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200 most recent check-ins using file ext/fts5/fts5_expr.c version c23a2e4c14
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2019-05-07
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| 02:57 | Add the exprNodeCopy() routine that will safely memcpy() an Expr node that might be a size-reduced node. (Leaf check-in: ab2ba8e732 user: drh tags: expr-node-copy-patch) | |
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2018-06-30
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| 20:15 | Merge implementation of SQL window functions from the exp-window-functions into trunk. (check-in: 17198a1206 user: dan tags: trunk) | |
| 20:00 | Fix a minor problem in the code for determining whether or not an SQL statement is SQLITE_TOOBIG. (Closed-Leaf check-in: 763e6c9e2b user: dan tags: exp-window-functions) | |
| 19:12 | Merge all changes from the weak-fallback branch except those related to the weak-fallback feature itself. (check-in: aad718fb1a user: dan tags: exp-window-functions) | |
| 18:54 | Have the tokenizer handle fallback for tokens "OVER" and "FILTER" in the same way as it does for "WINDOW". (Leaf check-in: 12d819e1c1 user: dan tags: weak-fallback) | |
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2018-06-29
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| 20:43 | Further performance related tweaks for sqlite3RunParser(). (check-in: 5eb4776598 user: dan tags: weak-fallback) | |
| 20:21 | Further tweaks to sqlite3RunParser(). (check-in: eef61ffab7 user: dan tags: weak-fallback) | |
| 19:54 | Improve on the previous checkin. Still a bit slow. (check-in: c1fb41aa7b user: dan tags: weak-fallback) | |
| 17:44 | Instead of using a lemon %fallback directive, have the tokenizer try to figure out whether an instance of "WINDOW" should be TK_WINDOW or TK_ID. (check-in: 022079cb0d user: dan tags: weak-fallback) | |
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2018-06-28
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| 20:05 | Modifications to parse.y to better support backwards compatibility for the "window" keyword. (check-in: 7c4b879bdb user: dan tags: weak-fallback) | |
| 03:38 | Introduce the concept of "weak fallback" in the parser. A weak fallback only occurs if a syntax error would result otherwise. (check-in: c41d7079fb user: drh tags: weak-fallback) | |
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2018-06-27
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| 20:24 | Add missing VdbeCoverage() and VdbeCoverageNeverTaken() macros to window.c. (check-in: 4383cb68a1 user: dan tags: exp-window-functions) | |
| 19:48 | Avoid redundant ORDER BY operations when rewriting SELECT statements that contain window functions. (check-in: 336de43a47 user: dan tags: exp-window-functions) | |
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2018-06-26
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| 20:19 | Merge latest trunk changes. (check-in: d9f814b443 user: dan tags: exp-window-functions) | |
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2018-06-25
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| 20:34 | Add documentation comment for sqlite3_create_window_function(). And further tests. (check-in: 3f2705b933 user: dan tags: exp-window-functions) | |
| 11:42 | Fix another problem that could cause a crash when a window function was used in a view. (check-in: e954145a3a user: dan tags: exp-window-functions) | |
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2018-06-23
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| 19:29 | Fix problems with using window-functions in correlated sub-queries. (check-in: 3e23cfc813 user: dan tags: exp-window-functions) | |
| 16:26 | Fix a problem with using LIMIT in window-function queries. (check-in: c1abd2dda4 user: dan tags: exp-window-functions) | |
| 07:59 | Fix a problem with using a window-function SELECT as a FROM clause sub-query in some circumstances. (check-in: 11d733396f user: dan tags: exp-window-functions) | |
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2018-06-22
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| 20:51 | Omit all window-function related code when building with SQLITE_OMIT_WINDOWFUNC. (check-in: 5f04b01646 user: dan tags: exp-window-functions) | |
| 17:57 | Merge latest trunk changes. (check-in: ebe65b2386 user: dan tags: exp-window-functions) | |
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2018-06-21
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| 23:53 | Improved context for error_log message coming from sqlite3_prepare(). (check-in: fea7ade649 user: drh tags: trunk) | |
| 23:43 | Improved context for error_log message coming from sqlite3_prepare(). (Leaf check-in: 64df1189b3 user: drh tags: ieee754) | |
| 19:20 | Fix a problem with handling single row partitions in the percent_rank() window function. (check-in: b84fbf16ea user: dan tags: exp-window-functions) | |
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2018-06-20
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| 09:23 | Add tests to improve coverage of code in window.c. Fix a problem with "SELECT row_number() OVER ()". (check-in: f41b6b7317 user: dan tags: exp-window-functions) | |
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2018-06-19
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| 21:15 | Make the ieee754() a built-in function. Add the --ieee754 option to the ".dump" command in the shell to cause it to output floating-point values as ieee754() calls, so that the floating point number will be reproduced exactly. Not sure yet that we want to go this way, but it is one option. (check-in: 7fa8f16e58 user: drh tags: ieee754) | |
| 19:16 | The file_control_ofd_locks TCL command in testfixture distinguishes between OFD locks unavailable on the platform and OFD locks not used. (Leaf check-in: 87a9e9d776 user: drh tags: ofd-locks) | |
| 19:15 | Merge latest trunk changes with this branch. (check-in: 6ad0e64b46 user: dan tags: exp-window-functions) | |
| 19:01 | OFD locks are now mostly working, but need additional tests. (check-in: 4f1fb5c94b user: drh tags: ofd-locks) | |
| 18:11 | Fix a problem caused by a sub-query containing a window function in the FROM clause of a query that itself uses a window function. (check-in: f4b1b6f85b user: dan tags: exp-window-functions) | |
| 17:19 | Miscellaneous cleanup of OFD logic. Add an #if 0 to disable the use of OFD logic, temporarily, until I can get it to actually work. (check-in: d849ade396 user: drh tags: ofd-locks) | |
| 17:13 | Fix a problem with using min() or max() as a window function. (check-in: 801074ce63 user: dan tags: exp-window-functions) | |
| 13:45 | Initial attempt to get SQLite working with OFD locks on Linux. The code here does not function correctly. This is an incremental check-in for a work in progress. (check-in: 148f8dec9a user: drh tags: ofd-locks) | |
| 11:15 | Minor change to the input grammar to make the parser tables slightly smaller. (check-in: 320fa69e6a user: drh tags: trunk) | |
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2018-06-18
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| 20:34 | Fix problems with using window functions in CREATE VIEW statements. (check-in: 943bccd2a6 user: dan tags: exp-window-functions) | |
| 20:08 | Add test case for the fix in the previous commit. (check-in: 39434262d5 user: dan tags: trunk) | |
| 19:09 | Fix typo in the 'normalize' extension. (check-in: 0c9163ea23 user: mistachkin tags: trunk) | |
| 17:36 | Ensure that all four callbacks are provided when registering a window function (otherwise SQLITE_MISUSE is returned). (check-in: 5720dcd8b1 user: dan tags: exp-window-functions) | |
| 16:55 | Add new API function sqlite3_create_window_function(), for creating new aggregate window functions. (check-in: da03fb4318 user: dan tags: exp-window-functions) | |
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2018-06-15
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| 20:46 | Add extra OOM test. (check-in: ac251f7260 user: dan tags: exp-window-functions) | |
| 19:01 | Fix another problem in lead()/lag(). And some errors that could occur following OOM faults. (check-in: fadd4dc119 user: dan tags: exp-window-functions) | |
| 16:10 | Fix a bug in the lead() and lag() window functions causing them to fail when used in queries featuring multiple window functions. (check-in: 3839fb18f9 user: dan tags: exp-window-functions) | |
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2018-06-14
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| 20:52 | Fix a problem with handling of statements containing two or more different windows. (check-in: 567e09ef2a user: dan tags: exp-window-functions) | |
| 19:06 | Fix problem with window functions min() and max() when used with a PARTITION clause and a frame starting point other than "UNBOUNDED PRECEDING". (check-in: 43eb1e75a4 user: dan tags: exp-window-functions) | |
| 14:30 | Merge latest trunk changes into this branch. (check-in: 5cf5f1808a user: dan tags: exp-window-functions) | |
| 14:27 | Improve comments and code legibility in new file window.c. (check-in: bb915854d4 user: dan tags: exp-window-functions) | |
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2018-06-13
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| 20:29 | Fix problems with "RANGE BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING" window frames. (check-in: c34f31dbd7 user: dan tags: exp-window-functions) | |
| 17:19 | Output infinity as 1e999 in the ".dump" command of the command-line shell. (check-in: ee431d55eb user: drh tags: trunk) | |
| 16:52 | Pad out the sqlite3_value structure to be a multiple of 8 bytes. (check-in: f76dc33bde user: drh tags: trunk) | |
| 16:08 | Fix some test case numbers in expert1.test. (check-in: b90c3c16c0 user: dan tags: trunk) | |
| 11:41 | Unless SQLITE_OMIT_AUTOINIT is defined, allow sqlite3_vfs_unregister() to be called before sqlite3_initialize(). (check-in: ab6c1ae46d user: dan tags: trunk) | |
| 11:11 | Check that malloc() has not already failed when invoking the xUpdate() method of a virtual table implementation. This fixes an assert() failure in FTS5 that could occur following an OOM condition. (check-in: e9a7e4d58f user: dan tags: trunk) | |
| 02:20 | Add the unused SQLITE_CANTOPEN_DIRTYWAL result code. This code was used in some historical versions on the apple-osx branch but was removed by check-in [27e20d699872b2b8]. Restore it so that old code that actually references that result code will still compile. (check-in: 9f40383eed user: drh tags: trunk) | |
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2018-06-12
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| 20:53 | Fix another issue to do with window-functions in aggregate queries. (check-in: 6413e38a17 user: dan tags: exp-window-functions) | |
| 19:35 | Documentation update: clarify that sqlite3_errcode() and related interfaces do not themselves modify the error code. (check-in: 858fc52b23 user: drh tags: trunk) | |
| 19:22 | Documentation updates: clarify the behavior of sqlite3_column and sqlite3_value interfaces following an OOM error. (check-in: 428c581e4b user: drh tags: trunk) | |
| 18:40 | Fix some problems with using window-functions in aggregate queries. (check-in: fe7081e095 user: dan tags: exp-window-functions) | |
| 13:52 | Improvements to SCopy correctness tracking when SQLITE_DEBUG is enabled. (check-in: b2973f2357 user: drh tags: trunk) | |
| 13:16 | Fix the "Synopsis" on the OP_BitNot opcode. (check-in: acd78df611 user: drh tags: trunk) | |
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2018-06-11
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| 21:33 | Improvements to the --enable and --disable options for the amalgamation tarball. (check-in: 02e337e080 user: drh tags: trunk) | |
| 20:50 | Clarify the relationship between a Window object and its associated Expr. (check-in: 0cd55e98a4 user: dan tags: exp-window-functions) | |
| 19:47 | Fix various --enable and --disable options on the top-level configure script. (check-in: 6fd7e8ceb9 user: drh tags: trunk) | |
| 18:16 | Fix handling of window frames containing negative number of rows. e.g. "ROWS x PRECEDING AND y PRECEDING" where (x<y). (check-in: b6d9c7eda8 user: dan tags: exp-window-functions) | |
| 18:06 | Fix the column cache invalidation logic in the code for ROWID uniqueness constraint checking in the INSERT command. This fixes ticket [c2432ef9089ee73bd]. (check-in: 0b485a571c user: drh tags: trunk) | |
| 17:35 | Add the OP_SetTabCol and OP_VerifyTabCol opcodes, only when compiling with SQLITE_DEBUG, to do run-time verification of the column cache. (check-in: b37614a367 user: drh tags: trunk) | |
| 13:10 | Strengthen the sqlite3VdbeMemAboutToChange() run-time verification mechanism to better detect missed calls to AboutToChange(). (check-in: 793e942205 user: drh tags: trunk) | |
| 11:19 | Fix a typon in main.mk. (check-in: e74f86f271 user: dan tags: exp-window-functions) | |
| 01:30 | Always initialize the WhereClause.hasOr field that was added by check-in [292724ffc4]. Error detected by OSSFuzz. (check-in: 9faf41713e user: drh tags: trunk) | |
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2018-06-10
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| 07:42 | Update Makefile.msc to include window.c in the build. (check-in: 16db73842a user: dan tags: exp-window-functions) | |
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2018-06-09
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| 20:52 | Fix a typo in the amalgamation autoconf file. (check-in: de0857f396 user: drh tags: trunk) | |
| 18:09 | Merge recent trunk changes with this branch. (check-in: c71f23590c user: dan tags: exp-window-functions) | |
| 17:58 | Update the amalgamation build script to include window.c. (check-in: 21d2f4a62e user: dan tags: exp-window-functions) | |
| 17:43 | Add support for FILTER clause on aggregate window functions. (check-in: ceaf798ea0 user: dan tags: exp-window-functions) | |
| 16:49 | Slightly smaller and faster code by encapsulating wal-index hash table location information in a separate WalHashLoc object rather than passing around the various elements as separate variables. (check-in: 538a365b7a user: drh tags: trunk) | |
| 14:13 | Improved comments an presentation for the recent IN operator decision improvement. (check-in: 31e480f68d user: drh tags: trunk) | |
| 02:49 | Performance improvement to sqlite3WhereExprUsage(). (check-in: fd09341390 user: drh tags: trunk) | |
| 01:12 | Compute the bitmask of indexed columns for each index once when the Index objecct is constructed, instead of recomputing it every time it is needed. (check-in: d735872ec3 user: drh tags: trunk) | |
| 00:09 | Avoid invoking the whereLoopAddOr() routine in the query planner if there are no OR operators in the WHERE clause, thus speeding up query planning slightly. (check-in: 292724ffc4 user: drh tags: trunk) | |
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2018-06-08
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| 23:23 | When the query planner has the opportunity to use an IN operater constraint on a term of an index other than the left-most term, use the estimated number of elements on the right-hand side of the IN operator to determine if makes sense to use the IN operator with index lookups, or to just do a scan over the range of the table identified by the index terms to the left. Only do this if sqlite_stat1 measurements are available as otherwise the performance estimates will not be accurate enough to discern the best plan. Bias the decision slightly in favor of using index lookups on each element of the IN operator. (check-in: 2cbbabdf5e user: drh tags: trunk) | |
| 21:21 | Only choose to scan an IN operator rather than use an index if we have real STAT1 data to suggest it is advantageous. (Closed-Leaf check-in: 30e874661d user: drh tags: in-scan-vs-index) | |
| 20:58 | Add support for the WINDOW clause. (check-in: 19c983b511 user: dan tags: exp-window-functions) | |
| 19:54 | Merge the btreeNext() assertion bug fix from trunk. (check-in: 11bd66e090 user: drh tags: in-scan-vs-index) | |
| 19:13 | Fix an assert() that can be false for a corrupt database and a strange query that uses a recursive SQL function to delete content from a corrupt database file while it is being queried. (check-in: 99057383ac user: drh tags: trunk) | |
| 18:22 | Consider doing a partial table scan to fulfill an IN operator rather than using an index. Try to pick the plan with the lowest cost. (check-in: 1fa40a78fe user: drh tags: in-scan-vs-index) | |
| 16:11 | Do not flatten sub-queries that contain window functions. (check-in: 236cb75bd1 user: dan tags: exp-window-functions) | |
| 11:45 | Fixes to allow group_concat() to be used as a window function. (check-in: 89bbc9ba8f user: dan tags: exp-window-functions) | |
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2018-06-07
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| 20:35 | Merge latest trunk changes with this branch. (check-in: 2510220342 user: dan tags: exp-window-functions) | |
| 20:08 | Add window functions lag() and lead(). (check-in: ef34207073 user: dan tags: exp-window-functions) | |
| 18:13 | The IN-early-out optimization: When doing a look-up on a multi-column index and an IN operator is used on a column other than the left-most column, then if no rows match against the first IN value, check to make sure there exist rows that match the columns to the right before continuing with the next IN value. (check-in: 09fffbdf9f user: drh tags: trunk) | |
| 18:01 | Fix the assert()s in the byte-code engine that prove that cursors are unidirectional. (Closed-Leaf check-in: 4b0b4e1403 user: drh tags: multikey-opt-idea) | |
| 17:45 | Add support for window function first_value(). (check-in: 060b264028 user: dan tags: exp-window-functions) | |
| 17:32 | Remove the NextIfOpen and PrevIfOpen opcodes which are no longer needed when the IN-early-out optimization is working. (check-in: 439c816227 user: drh tags: multikey-opt-idea) | |
| 16:07 | Test cases. (check-in: 085e863713 user: drh tags: multikey-opt-idea) | |
| 15:54 | Fix problems with the nth_value() function. (check-in: 63002b9a09 user: dan tags: exp-window-functions) | |
| 15:28 | Merge the ".stat/.eqp" CLI fix from trunk. (check-in: a91cad3381 user: drh tags: multikey-opt-idea) | |
| 15:23 | Avoid using a prepared statement for ".stats on" after it has been closed by the ".eqp full" logic. Fix for ticket [7be932dfa60a8a6b3b26bcf76]. (check-in: bb87c054b1 user: drh tags: trunk) | |
| 14:59 | Add the WHERE_IN_EARLYOUT flag and use it to clarify the logic of this optimization. (check-in: 522f1eacc2 user: drh tags: multikey-opt-idea) | |
| 14:32 | Merge recent trunk enhancements. (check-in: e9d7bf4f7b user: drh tags: multikey-opt-idea) | |
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2018-06-06
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| 23:31 | Change a comma into a logically equivalent but semantically clearer semicolon. (check-in: 71f97f0f82 user: drh tags: trunk) | |
| 20:55 | More space and performance enhancements to sqlite3VdbeRecordCompare(). (check-in: 83a60ff056 user: drh tags: trunk) | |
| 20:51 | Add implementation of nth_value() window function. (check-in: eb1fb420ac user: dan tags: exp-window-functions) | |
| 20:29 | Small performance optimization in sqlite3VdbeRecordCompareWithSkip() for the common case where the comparison is equal. (check-in: 1e616e256a user: drh tags: trunk) | |
| 19:48 | Rearrange the order of some checks in the integrity_check pragma for a very slight performance gain. (check-in: 4b853f0205 user: drh tags: trunk) | |
| 18:50 | Fix the sqlite3BeginTrans() calls within the snapshot extension. (check-in: 1fef7ad25b user: drh tags: trunk) | |
| 17:45 | Another minor optimization to OP_Transaction. (check-in: d80077aee3 user: drh tags: trunk) | |
| 17:12 | Merge the 3.24.0 changes plus a few subsequent enhancements. (check-in: be7004a971 user: drh tags: begin-concurrent-pnu) | |
| 17:03 | Merge changes from trunk, including all the 3.24.0 changes plus some later enhancements. (check-in: d7299bfeb1 user: drh tags: begin-concurrent) | |
| 16:28 | Change sqlite3BtreeBeginTrans() to return the BTREE_SCHEMA_COOKIE, for a small speed improvement when starting new transactions. (check-in: a10662aa91 user: drh tags: trunk) | |
| 01:18 | Fix the ".archive" command in the CLI (and the corresponding -A command-line option) so that it silently ignores filenames that contain "../" in their names. This prevents the "Zip Slip" attack. (check-in: 27291f2d7f user: drh tags: trunk) | |
| 00:36 | Attempt to optimize the resolveExprStep() routine by mapping Expr opcodes into a subset of opcodes that resolveExprStep() cares about and only calling the routine when those opcodes are encountered. Is slightly faster, but it seems like the very slight performance bump is not worth the added complexity. Saved on a dead-end branch for historical reference. (Closed-Leaf check-in: bad4d7a0d9 user: drh tags: dead-end) | |
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2018-06-05
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| 23:51 | Update the version number to 3.25.0 for the next development cycle. (check-in: 7598236c35 user: drh tags: trunk) | |
| 23:21 | Avoid unnecessary loads of columns in an aggregate query that are not within an aggregate function and that are not part of the GROUP BY clause. (check-in: e15e100660 user: drh tags: trunk) | |
| 20:45 | Add the OP_IfNoHope and OP_SeekHit opcodes used to reduce the number of unnecessary sqlite3BtreeMovetoUnpacked() calls when checking for an early exit on IN-operator loops. Futher optimizations are likely possible here. (check-in: 6bf251af43 user: drh tags: multikey-opt-idea) | |
| 20:04 | Calculate non-aggregate expressions in the SELECT list of an aggregate query that does not use min() or max() once per group, instead of once per row visited. (Closed-Leaf check-in: dce2dfbe15 user: dan tags: exp-agg-opt) | |
| 16:16 | Add implementation of last_value() window function. (check-in: 2493ce1a40 user: dan tags: exp-window-functions) | |
| 15:16 | Use an OP_NotFound opcode to cancel futile IN operators early. The current implementation is suboptimal because it always runs teh OP_NotFound. This still needs to be enhanced to only do the OP_NotFound if no results have been seen on the current loop. (check-in: 87a9fc504f user: drh tags: multikey-opt-idea) | |
| 13:54 | Merge trunk changes. (check-in: 047295c588 user: drh tags: multikey-opt-idea) | |
| 13:43 | Update and correct the documentation on the OP_OpenRead, OP_OpenWrite, and OP_ReopenIdx opcodes. No code changes other than the addition of an assert(). (check-in: 8a0b730d0e user: drh tags: trunk) | |
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2018-06-04
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| 19:24 | Version 3.24.0 (check-in: c7ee083322 user: drh tags: trunk, release, version-3.24.0) | |
| 18:55 | Add implementation of window function ntile(). (check-in: 3f093f608c user: dan tags: exp-window-functions) | |
| 14:10 | Merge changes from trunk. (check-in: 95fbac39ba user: drh tags: apple-osx) | |
| 13:27 | Merge recent changes from trunk. (check-in: f8df2a8e28 user: drh tags: multikey-opt-idea) | |
| 08:28 | Merge latest trunk changes into this branch. (check-in: 83d6416a86 user: dan tags: exp-window-functions) | |
| 08:22 | Add support for window function cume_dist(). Improve tests for percent_rank(). (check-in: 76543f7dd3 user: dan tags: exp-window-functions) | |
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2018-06-02
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| 21:04 | Add support for window functions row_number(), rank(), dense_rank() and percent_rank(). (check-in: 91c1cb7a21 user: dan tags: exp-window-functions) | |
| 19:14 | Avoid using a misaligned pointer. (check-in: 1ecb3aa13d user: drh tags: trunk) | |
| 19:01 | Fix the usage of posix_fallocate() so that it correctly responds to EINVAL returns. (check-in: ce2c3e7a87 user: drh tags: trunk) | |
| 17:00 | Update a test case in malloc5.test to take into account that malloc() sometimes returns slightly more space than requested. (check-in: 3d5eae1c26 user: dan tags: trunk) | |
| 16:32 | Work around a sanitizer warning about a pointer being only 4-byte aligned instead of 8-byte aligned. (Closed-Leaf check-in: 1b807b51cd user: drh tags: align8-fix) | |
| 14:37 | Proposed fix for the use of posix_fallocate() so that it handles EINVAL returns correctly. (Closed-Leaf check-in: ab3a5539db user: drh tags: einval-from-fallocate) | |
| 12:05 | Fix the CSV extension so that it works with single-column CSV files. (check-in: e336cf0048 user: drh tags: trunk) | |
| 11:31 | Ensure that sqlite3AuthRead() is only call for TK_COLUMN and TK_TRIGGER expression nodes. This fixes a harmless assert() identified by OSSFuzz. Move the assert() into a position where it is tested even if the authorizer is disabled. (check-in: d0c3beef7c user: drh tags: trunk) | |
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2018-06-01
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| 21:00 | Allow an entire partition to be cached in a temp table for all types of window frames. This is required by nth_value() and others. (check-in: b5b18f6613 user: dan tags: exp-window-functions) | |
| 13:30 | Fix a bug in the SQLITE_ENABLE_SORTER_REFERENCES code causing an out-of-bounds array reference. (check-in: 8cadaf587d user: dan tags: trunk) | |
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2018-05-31
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| 19:14 | More documentation typo fixes. No code changes. (check-in: 66c24513c2 user: drh tags: trunk) | |
| 19:00 | Fix a harmless typo in a comment used to generate documentation. (check-in: 5a2a88cb01 user: drh tags: trunk) | |
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2018-05-30
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| 20:44 | Allow min() and max() to be used as window functions. (check-in: c16125a884 user: dan tags: exp-window-functions) | |
| 14:17 | Add the Makefile.fallback makefile to the amalgamation tarball. (check-in: ce3d045633 user: drh tags: trunk) | |
| 07:36 | Do not use the codec on the resetdb.test script. (check-in: fe55cea0c8 user: drh tags: trunk) | |
| 07:24 | Fix a typo in an error message in the CLI. (check-in: 8088398081 user: drh tags: trunk) | |
| 01:14 | Fix the parser so that it builds with -DSQLITE_OMIT_CTE. (check-in: 86ee267ee8 user: drh tags: trunk) | |
| 00:59 | Fix a harmless compiler warning. (check-in: 8d02c7a6a0 user: drh tags: trunk) | |
| 00:54 | Demonstration code on a possible technique for optimizing the use of IN operator on columns to the right of multicolumn indexes. If the OP_Noop generated where were really a new opcode that checked to see if there existed any entries in the index with a matching prefix, it might prevent unnecessary iterations of the IN operator. (check-in: 92f0fe155d user: drh tags: multikey-opt-idea) | |
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2018-05-29
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| 19:12 | Increase the number of database handles opened by test script oserror.test to provoke an "out of file-descriptors" error to 20000 (from 2000). (check-in: 3b00f73456 user: dan tags: trunk) | |
| 17:17 | Fix a problem in the geopoly json parser associated with spaces before a coordinate number. (check-in: 9d8d3af89a user: drh tags: rtree-geopoly) | |
| 16:37 | Fix autoinc.test and resetdb.test so that they work with all permutations. (check-in: 89f56d6b0a user: dan tags: trunk) | |
| 15:18 | Add a comment to justify a goto statement. No code changes. (check-in: f141d80647 user: drh tags: trunk) | |
| 14:29 | More minor changes to test scripts. (check-in: ce9b756f09 user: dan tags: trunk) | |
| 14:06 | Fix some test script issues caused by recent EXPLAIN QUERY PLAN enhancements. (check-in: f808e22831 user: dan tags: trunk) | |
| 13:25 | Do not run test file "resetdb.test" as part of permutation "inmemory_journal". (check-in: 4921e5bae4 user: dan tags: trunk) | |
|
2018-05-28
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| 23:59 | The geopoly virtual table seems to be working. But only thinly tested so far. (check-in: 4288f1ad59 user: drh tags: rtree-geopoly) | |
| 18:30 | Further window frame tests and fixes. (check-in: e74c6e9185 user: dan tags: exp-window-functions) | |
| 18:29 | Do not require a statement journal in cases where REPLACE conflict handling is used to insert a single row, so long as the REPLACE operation cannot fire any triggers or foreign key actions. (check-in: 469a62ca33 user: dan tags: trunk) | |
| 18:25 | When compiling with SQLITE_DEBUG, add run-time checks to ensure that no statement aborts unless either there have been no writes or else there is a statement journal. (check-in: ce99c77244 user: drh tags: trunk) | |
| 17:43 | Fix the build so that it works with -DSQLITE_TEST_REALLOC_STRESS (Closed-Leaf check-in: 90ba2b2e5c user: drh tags: stmt-journal-testing) | |
| 17:31 | When compiling with SQLITE_DEBUG, add run-time checks to ensure that no statement aborts unless either there have been no writes or else there is a statement journal. (check-in: 5a4542dbcf user: drh tags: stmt-journal-testing) | |
| 13:23 | Untested incremental check-in. Add the geopoly_xform() function. Complete basic logic for the geopoly virtual table. (check-in: ed06cc3256 user: drh tags: rtree-geopoly) | |
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2018-05-26
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| 21:17 | More fixes for different window frame types. (check-in: 2c85668a0f user: dan tags: exp-window-functions) | |
| 20:04 | Merge the ability to plan virtual table queries using overloaded functions. (check-in: 2c2a202c14 user: drh tags: rtree-geopoly) | |
| 18:03 | Experimental change that allows overloaded functions to be analyzed by the xBestIndex method and used by the xFilter method of a virtual table. (Leaf check-in: a353b1d7ee user: drh tags: vtab-func-constraint) | |
| 16:00 | Store application-defined function names as lower-case to avoid the need for case conversions before calling xFindFunction on virtual tables. Avoid using lookaside to store the destructors for application defined functions, as lookaside should be reserved for transient allocations. (check-in: 777189ce88 user: drh tags: trunk) | |
| 13:55 | Add a single sentence of documentation about the virtual table scan flags. No changes to code. (check-in: 27b4fa5dd0 user: drh tags: trunk) | |
| 12:21 | Minor correction. (check-in: f20d9a99a4 user: drh tags: rtree-geopoly) | |
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2018-05-25
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| 22:39 | Untested incremental check-in. Basic infrastructure for geopoly in place, except for the MATCH operator. (check-in: b27451910b user: drh tags: rtree-geopoly) | |
| 20:53 | Incremental check-in: Progress toward implementing the geopoly vtab. (check-in: 9b7d6f986a user: drh tags: rtree-geopoly) | |
| 20:30 | Fix "RANGE BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING" window frame processing. (check-in: b4e9c68669 user: dan tags: exp-window-functions) | |
| 19:22 | Forward port the geopoly extension functions into the r-tree extension, with the idea of creating a new spatial index based on simply polygons. (check-in: 0593aac88a user: drh tags: rtree-geopoly) | |
| 14:39 | This is an untested proof-of-concept for enhancements to RTree that attempt to use sqlite3_value_nochange() to reduce the amount of work associated with UPDATE operations in cases where either the coordinates or the auxiliary data is unchanged. (Leaf check-in: 6f7cfeff70 user: drh tags: rtree-update-optimization) | |
| 09:36 | Merge latest trunk changes into this branch. (check-in: 6232519899 user: dan tags: exp-window-functions) | |
| 09:29 | Fixes for "ROWS BETWEEN <expr> FOLLOWING AND <expr> FOLLOWING" and "ROWS BETWEEN <expr> FOLLOWING AND UNBOUNDED FOLLOWING" (check-in: 5ac44872fd user: dan tags: exp-window-functions) | |
| 03:46 | Add SQLITE_LOCKED_VTAB and SQLITE_CORRUPT_SEQUENCE to sqlite3ErrName(). Also, use SQLITE_CORRUPT_BKPT in one more place. (Leaf check-in: eac8888db3 user: mistachkin tags: errCodes) | |
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2018-05-24
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| 23:51 | When doing a one-pass UPDATE or DELETE on virtual tables, close the cursor prior to running VUpdate. This allows one-pass to work on virtual tables that do not allow concurrent reads and writes. Enhance rtree to take advantage of this new capability. (check-in: b816023ce0 user: drh tags: trunk) | |
| 22:42 | New test case for reading and writing the same rtree concurrently. (check-in: 3ba08e53d5 user: drh tags: trunk) | |
| 22:31 | Do not allow RTree writes when a read cursor is active on the same virtual table, as the writes might rebalance and disrupt the read cursors. Return the new SQLITE_LOCKED_VTAB error code if this happens. (check-in: d4ce666108 user: drh tags: trunk) | |
| 21:10 | Allow "<expr> PRECEDING" to be used to specify the end of a window frame. (check-in: 7b709a989c user: dan tags: exp-window-functions) | |
| 17:49 | Support other frame types that use "<expr> PRECEDING" or "<expr> FOLLOWING" as start or end conditions. (check-in: ec7b648c7f user: dan tags: exp-window-functions) | |
| 17:38 | In the OOM testing logic, add the sqlite3FirstFault() routine as a place to set a breakpoint the first time any simulated OOM fault occurs for a single test case. (check-in: b4d80bd287 user: drh tags: trunk) | |
| 17:25 | Fix a typo in a comment used to generate VDBE opcode documentation. No code changes. (check-in: 36cdfbf2ce user: drh tags: trunk) | |
| 16:18 | Addition cases for rtree preformance testing in speedtest1.c. Add the --nodiff option to the speed-check.sh script. (check-in: 95f2d62cf3 user: drh tags: trunk) | |
| 13:59 | Updates to the sqlite3_vtab_nochange() documentation. No changes to code. (check-in: 5bd99abc10 user: drh tags: trunk) | |
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2018-05-23
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| 20:55 | Add support for "ROWS BETWEEN <expr> PRECEDING AND <expr> FOLLOWING" window frames. (check-in: 3a203660f1 user: dan tags: exp-window-functions) | |
| 17:53 | Remove a branch that is no longer used due to the fix to the sqlite_sequence schema problem, ticket [d8dc2b3a58cd5dc2918a1d4acbba4676a23ada4c] (check-in: 066742692a user: drh tags: trunk) | |
| 16:50 | Verify that the sqlite_sequence table exists and is in approximately the correct format prior to using it to process an autoincrement table. Fix for ticket [d8dc2b3a58cd5dc2918a1d4a]. (check-in: e199e859ac user: drh tags: trunk) | |
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2018-05-22
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| 20:36 | Merge latest trunk changes into this branch. (check-in: cdb68d2c64 user: dan tags: exp-window-functions) | |
| 20:35 | Add comments to window.c describing how other window frames will be implemented. (check-in: 16168146b2 user: dan tags: exp-window-functions) | |
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2018-05-21
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| 19:45 | Begin adding support for more esoteric window frames. (check-in: bc4b81d60d user: dan tags: exp-window-functions) | |
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2018-05-19
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| 14:15 | Fix minor problems on this branch. (check-in: 19c2e4b2f1 user: dan tags: exp-window-functions) | |
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2018-05-18
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| 17:58 | Add support for auxiliary columns to the rtree extension. (check-in: c6071ac99c user: drh tags: trunk) | |
| 17:17 | Merge enhancements from trunk, especially the CLI fixes. (Closed-Leaf check-in: a350040a3b user: drh tags: aux-data-in-rtree) | |
| 17:11 | In the CLI, detect and report errors on sqlite3_close(). Clear global variables prior to exit to so that valgrind can better detect resource leaks. (check-in: e3b2e0a078 user: drh tags: trunk) | |
| 16:53 | Avoid unnecessary sqlite3_finalize() operations. (check-in: 16f71032a3 user: drh tags: aux-data-in-rtree) | |
| 16:46 | Fix a prepare-statement leak. (check-in: 95fd296ffc user: drh tags: aux-data-in-rtree) | |
| 15:21 | Improved error messages. Limit the number of auxiliary columns to 100. (check-in: 059d20abd5 user: drh tags: aux-data-in-rtree) | |
| 14:24 | Improvements to integer/float comparisons on architectures that lack a "long double" type. (check-in: 5139ea62a8 user: drh tags: trunk) | |
| 14:19 | Remove incorrect NEVER() macro added by the previous check-in. (Closed-Leaf check-in: 3d66251113 user: drh tags: int-float-compare) | |
| 13:39 | Improvements to the sqlite3IntFloatCompare() routine for systems that lack the long double type. (check-in: ea6a03a89d user: drh tags: int-float-compare) | |
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2018-05-17
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| 20:04 | In the CLI with the -A command, if the file does not previously exist and its name looks like a ZIP archive name, then create it as a ZIP archive. (check-in: 33dc8fad7f user: drh tags: trunk) | |
| 19:24 | Evaluate multiple window functions in a single pass if they use the same window definition. Add xValue callbacks for other built-in aggregate functions. (check-in: c9f0f14094 user: dan tags: exp-window-functions) | |
| 14:26 | Handle multiple window-functions in a single query. (check-in: 35af0b750e user: dan tags: exp-window-functions) | |
| 14:09 | Improved error and help messages for the ".archive" command and "-A" option to the CLI. If a memory leak in --list processing. (check-in: 02541ac6f9 user: drh tags: trunk) | |