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383 Commits

Author SHA1 Message Date
drh
27964431ea Merge in trunk changes. 
FossilOrigin-Name: a2914d6b17358de05eb39f764c0c13d2d4cf8f3b
 2013-12-03 20:51:33 +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
1b2ee4fe1a Merge in performance enhancements from trunk. 
FossilOrigin-Name: fc9ae839569eb28eb734c52d95676c59b2e27494
 2013-11-26 18:00:29 +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
cbf1b8ef7d Merge in the WITHOUT ROWID changes. A few tests are failing now. They will 
be fixed in a follow-on check-in.

FossilOrigin-Name: 5addd1234ded59ce60fb633b76ac87d483377edd
 2013-11-11 22:55:26 +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
drh
a63b852992 Synchronize with the trunk. 
FossilOrigin-Name: 136445ba020c9475d3f5a7843d7d0add98477138
 2013-10-10 20:13:18 +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
drh
5f9742e0ff Merge from trunk: (1) Recent bug fixes (2) STAT4 support (3) win32-longpath 
support.

FossilOrigin-Name: e7ebc8f74fe91dee26f952fdf49e427b45448667
 2013-08-29 15:08:38 +00:00
dan
7a4192358a When possible, use the multi-column samples in sqlite_stat4 to estimate the number of index rows scanned by a query plan. 
FossilOrigin-Name: 2973f5ca736c4a6f13c653d54b6a29d7cae8d0ed
 2013-08-06 20:01:43 +00:00
drh
7fb30bd0dd Merge in the latest trunk changes, including partial indexes, the MAX_PATH 
fix in os_win.c, and the sqlite3_cancel_auto_extension() API.

FossilOrigin-Name: 7e1acb390770d1bd189fac7a3a7f96106f96e3a4
 2013-08-02 20:44:48 +00:00
drh
b2b9d3d758 Add the logic to keep partial indices up to date through DML statements and 
when new partial indices are created.  This new logic is untested except to
verify that it does not interfere with full indices.

FossilOrigin-Name: fb9044d15ad4fd6ae4a38858c0c0e6fe9d4faa25
 2013-08-01 01:14:43 +00:00
drh
fd64cedc4b Bring the sessions branch up-to-date with all the latest trunk changes. 
FossilOrigin-Name: 086a127236ee99d67513490fb7b5549e8b752c44
 2013-06-26 13:31:50 +00:00
drh
6f32848d61 Move the definitions of the WhereLevel and WhereInfo objects out of 
sqliteInt.h and into where.c.  This will facilitate future refactoring
of the internal query planner data structures.

FossilOrigin-Name: 1574653b9b4522b489d4c62d9cf70166bb3bddfd
 2013-06-05 23:39:34 +00:00
drh
2464dee6bc Merge all recent trunk changes into the sessions branch. 
FossilOrigin-Name: ae6c4a0906ad8caabd8c605bb39c5fb979ab39a2
 2013-05-08 18:50:04 +00:00
drh
2722898c6c Make sure the authorizer callback gets a valid pointer to "ROWID" for the 
column-name parameter when doing an UPDATE that changes the rowid.
Fix for ticket [0eb70d77cb05bb2272].

FossilOrigin-Name: 26a59bb88d4082758eb281b365b57f9a0c059d89
 2013-05-06 13:22:50 +00:00
drh
8dd661aad1 Merge the changes for the 3.7.16.1 release candidate into the sessions branch. 
FossilOrigin-Name: ee35a89712b8ea9f4e70d61a29150348896b519f
 2013-03-28 01:19:26 +00:00
mistachkin
48864df97d Many spelling fixes in comments. No changes to code. 
FossilOrigin-Name: 6f6e2d50941e444ebc83604daddcc034137a05b7
 2013-03-21 21:20:32 +00:00
drh
310874ca00 Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: aa62d6881b5aae64e15dbae70ce8e77bcc2a9f0b
 2012-08-25 01:21:36 +00:00
dan
0efb72c969 Fix a problem to do with multi-or queries and automatic indexes. 
FossilOrigin-Name: a3e26038a1d9f3331239f777c67d1920d904aab0
 2012-08-24 18:44:56 +00:00
drh
54cced185c Merge all of the latest trunk changes into the sessions branch. 
FossilOrigin-Name: a9bcb432f58b96f079a73c456efd4851c582221e
 2012-01-05 13:02:36 +00:00
drh
b8475df809 Make no assumptions about the initial state of VDBE registers. 
FossilOrigin-Name: 521d72bdf67b4b1972331307345a18c231a6e1d6
 2011-12-09 16:21:19 +00:00
drh
efb1ca3738 Merge the latest trunk enhancements into the sessions branch. 
FossilOrigin-Name: 8baef58170ff851d0c4387a6888f59b487b4f33c
 2011-10-21 17:08:23 +00:00
drh
b07028f71c Add assert() statements and eliminate needless variable assignments in order 
to get the clang scan-build utility to report zero problems against the
SQLite core.  Clang's static analysis did find one real problem - but it was
in the command-line shell, not in the SQLite core.

FossilOrigin-Name: 60fee9574b0125705787e33c16f116cf188c8323
 2011-10-14 21:49:18 +00:00
drh
8a3bb3fddd Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: 110cfd6920cf3011aeaf7e586f8db867bfc69fbb
 2011-07-22 12:49:27 +00:00
dan
38cc40c216 Experimental changes to improve optimization of DISTINCT queries. 
FossilOrigin-Name: f7ba0219ef2f235543c258be736955d91ca5ecce
 2011-06-30 20:17:15 +00:00
drh
8863f35f5c Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: 4c5e276c902e0b93cfc05bf2e1db966ecdac0ed0
 2011-06-20 10:44:10 +00:00
dan
7006c18e00 When updating a field that requires foreign key constraints be checked, ensure that the indexes and tables are consistent when the FK logic is run. Otherwise, it may detect the inconsistency and report database corruption. 
FossilOrigin-Name: 2b3d9996a829c62fbaf7c92d50e44636340b07c6
 2011-06-10 18:33:35 +00:00
drh
0576a30dad Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: 6883580e6c8973010a42d1d2c5bde04c6b2f4eb7
 2011-05-05 15:46:16 +00:00
dan
b061d058cb Add support for on conflict clauses to fts3/fts4. 
FossilOrigin-Name: 6d2633a6d0a9bb88fb1a6adac0827dc51df2d4d2
 2011-04-25 18:49:57 +00:00
drh
9b1c62d416 Add the SQLITE_ENABLE_PREUPDATE_HOOK compile-time option. 
FossilOrigin-Name: 6634521461e6acff7cc778590e62d57831f9230d
 2011-03-30 21:04:43 +00:00