d1a01edac9
When one or more arguments to a function are constants, try to factor
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out just those arguments into initialization code.
FossilOrigin-Name: 50d350abbc9176cd6fc606bc45b8fc3020719500
2013-11-21 16:08:52 +00:00
10f468f37a
Remove the obsolete TK_CONST_FUNC token type.
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FossilOrigin-Name: 9b4217f055e9bced186b4c56a5753bd6da7115b5
2013-11-21 14:44:38 +00:00
b1fba2868b
Add the ability to factor constant functions out of inner loops. But do
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not factor out non-constant functions, like random().
FossilOrigin-Name: 1b0f779e19a5c0d51eddd2d88db50034d77d132c
2013-11-21 14:33:48 +00:00
e09f43f8b7
Another improvement to OP_Function and an improvement to OP_Move.
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FossilOrigin-Name: 70b056fb6f60cdfbe24e4b77a1770eef064a73c6
2013-11-21 04:18:31 +00:00
76694c3ae5
A simple change to the OP_Function opcode improves overall performance by
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about 0.5%.
FossilOrigin-Name: b890eefd57fbd189f7df611e82eb1fb4b197e1c3
2013-11-21 03:43:12 +00:00
f93cd949a0
Performance optimization to the OP_Next and OP_Prev opcodes.
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FossilOrigin-Name: ecaac28a2e78aca148fc614fe54bf2706aed8be2
2013-11-21 03:12:25 +00:00
3630a408f2
Refactor the OP_Column opcode to make it clearer and easier to maintain.
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Overall, performance tests show about a 1% speed increase with this change.
FossilOrigin-Name: 972881c6d394c199961f01dcbeb4a6e8b5c919a1
2013-11-21 01:33:45 +00:00
5cc1023e1c
Reduce the size of VdbeCursor again, this time without a performance hit.
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FossilOrigin-Name: 933939932c44bccb0958f203a5bd24e683c1cf38
2013-11-21 01:04:02 +00:00
1fd522ff49
Unpack some fields, adding some space back to the VdbeCursor object,
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in order to help the code to run a little faster.
FossilOrigin-Name: f8d5efcd7b92492b833b6cd1cb6bec006c6a0809
2013-11-21 00:10:35 +00:00
14da87f8c5
Reduce the size of the VdbeCursor object from 144 to 120 bytes.
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FossilOrigin-Name: 5f9d50688508affd0bc8e4d52e21dacfacdbb5ce
2013-11-20 21:51:33 +00:00
380d685133
Improved comments on the OP_Column changes. Optimize out loading of overflow
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pages for content with zero length. Add test cases for the latter.
FossilOrigin-Name: 0e05679db7aa302a49e087a81f85203844b98cbe
2013-11-20 20:58:00 +00:00
c8606e416a
Further performance tweaks to OP_Column.
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FossilOrigin-Name: 0e3f5df695216a27602a53eed5d25231b055adc8
2013-11-20 19:28:03 +00:00
399af1d2c2
Refactoring the OP_Column opcode for improved performance and
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maintainability.
FossilOrigin-Name: 7c914e3997d2b28164a2fa7eb4398262b6ddb4b2
2013-11-20 17:25:55 +00:00
79353dbd5f
Simplifications to the VdbeCursor object.
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FossilOrigin-Name: 5562cd343d8f69242e06a51a7f1aef7ee7d78eec
2013-11-20 02:53:58 +00:00
83b301b0af
Performance improvement for the OP_MustBeInt opcode in the VDBE.
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FossilOrigin-Name: 96a65388e75fed96e2e73ef65726f6db88cc5ccd
2013-11-20 00:59:02 +00:00
707f1c560a
Fix a harmless MSVC compiler warning.
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FossilOrigin-Name: 6cc023bb29be51847fbbfab95c24fc89993ccdba
2013-11-19 18:17:20 +00:00
c138dafe88
Minor performance improvement to sqlite3SerialTypeGet().
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FossilOrigin-Name: 17e8524fc05aa1e6074c19a8ccccc5ab5883103a
2013-11-19 13:55:34 +00:00
6bc69a2d4b
Change Noop-comments in where.c into Module-comments, so that they are
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omitting without SQLITE_ENABLE_MODULE_COMMENTS.
FossilOrigin-Name: 3e577f40183c56e60866d8382b044688a1b77eaf
2013-11-19 12:33:23 +00:00
5c82f4df9f
Avoid seeking on the main data table during the first loop of an UPDATE
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if an index is sufficient to check the WHERE clause.
FossilOrigin-Name: 57158d9daf4d777411fffb1c1d20d89b291d9214
2013-11-19 02:34:11 +00:00
f37139f65b
Fix an requirement mark in a test script so that it matches the
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typo-corrected requirement. No changes to code.
FossilOrigin-Name: 072412d5e3f92c9c6548f5c86d396d3f024df3f7
2013-11-19 00:31:25 +00:00
64ff26f741
Add comments identifing where the skip-scan option is decided in the
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query planner, to aid in tuning that decision. No changes to code.
FossilOrigin-Name: e9df04cec48bb8b4ea26ec9024a22ea42b2338eb
2013-11-18 19:32:15 +00:00
2365bac1e2
Fix documentation typos. No changes to code.
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FossilOrigin-Name: 7caeb09c52bde4649b02b339f611c8e30f6d1c68
2013-11-18 18:48:50 +00:00
2bea7cde6e
Fix harmless compiler warnings from clang scan-build.
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FossilOrigin-Name: 8d002740bffca2a76d2dfbc1a67293d34f9de9ba
2013-11-18 11:20:50 +00:00
c4650bb33d
Fix a problem with the shell tool EXPLAIN indentation code and VDBE sub-programs.
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FossilOrigin-Name: 9c8d6856253f8da06b2cb5dc6bd89b6952fa03ed
2013-11-18 08:41:06 +00:00
e73e067187
Enable the ONEPASS optimization for DELETE, for both rowid and WITHOUT
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ROWID tables.
FossilOrigin-Name: 44a07afdd9b3ae2460bc963383295deb0915f899
2013-11-18 03:11:54 +00:00
83d47afe24
Make sure one-pass DELETE for WITHOUT ROWID tables correctly positions the
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PRIMARY KEY cursor. Make the same fix for UPDATE.
FossilOrigin-Name: 6bd5750b7d5da221b0689f6df6be5ed0dce61bec
2013-11-17 02:42:02 +00:00
c51331d16d
Fix a couple of minor problems with the new delete logic.
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FossilOrigin-Name: a11243f840d35aaed8ee3b9901c3950bc584a417
2013-11-16 23:16:31 +00:00
52a82e6966
Fix an OOM-recovery problem in the DELETE code generator.
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FossilOrigin-Name: dc7be158b82ab9156d0fcdf3394f881eac4d23c3
2013-11-16 23:03:06 +00:00
9612947260
Combine the rowid and WITHOUT ROWID paths for DELETE into a single path.
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FossilOrigin-Name: c4734b881a64a9d21d03a14e901785797577fbd8
2013-11-16 22:48:52 +00:00
156c7919d9
The one-pass optimization is now working for DELETE on WITHOUT ROWID tables.
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FossilOrigin-Name: e4d220a381388f900a95d1b656a82f14c837f92e
2013-11-16 20:45:01 +00:00
6a53499a20
Enhance the DELETE logic so that it can make use of WHERE_ONEPASS_DESIRED
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for rowid tables.
FossilOrigin-Name: 8f479a72758ab6fedb171ada612b1963143c32fa
2013-11-16 20:13:39 +00:00
aedfc5078a
Fully constraint the ORDER BY on the top-10 line of the --summary output
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from the wordcount test program. Add the run-wordcount.bash script for
running wordcount in various configurations.
FossilOrigin-Name: 7edf39eb93a8f9059a788f5fccf41c2be40afd4d
2013-11-16 15:35:18 +00:00
64bbbf3383
Avoid unnecessary OP_IfNull checks when doing a range query where there
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is a constraint on the lower bound of the range.
FossilOrigin-Name: de08a7e7abbad9b94d0268d096ef4555d31c8b0c
2013-11-16 14:03:53 +00:00
e6d058cd97
Simplification and performance improvement to the logic that factors
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constant expressions ouf of inner loops.
FossilOrigin-Name: ee9353fdf3c8f19cd3c344ea8fb7c6d13cadd632
2013-11-16 13:55:34 +00:00
143867516b
Fix testcase misc7-16 so that it works with the new UNIQUE constraint error
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message format.
FossilOrigin-Name: c7f2ed9f44be3b66a542ee42c0db63bab8ffd2db
2013-11-16 12:56:46 +00:00
85f8aa7907
Add ALWAYS and NEVER macros to currently unreachable but important branches in
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sqlite3ExprCompare().
FossilOrigin-Name: cee835fe902e46f283257fb8ec9d9744c7d6dd77
2013-11-15 20:06:26 +00:00
8e2ea000b5
Merge the operator comment fixes from trunk.
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FossilOrigin-Name: 9f14f55c8ab77e73dbffb7a9c99422bef14cc17a
2013-11-15 19:00:20 +00:00
40864a1401
Fix comments on the OP_Divide and OP_Remainder operators, especially the
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"Synopsis:" comment, so that they agree with the actual implementation.
FossilOrigin-Name: cc17f1f05f15e9c62659a49c0656ff2b667bf701
2013-11-15 18:58:37 +00:00
c2acc4e466
Changes to make the new constant expression factoring logic more general
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and more testable.
FossilOrigin-Name: d10fb49a92f5f6e93093ae83544e5aec7984361a
2013-11-15 18:15:19 +00:00
a0d6e3a501
Add test cases for INSERT INTO ... DEFAULT VALUES on tables with numeric
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constants in CHECK constraints.
FossilOrigin-Name: 79ec485b548fcfc508c4d5fa32ed0604e1b0c5d9
2013-11-15 16:48:23 +00:00
10d1edf0b6
Improvements to the Expr comparison routine to make it more general.
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Improvements to unary-minus code generation so that it can make use of
a global constant register with a zero value.
FossilOrigin-Name: 835be656bb0e83c8108104869166aa9dd850d265
2013-11-15 15:52:39 +00:00
776f3a2fa9
Add the --query option to the wordcount test program.
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FossilOrigin-Name: 5960d11eba4fc6ca136331279689424d03bd6e76
2013-11-15 13:12:30 +00:00
33cad2fb46
Simplify the range scan code generate while also avoiding an unnecessary
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OP_Affinity opcode.
FossilOrigin-Name: 372686bfbb1da08b04bddb085e30da5dbc8b30d8
2013-11-15 12:41:01 +00:00
7c89bed621
Merge EXPLAIN fixes from trunk.
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FossilOrigin-Name: cd579727b107a07140b94f5839d193959d29e6db
2013-11-15 03:30:07 +00:00
72dbffd726
Fix a typo in the "synopsis" for the OP_Lt opcode that causes an
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incorrect comment to be added to EXPLAIN output.
FossilOrigin-Name: d99a30a25d6102c389f1fb5ec389c137168615e9
2013-11-15 03:21:43 +00:00
602320e326
Another adjustment to the EXPLAIN indentation logic, in order to deal with
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the sorter loop on a CREATE INDEX statement.
FossilOrigin-Name: cbe85cc2a991d89a6cca391ffa1be0582a684e49
2013-11-15 03:16:34 +00:00
f30a969b80
Rework the logic that factors constant expressions out of inner loops, making
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it both simpler and faster.
FossilOrigin-Name: 8dc5c76c766828d7c28090bec30ff48227e7b140
2013-11-15 01:10:18 +00:00
01752bc805
Adjust the command-line shell EXPLAIN indentation logic to handle the
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second loop of an UPDATE that reads out a RowSet.
FossilOrigin-Name: ea141a9b87dbb5fa1402bf7f6e36e89cc9de3cb3
2013-11-14 23:59:33 +00:00
052e6a8a07
Remove an unused local variable.
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FossilOrigin-Name: 10d59226382adcb8016fc2d927e5a0c0b36f3980
2013-11-14 19:34:10 +00:00
400fcbad71
Simplification to the progress callback check. On branch removed.
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FossilOrigin-Name: 24ef16548eebcdb9d8b40308f6a16dabf8f8d474
2013-11-14 00:09:48 +00:00
drh