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27 check-ins using file src/pragma.c version de7f3bc6

2012-09-20
15:41
Continuing incremental enhancements of SELECT code generation: Remove the Select.affinity field. Use SelectDest.affSdst instead. (check-in: cf40b7b5 user: drh tags: trunk)
14:26
Refactoring of DISTINCT code. Change the name of the local variable "distinct" to "distinctTab". Generate cleaner code w/o unnecessary P4 and P5 values on the OP_Null for WHERE_DISTINCT_ORDERED. (check-in: 0cda241a user: drh tags: trunk)
2012-09-19
21:15
Tighter VDBE code for the WHERE_DISTINCT_ORDERED case of DISTINCT keyword handling. (check-in: 94b48064 user: drh tags: trunk)
17:31
Add comments to the WHERE_DISTINCT_* macros. No changes to code. (check-in: 82320501 user: drh tags: trunk)
00:35
Merge the covering-index-scan optimization into trunk. (check-in: ddd5d789 user: drh tags: trunk)
2012-09-18
23:21
Silence harmless compiler warning seen with SQLITE_OMIT_DEPRECATED. (check-in: c5cee969 user: mistachkin tags: trunk)
19:29
Enhance IN processing to allow efficient use of indices with numeric affinities. Add test cases for IN processing that would have spotted the error in the [2be661a48023f4] check-in. (check-in: 5ded9b68 user: drh tags: trunk)
17:32
This change generates incorrect code when there are two or more IN operators in the WHERE clause that are both used by the same index. Was: Omit an unnecessary OP_IfNull that immediately follows an OP_Rowid. (Closed-Leaf check-in: 2be661a4 user: drh tags: mistake)
17:08
Enhancements to the comments on sqlite3FindInIndex(). No code changes. (check-in: b1a4c394 user: drh tags: trunk)
14:00
Add the stack_usage.tcl script for analyzing the output of objdump on the amalgamation and estimating the sizes of stack frames on each function. (check-in: 030013ff user: drh tags: trunk)
13:20
Update the vdbe-compress.tcl script so that it accepts variable declarations inside of #ifdef...#endif. This enhancement is needed due to the change of check-in [39866c0ede5d6ef4]. (check-in: e7db056a user: drh tags: trunk)
2012-09-17
21:24
Make sure the WHERE_IDX_ONLY flag is not set on query plans that will not be using an index. (Closed-Leaf check-in: 698b2a28 user: drh tags: fullscan-covering-index)
20:44
Add the ability to disable the covering-index-scan optimization at compile-time, start-time, or at run-time. Add test cases to check this configurability. (check-in: ccb8ecc3 user: drh tags: fullscan-covering-index)
19:26
Merge recent trunk changes into the fullscan-covering-index branch. (check-in: 1c0bf030 user: drh tags: fullscan-covering-index)
19:12
Remove obsolete bits from the bitvector that defines disabled optimizations in the SQLITE_TESTCTRL_OPTIMIZATIONS verb of sqlite3_test_control(). (check-in: 4c21ee2d user: drh tags: trunk)
18:56
Remove an unnecessary parameter from sqlite3Utf8Read() resulting in a slight performance increase. (check-in: 8b962c94 user: drh tags: trunk)
17:16
Make sure the KeyInfo.aSortOrder array is always allocated so that we never have to test for KeyInfo.aSortOrder==0 in performance-critical loops. (check-in: 45793f0b user: drh tags: trunk)
15:36
Performance enhancement in the sqlite3VdbeSerialType() routine. (check-in: ad298f52 user: drh tags: trunk)
2012-09-15
18:45
Attempt to use a covering index even on a full table scan, under the theory that the index will be smaller and require less disk I/O and thus be faster. (check-in: cfaa7bc1 user: drh tags: fullscan-covering-index)
13:39
Make sure the name of rollback journal files are double-zero terminated when they are passed into the VFS. (check-in: 8711a844 user: drh tags: trunk)
13:29
Factor out the code that generates a co-routine for evaluating the SELECT on the RHS of an INSERT statement so that the same code can potentially be reused in other places. (check-in: a93ee09c user: drh tags: trunk)
2012-09-13
19:59
Improved alignment of fields in the Expr object gives an 8-byte size reduction on 64-bit machines. (check-in: 6b252a0d user: drh tags: trunk)
16:12
Fix WAL capability checking in one of the test files. (check-in: 0ebe7cc5 user: mistachkin tags: trunk)
15:26
Fix an unused variable warning with SQLITE_OMIT_WAL. (check-in: 39866c0e user: mistachkin tags: trunk)
15:24
Improved reporting of filename translation errors in the Windows VFS. (check-in: eb0f1c29 user: mistachkin tags: trunk)
14:42
Reduce the size of the Table object by 16 bytes on 64-bit machines, mostly by avoiding intermixing pointer fields with integer fields. (check-in: 1cb9aedf user: drh tags: trunk)
14:22
Change boolean fields in the Column object from unsigned characters into bits in a single bit mask variable. (check-in: 4163f5f1 user: drh tags: trunk)