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Overview
| Comment: | Merge comment typo fixes from trunk. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | rowvalue |
| Files: | files | file ages | folders |
| SHA1: |
728c5aa436a5f55c86b019c415a2b71d |
| User & Date: | mistachkin 2016-07-10 19:35:45 |
Context
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2016-07-13
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| 19:48 | Modifications towards better vector IN(...) support on this branch. Not activated yet. check-in: 34e35c71 user: dan tags: rowvalue | |
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2016-07-10
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| 19:35 | Merge comment typo fixes from trunk. check-in: 728c5aa4 user: mistachkin tags: rowvalue | |
| 19:35 | Fix typos in comments. No changes to code. check-in: 77c692a6 user: mistachkin tags: trunk | |
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2016-07-09
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| 20:23 | Add some support for using row value constructors in certain parts of SQL expressions. There are many bugs on this branch. check-in: b2204215 user: dan tags: rowvalue | |
Changes
Changes to src/wherecode.c.
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** set P3 and P5 on the OP_String opcode so that the string will be cast ** to a BLOB at appropriate times. ** ** The LIKE optimization trys to evaluate "x LIKE 'abc%'" as a range ** expression: "x>='ABC' AND x<'abd'". But this requires that the range ** scan loop run twice, once for strings and a second time for BLOBs. ** The OP_String opcodes on the second pass convert the upper and lower ** bound string contants to blobs. This routine makes the necessary changes ** to the OP_String opcodes for that to happen. ** ** Except, of course, if SQLITE_LIKE_DOESNT_MATCH_BLOBS is defined, then ** only the one pass through the string space is required, so this routine ** becomes a no-op. */ static void whereLikeOptimizationStringFixup( |
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565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 |
** set P3 and P5 on the OP_String opcode so that the string will be cast
** to a BLOB at appropriate times.
**
** The LIKE optimization trys to evaluate "x LIKE 'abc%'" as a range
** expression: "x>='ABC' AND x<'abd'". But this requires that the range
** scan loop run twice, once for strings and a second time for BLOBs.
** The OP_String opcodes on the second pass convert the upper and lower
** bound string constants to blobs. This routine makes the necessary changes
** to the OP_String opcodes for that to happen.
**
** Except, of course, if SQLITE_LIKE_DOESNT_MATCH_BLOBS is defined, then
** only the one pass through the string space is required, so this routine
** becomes a no-op.
*/
static void whereLikeOptimizationStringFixup(
|