-Name: 294ed33756b06375e56c41f1088d42ee48adbdc8
 2013-11-05 01:59:07 +00:00
drh
c3e356fe10 Add another test case file for WITHOUT ROWID and fix the bugs that the new 
test file uncovered.

FossilOrigin-Name: bc2a06eb8e57573d08e77800a7937eee5af3f035
 2013-11-04 18:34:46 +00:00
drh
f8ffb27850 Change the interface to sqlite3GenerateConstraintChecks() for improved lucidity 
and to fix issues in dealing with UPDATEs for WITHOUT ROWID tables.  Make sure
iDataCur and iIdxCur are initialized when processing DELETEs of a VIEW.
UPDATE processing distinguishes between changes to ROWID and PRIMARY KEY.

FossilOrigin-Name: c525ac5630d6bcd51842cfc84f2c2c50be9cec1c
 2013-11-01 17:08:56 +00:00
drh
f82b9afcba Improved VDBE comments on the constraint checker. Fix a missing write 
lock in the UPDATE logic.

FossilOrigin-Name: 3bed599e74d354bf1513e4fb0e8665376ba44d0b
 2013-11-01 14:03:20 +00:00
drh
ccc79f021f Some UPDATE statements now working in WITHOUT ROWID tables. 
FossilOrigin-Name: 5c0eaea6a26b5c3310d96b3c896ac3068a3ebad1
 2013-11-01 12:42:21 +00:00
drh
313619f572 Fix the Synopsis on OP_Concat. Added test_addop_breakpoint() during 
SQLITE_DEBUG.  Enhanced sqlite3VdbeChangeToNoop() to omit the instruction
if it is the most recent added.  Continue to fix problems with UPDATE
and WITHOUT ROWID.

FossilOrigin-Name: 9b6d9e106aaa3c2efb33d234d26cf08cd3c967b9
 2013-10-31 20:34:06 +00:00
drh
77f64bb7b9 Moving UPDATE towards the iDataCur/iIdxCur representation. Still not working 
for WITHOUT ROWID, though.

FossilOrigin-Name: deacbd21b50cc8c63a1572d14a4bbc7af4052d37
 2013-10-31 12:13:37 +00:00
drh
26198bb481 Refactor the INSERT, DELETE, and UPDATE code generators to distinguish between 
the "data cursor" and the "first index cursor", which are no longer consecutive
in the case of a WITHOUT ROWID table.

FossilOrigin-Name: 1adfca6019847d37dee4a297669f29d5ca184066
 2013-10-31 11:15:09 +00:00
drh
6fbe41acf2 Continue working to get UPDATE operational for WITHOUT ROWID tables. 
Fix PRAGMA integrity_check so that it works on WITHOUT ROWID tables.

FossilOrigin-Name: 0d4fea7462c0f61cd1c736cbcd7bea5ec2034d54
 2013-10-30 20:22:55 +00:00
drh
ea22abe3d6 Progress toward getting UPDATE to work in WITHOUT ROWID tables. 
FossilOrigin-Name: e557b7d80f1ede63427a31b16757bf5d8dbfb66d
 2013-10-25 19:17:17 +00:00
drh
bbbdc83b52 The Index object now has nKeyCol and nColumn. nColumn is the total number 
of columns and nKeyCol is the number of key columns.  Currently these always
differ by one.  Refactor aiColumn[] to be of type i16 instead of int.

FossilOrigin-Name: a106ce86cd4afd1f81603826de77df1fb25e9ab5
 2013-10-22 18:01:40 +00:00
dan
8ff2d9561a When preparing an UPDATE statement, avoid generating VDBE code for those foreign key related actions and constraint checks that may be seen to be unnecessary by considering the subset of table columns potentially modified by the UPDATE. 
FossilOrigin-Name: e940b5de49baa1d6a4cf859fbbc0e0df86ac5dbf
 2013-09-05 18:40:29 +00:00