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50 check-ins occurring around 69a17336fdf4ae89.
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2014-01-04
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| 19:58 | Add the usual "fts3" prefix to new static method setEstimatedRows() in fts3.c. This fixes a problem when compiling the amalgamation, as the r-tree module also contains a static method named setEstimatedRows. (check-in: d6fcfc8890 user: dan tags: trunk) | |
| 19:27 | Avoid redundant register loads during index key generation when doing a DELETE or INTEGRITY_CHECK on a table with multiple indices. (check-in: 8f6e6149a1 user: drh tags: trunk) | |
| 16:49 | Omit OP_Close operations that occur immediately prior to OP_Halt and which cannot be jumped over. (check-in: 874b7e9999 user: drh tags: trunk) | |
| 15:17 | Improvements to the column-cache for nested AND/OR operators. (check-in: 4e725f5313 user: drh tags: trunk) | |
| 14:46 | Have FTS assign extremely high costs to plans that feature unusable MATCH constraints. This discourages the planner from choosing such plans, which lead to "unable to use function MATCH in the requested context" errors. (check-in: fa8be488a3 user: dan tags: trunk) | |
| 14:42 | Instead of having the planner ignore plans with unusable MATCH constraints, have FTS assign extremely high costs to such plans in order to discourage the planner from using them. (Closed-Leaf check-in: 24f84b3813 user: dan tags: avoid-unusable-match) | |
| 14:16 | Have the planner detect cases where a MATCH constraint is applied to a virtual table, and ignore any plans that do not allow the virtual table implementation to implement the MATCH filtering. (check-in: 19f3208b26 user: dan tags: avoid-unusable-match) | |
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2014-01-03
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| 16:03 | Avoid some unnecessary OP_SCopy operations when inserting into a table with multiple indices. (check-in: 429018b19c user: drh tags: trunk) | |
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2014-01-02
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| 21:05 | Try to factor constant subcomponents of the WHERE clause out of the loop. (check-in: 9d05777fe2 user: drh tags: trunk) | |
| 19:35 | Avoid unnecessary affinity transformations when building indices using data from a table. (check-in: 10d851353c user: drh tags: trunk) | |
| 17:57 | Be more aggressive in optimizing constant conditional expressions. (check-in: b7e39851a7 user: drh tags: trunk) | |
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2014-01-01
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| 15:18 | Try to detect process ID changes due to fork() calls in os_unix.c and reset the PRNG when a process ID change is detected. (check-in: e1eba1fb09 user: drh tags: trunk) | |
| 14:00 | Enhance sqlite3_randomness(N,P) such that it resets the internal PRNG if N is less than 1. Subsequent calls to sqlite3_randomness() will reinitialize the internal PRNG by calling the xRandomness() method of the default VFS. (check-in: a221aa82bb user: drh tags: trunk) | |
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2013-12-24
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| 12:09 | Merge the latest trunk changes into the sessions branch. (check-in: cfd110bf5d user: drh tags: sessions) | |
| 12:04 | Add -I. to the main.mk makefile for building sqlite3.o and speedtest1. (check-in: cc72c5aec7 user: drh tags: trunk) | |
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2013-12-23
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| 19:09 | Move elements of the Vdbe object that are only used during statement preparation out into the Parse object. (check-in: c289a253c0 user: drh tags: trunk) | |
| 15:35 | Make sure the WhereLoop.aLTerm[] array is large enough when processing the skip-scan optimization. Fix for ticket [520070ec7fbaac]. (check-in: ac5852d640 user: drh tags: branch-3.8.2) | |
| 11:33 | Remove a stray tab character. (check-in: 25b8a1c9ba user: drh tags: trunk) | |
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2013-12-22
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| 22:45 | Remove a condition that is always in the logic that handles reading default values for columns. (check-in: 895af097e7 user: drh tags: trunk) | |
| 20:44 | Make sure the WhereLoop.aLTerm[] array is large enough when processing the skip-scan optimization. Fix for ticket [520070ec7fbaac]. (check-in: 46d040591f user: drh tags: trunk) | |
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2013-12-21
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| 17:14 | Fix speedtest1.c so that in --explain mode it only outputs non-explain text for DDL statements. (check-in: 2d2b3c4951 user: drh tags: trunk) | |
| 17:07 | Avoid compiler warnings by only enabling sqlite3ErrName() when SQLITE_TEST is defined. (check-in: 862228e505 user: drh tags: trunk) | |
| 16:06 | Fix harmless compiler warnings in FTS4. This involved corrupting Martin Porter's beautifully written and elegant stemmer code, making it a little less beautiful and a little less elegant. Today is a sad day. But the warnings from GCC grow increasingly verbose and irksome with each new release and so something had to be done. (check-in: df05679838 user: drh tags: trunk) | |
| 15:46 | Fix the ".echo on" dot-command of the shell so that it echos comments in addition to SQL statements and dot-commands. Add the --explain option to speedtest1 so that the output can be piped into the command-line shell to show nicely-formated VDBE code for the entire test. (check-in: 96397263f9 user: drh tags: trunk) | |
| 00:04 | Add a case to speedtest1.c that demonstrates the need to factor OP_Column operators out of inner loops. (check-in: 69a17336fd user: drh tags: trunk) | |
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2013-12-20
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| 18:57 | Fix compiler harmless warnings in tclsqlite.c that appeared with GCC 4.8.x. (check-in: d93ae6833a user: drh tags: trunk) | |
| 18:44 | Code simplification in sqlite3GenerateIndexKey() by making use of a subroutine found over in expr.c. (check-in: 0026d33553 user: drh tags: trunk) | |
| 15:59 | Combine adjacent single-register OP_Copy instructions into a single multi-register OP_Copy, where possible. Fix the Synopsis comment for multi-register OP_Copy instructions to show the correct register ranges. (check-in: 2ae22dc0cb user: drh tags: trunk) | |
| 14:48 | Allow any arbitrary expression as the filename in an ATTACH statement, including functions and subqueries. (check-in: df70a1f303 user: drh tags: trunk) | |
| 13:11 | Simplify the accumulator reset for aggregate query processing so that it uses a single multi-register OP_Null rather than a separate OP_Null for each register. (check-in: 2c7fd9b043 user: drh tags: trunk) | |
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2013-12-19
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| 17:04 | Do not inject OOM faults into SQLITE_FCNTL_COMMIT_PHASE_TWO file-control invocations. It causes problems for test scripts. (check-in: 8eb28d23e3 user: dan tags: trunk) | |
| 16:26 | Make sure errors encountered while initializing extensions such as FTS4 get reported out from sqlite3_open(). This fixes a bug introduced by check-in [9d347f547e7ba9]. Also remove lots of forgotten "breakpoint" commands left in test scripts over the years. (check-in: ca3fdfd419 user: drh tags: trunk) | |
| 14:34 | Remove an unneeded column-cache flush in aggregate SELECT and an unreachable branch in the INSERT logic. (check-in: ffa092e13b user: drh tags: trunk) | |
| 02:56 | Omit an unnecessary OP_Null opcode from UPDATE. (check-in: 72d111336c user: drh tags: trunk) | |
| 02:23 | Omit one or more pointless instructions that occur in between OP_NoConflict and OP_Halt. (check-in: 61e2f3575c user: drh tags: trunk) | |
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2013-12-18
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| 18:44 | Remove an unnecessary column-cache flush operation. Add code to trace the column cache when compiled with SQLITE_DEBUG and using PRAGMA vdbe_addoptrace=ON. (check-in: 58704ed1f4 user: drh tags: trunk) | |
| 16:27 | Remove an unnecessary column-cache flush. Add another test case to the speedtest1.c program to accentuate the benefit of not flushing the cache at that point. (Closed-Leaf check-in: 97fdfc6b79 user: drh tags: column-cache-debug) | |
| 15:11 | Show changes to the column cache when PRAGMA vdbe_addoptrace=ON is set. (check-in: 4c6a659c43 user: drh tags: column-cache-debug) | |
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2013-12-17
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| 16:32 | Add evidence marks and additional test cases for the printf() SQL function. (check-in: 93121d3097 user: drh tags: trunk) | |
| 16:10 | Add the printf() SQL function. (check-in: a1bb62f91a user: drh tags: trunk) | |
| 15:58 | Fix the formatting of %c in the printf() SQL function. (Closed-Leaf check-in: 3375571a5e user: drh tags: printf-sql-function) | |
| 15:03 | Add the printf() SQL function. (check-in: 6db7052eee user: drh tags: printf-sql-function) | |
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2013-12-14
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| 18:24 | Merge in all recent preformance enhancements from trunk. (check-in: 32477642d7 user: drh tags: sessions) | |
| 13:44 | Allow the SQLITE_DETERMINISTIC flag to be ORed into the preferred text encoding of application-defined functions, to mark the function as deterministic. (check-in: 5716fc2341 user: drh tags: trunk) | |
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2013-12-13
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| 20:45 | Performance optimizations in the pager_write() routine of pager.c. (check-in: bc5febef92 user: drh tags: trunk) | |
| 19:48 | Reduce the number of calls to the subjRequiresPage() routine inside of pager. (check-in: e50ff39a93 user: drh tags: trunk) | |
| 19:35 | Create and use a new pager interface sqlite3PagerUnrefNotNull() that works just like sqlite3PagerUnref() but guarantees that its argument is not a NULL pointer. (check-in: e00f37e233 user: drh tags: trunk) | |
| 18:50 | Enhance the pcache1PinPage() routine so that it called much less often and runs much faster in the cases when it is actually called. (check-in: a845779cd3 user: drh tags: trunk) | |
| 16:42 | Avoid unnecessary calls to sqlite3_free() from within sqlite3VXPrintf(). (check-in: e2a8b280e8 user: drh tags: trunk) | |
| 16:23 | Simplication and optimization of error message handling. (check-in: 9d347f547e user: drh tags: trunk) | |