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73 events for the month beginning 2014-01-01 by user drh
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2014-01-31
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| 11:50 | Update the "sqlite3.1" unix manpage document. (check-in: 21ce9e3a user: drh tags: trunk) | |
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2014-01-30
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| 17:47 | Update evidence marks on SELECT tests. Comment changes only. No changes to code or tests. (check-in: 1973d80e user: drh tags: trunk) | |
| 15:03 | Fix requirements marks only. No changes to code or tests. (check-in: 4a34378b user: drh tags: trunk) | |
| 14:10 | Update a requirement mark and add some additional test cases to cover the requirement associated with ORDER BY and LIMIT on compound SELECT statements. (check-in: 8560091e user: drh tags: trunk) | |
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2014-01-29
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| 01:46 | Make sure that sqlite3SelectDup() initializes the nSelectRow of the duplicate Select object. (check-in: 5bb29b82 user: drh tags: trunk) | |
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2014-01-28
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| 20:36 | Fix harmless compiler warnings in the showdb utility program. (check-in: 27c27daa user: drh tags: trunk) | |
| 18:53 | Fix a potential over-size and hence undefined shift operation. (check-in: 6379b072 user: drh tags: trunk) | |
| 18:06 | Bring in the latest updates from trunk. (check-in: 7b5f3773 user: drh tags: sessions) | |
| 00:49 | Provide hints to the btree layer Next and Previous primitives to let them know if they can be no-ops if the underlying index is unique. (Leaf check-in: a2c347fa user: drh tags: branch-3.8.2) | |
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2014-01-27
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| 15:02 | Update some requirements marks to conform with improvements in the documentation. (check-in: be1acb61 user: drh tags: trunk) | |
| 13:58 | Fix (harmless) duplicate variable declaration. (check-in: 94ed9bc4 user: drh tags: trunk) | |
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2014-01-24
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| 22:58 | Fixes for various clang warnings. (check-in: 87bf6063 user: drh tags: trunk) | |
| 16:36 | Use an unsigned integer to accumulate the string hash. Avoids compiler warnings. (check-in: b1824344 user: drh tags: trunk) | |
| 15:42 | Add a few more CTE test cases to closure.test. (check-in: 1b6405d9 user: drh tags: trunk) | |
| 14:37 | Add test cases that compare the performance of the transitive_closure virtual table again common table expressions for walking a tree. (check-in: 9a23f020 user: drh tags: trunk) | |
| 14:05 | Bring in all the latest trunk changes, including the Common Table Expressions implementation. (check-in: 9b43e559 user: drh tags: sessions) | |
| 11:16 | Add test cases showing the use of ORDER BY on a recursive query to control depth-first versus breath-first search of a tree. (check-in: 83b0b291 user: drh tags: trunk) | |
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2014-01-22
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| 18:31 | Fix harmless compiler warnings. (check-in: dea2ca6a user: drh tags: trunk) | |
| 18:16 | Change the WITH RECURSIVE implementation to use a queue instead of a pair of tables. Add support for ORDER BY, LIMIT, and OFFSET on recursive queries. (check-in: b6cea420 user: drh tags: trunk) | |
| 18:10 | • Edit [c57deced09c67085|c57deced]: Mark "Closed". (artifact: 99c2885e user: drh) | |
| 18:07 | Add support for LIMIT and OFFSET in a recursive query. (Closed-Leaf check-in: 1945484e user: drh tags: cte-via-queue) | |
| 17:28 | Get ORDER BY working for recursive queries. (check-in: 37b343b0 user: drh tags: cte-via-queue) | |
| 13:35 | Add new SelectDest codes, SRT_Queue and SRT_DistQueue in anticipation of adding ORDER BY support on recursive queries. Factor out the recursive query code generator into a separate procedure. (check-in: 3eb5f9f8 user: drh tags: cte-via-queue) | |
| 00:23 | Remove an unnecessary parameter from selectInnerLoop(). Clean up comments. (check-in: 5e6c4a55 user: drh tags: cte-via-queue) | |
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2014-01-21
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| 22:25 | Change the recursive common table expression algorithm to use a queue instead of a pair of tables. Runs about 25% faster on the sudoku solver query. The OP_SwapCursors opcode is no longer required. The current implementation uses just a fifo, but the plan is to change it into a queue that will support ORDER BY and LIMIT in a recursive query. (check-in: b2671e11 user: drh tags: cte-via-queue) | |
| 14:56 | • Edit [cc1cb3217800ff66|cc1cb321]: Move to branch level-pseudocolumn. (artifact: 896de8fc user: drh) | |
| 00:19 | Add support for the LEVEL pseudo-column in the recursive part of a common table expression. LEVEL has the value of 1 on the first iteration and successively larger integer values of subsequent iterations. It cannot have a table qualifier. Actual columns named "level" can still be accessed by including the table name qualifier. (check-in: cc1cb321 user: drh tags: level-pseudocolumn) | |
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2014-01-20
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| 21:14 | • Edit [7d9e22187daaa316|7d9e2218]: Edit check-in comment. (artifact: df9a6acd user: drh) | |
| 19:15 | • New ticket [1a1a194d] Assertion fault on query of virtual table with cross-column constraints. (artifact: ce84c752 user: drh) | |
| 14:58 | Remove an unused #define and add an assert(), both associated with WITH logic. (check-in: a06235e0 user: drh tags: trunk) | |
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2014-01-18
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| 18:33 | Add a sudoku solver to the recursive query tests in with1.test. (check-in: 679eff87 user: drh tags: trunk) | |
| 15:22 | Add asserts() for a couple of unreachable conditions. Add the Mandelbrot Set query as a test case. (check-in: 2ad4583c user: drh tags: trunk) | |
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2014-01-17
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| 18:34 | Minor simplification of error message text for a couple of errors associated with WITH clause processing. (check-in: 2031004d user: drh tags: trunk) | |
| 16:19 | Add tests that verify that keywords WITH, WITHOUT, and RECURSIVE can still be used as table and column names. (check-in: 9ca18a01 user: drh tags: trunk) | |
| 16:04 | • Edit [6a549187ed8b5ed5|6a549187]: Mark "Closed". (artifact: 245e6420 user: drh) | |
| 15:27 | Fix a compiler warning in selectPopWith(). (check-in: c8eb1163 user: drh tags: trunk) | |
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2014-01-16
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| 22:40 | Add the ability for the authorizer callback to disallow recursive queries. (check-in: 9efc120a user: drh tags: common-table-expr) | |
| 21:59 | Tweaks to error message text. (check-in: 090a77d9 user: drh tags: common-table-expr) | |
| 15:31 | Always use available indices to optimize LIKE operators even if the pattern of the LIKE operator has a COLLATE modifier. This fixes an ineffiency that was introduced into 3.7.15 by check-in [8542e6180d4] on 2012-12-08. (check-in: 16bd5478 user: drh tags: trunk) | |
| 04:37 | Merge trunk changes. Fix a possible NULL-pointer deference in WITH clause name resolution. (check-in: 7f953b56 user: drh tags: common-table-expr) | |
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2014-01-15
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| 20:10 | Remove an ALWAYS() that is no longer always true. (check-in: c95823cd user: drh tags: common-table-expr) | |
| 18:35 | Further comments on WITH-clause processing routines in select.c. (check-in: c948384d user: drh tags: common-table-expr) | |
| 18:23 | Add a header comment to the searchWith() routine. (check-in: d9ae0f5d user: drh tags: common-table-expr) | |
| 14:40 | Don't try to verify the schema of transient table (such as generated inside a WITH clause) when generating code for "IN table" operators. (check-in: 860aa936 user: drh tags: common-table-expr) | |
| 02:40 | Use the user-supplied table name in WITH RECURSIVE tables as the internal name of the table and the name of the table in VDBE comments. (check-in: a2933023 user: drh tags: common-table-expr) | |
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2014-01-13
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| 20:38 | In the command-line shell, defend against a NULL-pointer dereference in the case where sqlite3_column_name() returns NULL (as might happen following an OOM error). (check-in: ac15455a user: drh tags: trunk) | |
| 20:32 | For statements of just an unadorned VALUES clause, assign column names as "columnN" for increasing whole numbers N. (check-in: 260587d2 user: drh tags: trunk) | |
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2014-01-11
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| 13:22 | Parse common table expressions. But do not do anything with them (yet). (check-in: da98b720 user: drh tags: common-table-expr) | |
| 12:52 | In LEMON, limit the size of the grammar file to 100MB. This ensures that the program will never experience integer overflow. To be doubly sure, use calloc() instead of malloc() when allocating arrays. (check-in: 29ba458d user: drh tags: trunk) | |
| 03:57 | • Edit [4e4483b2d4908e18|4e4483b2]: Mark "Closed". (artifact: 9e50e1e8 user: drh) | |
| 03:54 | Optimizations to the SQL language grammar that result in a small size reduction and speed increase. (check-in: cb5d1f83 user: drh tags: trunk) | |
| 03:27 | Add the "%token_class" directive to the LEMON parser generator. This opens up the possibility of simplifying the parser. Also remove all calls to sprintf(), strcpy(), and strcat() from LEMON to avoid compiler warnings on OpenBSD. (Aside: It is this change to avoid harmless compiler warnings that was the cause of the reason spat of bugs.) (check-in: 8eb48c04 user: drh tags: trunk) | |
| 03:16 | • Edit [4e4483b2d4908e18|4e4483b2]: Move to branch buggy-lemon. (artifact: 46703d83 user: drh) | |
| 03:13 | Add the "%token_class" directive to the LEMON parser generator. This opens up the possibility of simplifying the parser. Also remove all calls to sprintf(), strcpy(), and strcat() from LEMON to avoid compiler warnings on OpenBSD. (Closed-Leaf check-in: 4e4483b2 user: drh tags: buggy-lemon) | |
| 03:06 | In LEMON, fix a bug in the text formatter introduced by the previous commit. Also add the new "%token_class" directive for defining symbolic names that stand any one of a collection of tokens. (Closed-Leaf check-in: da7890ca user: drh tags: lemon-updates) | |
| 02:22 | • Edit [e43c522dde01e134|e43c522d]: Move to branch lemon-updates. (artifact: 934291cc user: drh) | |
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2014-01-10
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| 23:21 | Do not use sprintf(), strcpy() or strcat() in the implementation of the lemon parser generator tool, to avoid compiler warnings in OpenBSD. (check-in: e43c522d user: drh tags: lemon-updates) | |
| 20:51 | Remove unused structure definition from parse.y. (check-in: 7f1e7ae3 user: drh tags: trunk) | |
| 20:46 | Allow a VALUES clause to be used any place that a SELECT statement can be used. (check-in: c9ea7d19 user: drh tags: trunk) | |
| 20:38 | Fix CREATE TABLE ... AS so that it works with column names that are empty strings. (check-in: 632045f2 user: drh tags: trunk) | |
| 15:31 | • Edit [4365ddd62d88dc73|4365ddd6]: Mark "Closed". (artifact: 63c0e5b3 user: drh) | |
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2014-01-09
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| 13:39 | Fix harmless compiler warning in unixUnfetch(). (check-in: 618f248f user: drh tags: trunk) | |
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2014-01-06
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| 18:32 | Start a new experimental branch for support of Oracle-style CONNECT BY syntax. (Closed-Leaf check-in: 4365ddd6 user: drh tags: connect-by) | |
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2014-01-04
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| 20:00 | Fix an typo that breaks the build when SQLITE_ENABLE_TREE_EXPLAIN is defined. (check-in: f461e2b3 user: drh 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: 8f6e6149 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: 874b7e99 user: drh tags: trunk) | |
| 15:17 | Improvements to the column-cache for nested AND/OR operators. (check-in: 4e725f53 user: drh tags: trunk) | |
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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: 429018b1 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: 9d05777f user: drh tags: trunk) | |
| 19:35 | Avoid unnecessary affinity transformations when building indices using data from a table. (check-in: 10d85135 user: drh tags: trunk) | |
| 17:57 | Be more aggressive in optimizing constant conditional expressions. (check-in: b7e39851 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: e1eba1fb 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: a221aa82 user: drh tags: trunk) | |