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36 check-ins using file src/where.c version 5f91be9f
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2016-10-03
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| 12:56 | Fix an obsolete comment on a variable definition in expr.c. No code changes. (check-in: 012ff6dd user: drh tags: trunk) | |
| 02:59 | Make sure the sqlite_sequence table is updated when an optional xfer optimization is used. Fix for ticket [7b3328086a5c1]. (check-in: 81e4d4f8 user: drh tags: trunk) | |
| 01:21 | Allocate Parse objects off of the stack where appropriate for a substantial performance increase and a size reduction. (check-in: ea8affa9 user: drh tags: trunk) | |
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2016-10-01
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| 23:55 | Add SQLITE_USE_ALLOCA to the --lean configuration in speed-check.sh. (check-in: fe07609e user: drh tags: trunk) | |
| 21:43 | Rearrange fields in the Parse object to reduce the amount of initialization required. (check-in: 361940b4 user: drh tags: trunk) | |
| 20:43 | Reduce the width of a memset() to avoid double-initializing some variables. (check-in: 34edbfd1 user: drh tags: trunk) | |
| 19:32 | Remove an unnecessary memset() call. (check-in: a76bff74 user: drh tags: trunk) | |
| 19:21 | Use sqlite3DbMallocRawNN() where appropriate, instead of sqlite3DbMallocRaw(). (check-in: 54a449a4 user: drh tags: trunk) | |
| 16:53 | Make sure deleting an unused prepared statement does not reference uninitialized fields in the structure. (check-in: 7983eef0 user: drh tags: trunk) | |
| 11:39 | Avoid accessing Vdbe.pc if it is uninitialized. Check Vdbe.magic first. (check-in: 6ac6e446 user: drh tags: trunk) | |
| 00:37 | Avoid unnecessary zeroing of fields in the Vdbe object when it is allocated. (check-in: 1e21bbe8 user: drh tags: trunk) | |
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2016-09-30
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| 22:24 | Avoid initializing the column-cache section of the Parse object, since entries in the cache will be initialized as they are used, and avoiding the initial memset() saves many CPU cycles. (check-in: 63cf7eaf user: drh tags: trunk) | |
| 21:20 | Fix an always-true conditional left over from the previous commit. (check-in: ab12fce3 user: drh tags: trunk) | |
| 20:22 | Fix the Parse.aColCache column cache so that all of the valid entries are in the first Parse.nColCache slots. (check-in: 60285020 user: drh tags: trunk) | |
| 19:14 | Another simplification to the Parse object. (check-in: c1419727 user: drh tags: trunk) | |
| 18:35 | Remove unnecessary fields from the Parse object. (check-in: 814e41da user: drh tags: trunk) | |
| 17:46 | Avoid unnecessary Mem initializations when generating a new sqlite3_stmt object. (check-in: 47ae1cda user: drh tags: trunk) | |
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2016-09-29
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| 20:28 | Small size and performance optimization to sqlite3VdbeChangeP5(). (check-in: 3c93c8f5 user: drh tags: trunk) | |
| 19:50 | Remove the peep-hole optimization of removing OP_Close opcodes that come before OP_Halt, as the extra work of removing those opcodes uses more cycles than just running them. (check-in: 984a96d7 user: drh tags: trunk) | |
| 19:27 | Size and performance optimization to sqlite3ValueFromExpr() (check-in: 945f82bc user: drh tags: trunk) | |
| 15:53 | Clarification and typo-fixes in comments. No changes to code. (check-in: e2cd79aa user: drh tags: trunk) | |
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2016-09-28
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| 20:42 | Use Knuth multiplicative hashing for the symbol table. (check-in: cc29ddd6 user: drh tags: trunk) | |
| 16:15 | Merge recent enhancements from trunk. (check-in: 06014163 user: drh tags: apple-osx) | |
| 16:05 | Two more typo fixes in comments. (check-in: 40c0fb0a user: drh tags: trunk) | |
| 16:04 | Fix typos in comments. No code changes. (check-in: 5bbd071d user: drh tags: trunk) | |
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2016-09-27
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| 00:09 | Update requirements marks due to improvements in the wording of documentation. No changes to code. (check-in: bf903b2e user: drh tags: trunk) | |
| 00:03 | Fix FTS3 test cases due to the flattener change of the previous check-in. (check-in: 0c8b9b21 user: drh tags: trunk) | |
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2016-09-26
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| 14:39 | When flattening a query of the form "SELECT * FROM (SELECT * FROM tbl WHERE x=?) WHERE y=?", ensure that the final WHERE clause is "x=? AND y=?" instead of "y=? AND x=?". Although it is still not guaranteed, this makes the order in which WHERE clause terms are processed comport more closely to users expectations. (check-in: cf7f9e6d user: dan tags: trunk) | |
| 12:38 | Inline the relevent parts of sqlite3ExprAlloc() into spanExpr(), for a performance improvement. (check-in: fe89225e user: drh tags: trunk) | |
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2016-09-24
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| 17:42 | Omit the LikeOp object from the parser. Change more sqlite3PExpr() calls into sqlite3ExprAlloc() calls. (check-in: 795454a3 user: drh tags: trunk) | |
| 01:41 | Add -DSQLITE_MAX_EXPR_DEPTH=0 to the --lean option on speed-check.sh. (check-in: a8cb1390 user: drh tags: trunk) | |
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2016-09-23
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| 21:36 | Add the EP_Leaf flag bit to the Expr.flags field to indicate Expr nodes that do not have substructure. Use that bit to avoid unnecessary recursion. (check-in: 8a6ea455 user: drh tags: trunk) | |
| 20:59 | Use sqlite3ExprAlloc() instead of sqlite3PExpr() for leaf nodes in the expression tree, where appropriate. This is both smaller and faster. (check-in: afac0709 user: drh tags: trunk) | |
| 18:13 | New test case for the ORDER BY LIMIT optimization. (check-in: 9a5a489d user: drh tags: trunk) | |
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2016-09-22
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| 21:37 | Fix a potential null-pointer dereference and crash in the case where one thread is calling sqlite3_column_text() and another thread is calling sqlite3_step() on the same prepared statement at the same instant. (check-in: ee1382a3 user: drh tags: trunk) | |
| 18:53 | Remove the internal sqlite3CodeOnce() interface, replacing it with a direct call to sqlite3VdbeAddOp0(v,OP_Once). Slightly smaller and faster. (check-in: c3774c6a user: drh tags: trunk) | |