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100 descendants of e4acd98207bf12b2
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2016-12-10
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| 00:14 | In balance_nonroot, try to combine dropCell/insertCell combinations for the dividers into a cell overwrites. This results in a very small (0.05%) performance gain which is probably not worth the added complexity. (Closed-Leaf check-in: 478627c9 user: drh tags: failed-dropCell-opt) | |
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2016-12-09
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| 19:42 | When doing the sqlite3BtreeInsert() overwrite optimization, make sure the memcpy() does not extend off the end of the page. (check-in: 684ef458 user: drh tags: trunk) | |
| 18:09 | Additional comments and an assert on the sqlite3BtreeInsert() overwrite optimization. (check-in: c1f0ae9d user: drh tags: trunk) | |
| 17:32 | In sqlite3BtreeInsert() when replacing a re-existing row, try to overwrite the cell directly rather than deallocate and reallocate the cell. (check-in: 0b86fbca user: drh tags: trunk) | |
| 16:12 | Fix an fts5 bug that could cause a crash following an OOM error or sqlite3_interrupt() interrupt. (check-in: 0ea3ece9 user: dan tags: trunk) | |
| 16:02 | Avoid unnecessary zeroing of fields in the MemPage object that are going to be reinitialized before use anyhow. A smaller and faster binary results. (check-in: 01ada3d1 user: drh tags: trunk) | |
| 00:15 | Fix an obscure problem in range estimation with STAT4. (check-in: 1f16c9a7 user: drh tags: trunk) | |
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2016-12-08
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| 23:52 | Fix the showstat4 utility program so that is displays strings using standard SQL notation (single quotes) rather than C-style notation. (check-in: 92998e4a user: drh tags: trunk) | |
| 19:04 | Fix a minor error in the cg_anno.tcl script causing the cycles-per-file counts to be miscomputed. (check-in: b26df26e user: drh tags: trunk) | |
| 18:36 | Update the tool/cg_anno.tcl script to give a summary of cycle counts by canonical source file name. (check-in: 254a83bf user: drh tags: trunk) | |
| 01:38 | More changes to take advantage of the sqlite3VdbeAppendP4() method. (check-in: 83bc5e40 user: drh tags: trunk) | |
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2016-12-07
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| 21:35 | Add the sqlite3VdbeAppendP4() method for adding P4 content to the most recently coded instruction. (check-in: 28883e8f user: drh tags: trunk) | |
| 20:22 | The use P4_DYNAMIC in place of the P4_MPRINTF operand type. (check-in: 3954f837 user: drh tags: trunk) | |
| 20:09 | Performance optimization for sqlite3VdbeAddOp4(). (check-in: 04716c90 user: drh tags: trunk) | |
| 17:06 | Put the SQLITE_UNTESTABLE compile-time option in the correct order for PRAGMA compile_options. (check-in: 24574a15 user: drh tags: trunk) | |
| 15:49 | Rename the SQLITE_OMIT_BUILTIN_TEST compile-time option to SQLITE_UNTESTABLE. (check-in: f3608187 user: drh tags: trunk) | |
| 15:38 | Prevent the flattening or where-term push-down optimizations from obscuring misuses of SQL row values that can lead to crashes or assert() failures. (check-in: 433d16ff user: dan tags: trunk) | |
| 13:49 | Always honor the sqlite3.dbOptFlags bitmask, regardless of compile-time options. Continuing fix for ticket [da78413751863]. (check-in: afab1663 user: drh tags: trunk) | |
| 07:46 | Merge latest trunk changes into this branch. (Leaf check-in: 391344d8 user: dan tags: changebatch) | |
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2016-12-06
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| 22:47 | Performance improvement and size reduction in the Expr node allocator function sqlite3PExpr(). (check-in: 2a81763e user: drh tags: trunk) | |
| 19:33 | Add missing nul-terminator to a Tcl_AppendResult() call in tclsqlite.c. (check-in: 0820f8b3 user: dan tags: trunk) | |
| 17:59 | In the LEMON parser-generator, fix the stack overflow processing so that it correct invokes the destructor on the top-level of the parse stack. (check-in: e8247065 user: drh tags: trunk) | |
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2016-12-05
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| 20:16 | Fix a harmless redundant local variable declaration in the date/time function logic. (check-in: b4bc40d1 user: drh tags: trunk) | |
| 20:06 | Work around a bug in the definition of "ino_t" on some versions of Android. (check-in: 8df492c1 user: drh tags: trunk) | |
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2016-12-02
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| 19:07 | Simplify the date/time function logic for improved rebustness and also to decrease the size of the binary. (check-in: 6e144735 user: drh tags: trunk) | |
| 17:08 | Extend the valid range of 'unixepoch' dates from JulianDay 0 through 9999-12-31. (check-in: 768c9859 user: drh tags: trunk) | |
| 14:15 | Fix a potential integer overflow during out-of-bound date computations. (Closed-Leaf check-in: 3c58b173 user: drh tags: date-overflow-fix) | |
| 02:19 | Test cases for the improved LIKE/GLOB matcher. (check-in: 0bdb7ae1 user: drh tags: trunk) | |
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2016-12-01
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| 19:58 | Avoid clearing the EP_FromJoin flag from terms in ON clauses when flattening sub-selects. Possible fix for [2df0107b]. (check-in: a427c405 user: dan tags: trunk) | |
| 19:38 | Avoid clearing the EP_FromJoin flag from terms in ON clauses when flattening sub-selects. Possible fix for [2df0107b]. (Closed-Leaf check-in: 8bed4cd5 user: dan tags: left-join-fix) | |
| 18:57 | Performance improvement for GLOB and LIKE matching for patterns with two or more multi-character wildcards ("*" or "%"). (check-in: 2df0ebf9 user: drh tags: trunk) | |
| 18:49 | Faster version of patternCompare() that uses new return values rather than an extra parameter to communicate wildcard information back up to parent searches. (Closed-Leaf check-in: a1e2b6ce user: drh tags: pattern-compare-optimization) | |
| 17:34 | Modify the patternCompare() function (used for GLOB, LIKE) to better handle patterns containing multiple wildcard characters ("*", "%"). (check-in: c5e5614d user: dan tags: pattern-compare-optimization) | |
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2016-11-30
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| 16:54 | Add the remember(V,PTR) extension function which copies an SQL value into an application variable. (check-in: d2d30914 user: drh tags: trunk) | |
| 16:39 | Merge all the latest changes from trunk. (check-in: 7ca58a07 user: drh tags: est_count_pragma) | |
| 14:47 | Fix then handling of the (oversized) integer literal -0x8000000000000000. (check-in: 3816bb41 user: drh tags: trunk) | |
| 05:08 | Change the OP_DecrJumpZero opcode back to its old behavior of always decrementing, except top the decrementing when it reaches the largest negative number. (check-in: 9d0d8c2e user: drh tags: trunk) | |
| 04:07 | More improvements to boundary cases in the date/time functions, flowing out of branch coverage testing. (check-in: 1218005a user: drh tags: trunk) | |
| 01:05 | Prevent a warning about integer overflow when using a very large negative LIMIT. (check-in: 96106d56 user: drh tags: trunk) | |
| 00:48 | Further changes to the date/time functions to suppress harmless signed integer overflow warnings that could have occurred when doing out-of-range date calculations which, according to the docs, give undefined results. (check-in: dc453b34 user: drh tags: trunk) | |
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2016-11-29
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| 20:39 | The documentation says that the built-in date-time functions give undefined results for dates before 0000-01-01 and after 9999-12-31. Change the actually implementation so that the answer given is really NULL. This also avoids unnecessary hand-wringing over an signed integer overflow that might otherwise occur when processing out-of-bound dates. (check-in: d410a839 user: drh tags: trunk) | |
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2016-11-28
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| 21:22 | Fix broken hyperlinks to the sqlite3_snapshot objection definition in the documentation. No changes to code. (check-in: 9021f687 user: drh tags: trunk) | |
| 14:52 | Simplify some code in fts5_expr.c. Add some extra test cases for the same. (check-in: 7cc2d60d user: dan tags: trunk) | |
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2016-11-26
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| 20:44 | Merge all recent trunk changes, and especially the new sqlite3_snapshot_recover() interface. (check-in: 41a3af54 user: drh tags: apple-osx) | |
| 19:44 | Add the sqlite3_snapshot_recover() interface and related functionality. (check-in: b70c85ce user: drh tags: trunk) | |
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2016-11-25
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| 20:20 | Clarification of the behavior of sqlite3_stmt_readonly() on BEGIN IMMEDIATE statements. The is comment changes only - no changes to code. (check-in: a4205a83 user: drh tags: trunk) | |
| 19:32 | Remove the OP_RowKey opcode. Use OP_RowData in its place. (check-in: 6ac7b07a user: drh tags: trunk) | |
| 19:18 | Refactor the sqlite3BtreeKey() and sqlite3BtreeData() internal interfaces into sqlite3BtreePayload() and sqlite3BtreePayloadChecked(), respectively. This is a continuation of the optimization started by check-in [2d831074cf]. The result is a slightly smaller and faster binary. (check-in: 49ebc219 user: drh tags: trunk) | |
| 17:03 | Small performance increase and size reduction in the OP_Column opcode. (check-in: a9498407 user: drh tags: trunk) | |
| 15:47 | Performance enhancement to sqlite3_snprintf(). (check-in: c53dca7f user: drh tags: trunk) | |
| 15:11 | Performance improvement in sqlite3StrAccumFinish() for the common case where no memory allocation is required. (check-in: b6acf5d4 user: drh tags: trunk) | |
| 14:30 | Add a comment to help clarify the EP_FromJoin hack in exprCodeBetween(). (check-in: 6df7c574 user: drh tags: trunk) | |
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2016-11-23
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| 23:18 | Fix the error message for invalid ".mode" arguments in the command-line shell, so that it mentions the new "quote" mode. (check-in: 9a603a18 user: drh tags: trunk) | |
| 19:31 | Code constant vector components outside of any loops in CASE and BETWEEN expressions. Fix for [1a684656]. (check-in: c08aff13 user: dan tags: trunk) | |
| 14:19 | Correctly display the names of SQL functions in the VDBE_PROFILE output. (check-in: 161192f1 user: drh tags: trunk) | |
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2016-11-22
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| 22:23 | Merge bug fixes and enhancements from trunk. (Closed-Leaf check-in: e2c4bdf5 user: drh tags: serializable-snapshot) | |
| 21:11 | Enclose the sqlite3WalSnapshotRecover() routine within (check-in: e7be3183 user: drh tags: serializable-snapshot) | |
| 20:29 | Add a new requirement mark for CAST expressions. (check-in: bee2859b user: drh tags: trunk) | |
| 19:15 | Update requirement marks to reflect changes in wording in the documentation. No changes to code. (check-in: f5ac98ef user: drh tags: trunk) | |
| 01:26 | Remove unnecessary OP_Close opcodes for a size reduction and performance increase. (check-in: 32be7aae user: drh tags: trunk) | |
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2016-11-21
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| 21:33 | Remove unnecessary OP_Close opcodes at the end of INSERT operations, resulting in smaller and faster code. (check-in: abeddb6d user: drh tags: trunk) | |
| 18:15 | Enhance speedtest1.c so that is works on older versions of SQLite, before the introduction of the group_concat() aggregate function. (check-in: 9979ba80 user: drh tags: trunk) | |
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2016-11-20
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| 17:59 | Fix harmless compiler warnings. (check-in: b3b7b42d user: drh tags: trunk) | |
| 12:00 | Prevent a possible use-after-free bug in the query optimizer. (check-in: 0a98c8d7 user: drh tags: trunk) | |
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2016-11-19
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| 18:31 | Remove the requirement to open the wal file before sqlite3_snapshot_recover() is called. Also add some comments to new functions. (check-in: 28393c41 user: dan tags: serializable-snapshot) | |
| 17:30 | Test some extra error conditions in sqlite3_recover_snapshot(). (check-in: db314213 user: dan tags: serializable-snapshot) | |
| 17:20 | Add another fault-injection test for sqlite3_snapshot_recover(). (check-in: 7e040406 user: dan tags: serializable-snapshot) | |
| 16:35 | Fix a problem causing sqlite3_snapshot_recover() to return SQLITE_IOERR_SHORT_READ. (check-in: 525f75fa user: dan tags: serializable-snapshot) | |
| 14:53 | Fix a bug in sqlite3_snapshot_recover() that could cause subsequent read transactions to use out-of-data cache entries. (check-in: 9abeb798 user: dan tags: serializable-snapshot) | |
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2016-11-18
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| 20:49 | Add experimental sqlite3_snapshot_recover() API. (check-in: 174a6076 user: dan tags: serializable-snapshot) | |
| 18:43 | Require that the database handle be in autocommit mode for sqlite3_snapshot_get() to succeed. This is because it may open a read transaction on the database file. (check-in: 83b658da user: dan tags: serializable-snapshot) | |
| 18:22 | Add tests for snapshot interfaces. (check-in: 1f7ee7af user: dan tags: serializable-snapshot) | |
| 14:38 | Enhance existing snapshot tests to serialize/deserialize snapshots. No new tests. (check-in: 16b9bf92 user: dan tags: serializable-snapshot) | |
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2016-11-17
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| 21:52 | Experimental changes for faster in-memory DB operation for large databases. (Closed-Leaf check-in: 4fe94b0f user: drh tags: memdb-opt) | |
| 20:05 | Fix a problem in rtreeD.test causing it to fail in OMIT_BUILTIN_TEST builds. (check-in: d6b3779e user: dan tags: trunk) | |
| 13:54 | Change the --enable-debug option on configure so that it enables the ".selecttrace" and ".wheretrace" commands in the command-line shell. (check-in: 2331192b user: drh tags: trunk) | |
| 13:13 | Disable the query flattener optimization for SELECT statements that are on the RHS of vector IN operators. This is a hack that fixes the bug described in ticket [da7841375186386c]. A better solution that does not disable the query flattener is needed, but this will server for the time being. (check-in: 005d5b87 user: drh tags: trunk) | |
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2016-11-15
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| 21:17 | Add a needed #include to speedtest1.c. (check-in: 77aeb705 user: drh tags: trunk) | |
| 17:37 | Experimental changes toward making snapshots serializable. (check-in: b6a81fa1 user: drh tags: serializable-snapshot) | |
| 04:00 | Change the OP_Last opcode so that it is a no-op if the cursor is already pointing at the end of the b-tree. (check-in: 66347385 user: drh tags: trunk) | |
| 02:46 | Make the VACUUM command about 9% faster by avoiding unnecessary calls to sqlite3BtreeMovetoUnpacked() while copying rowid tables. (check-in: 5ed0bd38 user: drh tags: trunk) | |
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2016-11-14
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| 20:47 | Add 8794 new test cases received from the OSS-FUZZ project. (check-in: 03f75a67 user: drh tags: trunk) | |
| 20:08 | Fix a potential use-after-free error during parsing of malformed CREATE TABLE statement. (check-in: c5dbc599 user: drh tags: trunk) | |
| 18:27 | Enhance fuzzcheck.c to accept database-specific configuration parameters in the option CONFIG table. Add the fuzzdata5.db fuzz database containing test cases from OSS-FUZZ. (check-in: a71fad45 user: drh tags: trunk) | |
| 17:25 | Fix the ossfuzz.c test module so that it does not segfault after a "PRAGMA empty_result_callbacks=1;". Add the ossshell.c program for simple command-line testing of ossfuzz.c. (check-in: 6f2d43ec user: drh tags: trunk) | |
| 15:28 | Avoid unnecessary calls to sqlite3ExprCacheAffinityChange() when generating OP_MakeRecord opcodes that do not change any register affinities. (check-in: e211c579 user: drh tags: trunk) | |
| 08:19 | Fix an fts5 problem causing a crash in phrase queries where the first token of the phrase matches one or more rows but some other token within the phrase matches zero. (check-in: e78f6f3b user: dan tags: trunk) | |
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2016-11-11
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| 20:37 | Fix harmless compiler warnings in test code for MSVC. (check-in: 7b76be41 user: drh tags: trunk) | |
| 19:08 | Avoid storing redundant fields in sorter records when the sort-key and data have fields in common. (check-in: b835cf3e user: drh tags: trunk) | |
| 19:01 | Enhance the OP_IdxInsert opcode so that it can used unpacked key values if they are available. Update the code generator to take advantage of this new capability. The speedtest1.c test is about 2.6% faster as a result. Later: This also introduced bug [30027b613b]. Bummer. (check-in: 925840cf user: drh tags: trunk) | |
| 18:19 | Remove obselete and unused logic in the update code generator. Fix the sqlite3BtreeMovetoUnpacked() routine so that it remembers the rowid of the row that it landed on. (Closed-Leaf check-in: 1a587d72 user: drh tags: unpacked-IdxInsert) | |
| 17:52 | Merge enhancements and bug-fixes from trunk. (check-in: 5515b827 user: drh tags: unpacked-IdxInsert) | |
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2016-11-10
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| 21:19 | Break up the sqlite3BtreeMovetoUnpacked() routine into an eponymous routine and sqlite3BtreeMovetoIntkey(). Each routine specializes in a single kind of btree. (Leaf check-in: 9a64a4f2 user: drh tags: split-moveto) | |
| 20:42 | Avoid a few unnecessary calls to sqlite3BtreeMovetoUnpacked(). (check-in: eac0e827 user: drh tags: unpacked-IdxInsert) | |
| 17:01 | When doing a REPLACE on a WITHOUT ROWID table with no secondary indexes, bypass the OP_NoConflict/OP_Delete sequence and directly overwrite any preexisting row, for a performance increase. (check-in: f7041cbb user: drh tags: unpacked-IdxInsert) | |
| 16:07 | Remove C++ style comments. No code changes. (check-in: 42f8aa62 user: drh tags: unpacked-IdxInsert) | |
| 14:24 | Add the unpacked key fields to OP_IdxInsert for INSERT and UPDATE statements. (check-in: 67602e40 user: drh tags: unpacked-IdxInsert) | |
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2016-11-09
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| 20:14 | Comment changes that attempt to better explain the behavior of the "seekResult" field on VdbeCursor objects and the seekResult parameter to sqlite3BtreeInsert() and the OPFLAG_USESEEKRESULT flag on insert opcodes. No changes to code. (check-in: 345b46be user: drh tags: unpacked-IdxInsert) | |
| 16:03 | Fix a simple comment typo. No changes to code. (check-in: 51d0aed8 user: drh tags: unpacked-IdxInsert) | |
| 01:38 | Make use of the unpacked key on the OP_IdxInsert on sorters with a LIMIT. (check-in: 42db7cd2 user: drh tags: unpacked-IdxInsert) | |
| 01:19 | Fix a typo on the OP_IdxInsert documentation. No code changes. (check-in: e4acd982 user: drh tags: unpacked-IdxInsert) | |