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100 descendants and 100 ancestors of [c2de178f]
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2017-06-26
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| 06:53 | Fix some compiler warnings in lsm_file.c. check-in: 23f16382 user: dan tags: lsm-vtab | |
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2017-06-24
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| 19:21 | Disable shell tests for the .schema command if virtual tables are not available. check-in: c8186874 user: drh tags: trunk | |
| 18:10 | Consider the values bound to SQL variables when determining whether or not a partial index may be used. check-in: 7b59c353 user: dan tags: partial-index-variables | |
| 16:35 | Make sure the config.h header is included by ctime.c, if that header exists. check-in: c2ea6293 user: drh tags: trunk | |
| 16:03 | Query planner tuning: When deciding between two plans with the same cost, bias the selection toward the one that does not use the sorter. check-in: f0ec36d4 user: drh tags: trunk | |
| 13:31 | Make sure enough memory is allocated for pathological quoting cases when computing a quoted table name in the command-line shell. check-in: 0583b84a user: drh tags: trunk | |
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2017-06-23
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| 21:05 | Merge all recent trunk enhancements into the apple-osx branch. check-in: 53b14a38 user: drh tags: apple-osx | |
| 15:47 | When generating individual loops for each ORed term of an OR scan, move any constant WHERE expressions outside of the loop, as is done for top-level loops. check-in: 712267c9 user: dan tags: trunk | |
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2017-06-22
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| 16:51 | When generating individual loops for each ORed term of an OR scan, move any constant WHERE expressions outside of the loop, as is done for top-level loops. Closed-Leaf check-in: e4a022be user: dan tags: or-optimization | |
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2017-06-21
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| 01:36 | Enable pragma virtual tables for the integrity_check, quick_check, and foreign_key_check pragmas. check-in: 118f7bb3 user: drh tags: trunk | |
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2017-06-20
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| 18:19 | Rename the azCompileOpt global constant to avoid a harmless compiler warning about a name conflict with a local variable. check-in: 94e420ec user: drh tags: trunk | |
| 17:43 | Ensure that the query planner knows that any column of a flattened LEFT JOIN can be NULL even if that column is labeled with "NOT NULL". Fix for ticket [892fc34f173e99d8]. check-in: 48346268 user: dan tags: trunk | |
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2017-06-19
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| 11:44 | Experimental "PRAGMA secure_delete=FAST" pragma. The intent is to overwrite deleted content with zeros without increasing the amount of disk I/O. Closed-Leaf check-in: f1682f0f user: drh tags: fast-secure-delete | |
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2017-06-17
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| 19:06 | Avoid adding an artifical "LIMIT 1" on scalar subqueries that do not need it. This seems like a pointless optimization as it makes minimal run-time difference but does increase code complexity. Parked on a branch for historical reference. Leaf check-in: c21628e9 user: drh tags: subquery-limit-opt | |
| 18:49 | Fix a missing comma in the previous check-in. check-in: f3db02f4 user: drh tags: trunk | |
| 17:55 | Rework the code in ctime.c a bit to report on more compile time options. And to only output configuration options passed in to SQLite, not the default values of #define symbols set automatically. Also generate the large array in ctime.c using new script tool/mkctime.tcl, instead of entering it manually. check-in: 9a443397 user: dan tags: trunk | |
| 17:29 | Ensure that the value of the THREADSAFE symbol is always included when reporting compile time options, even if it was not explicitly configured. Closed-Leaf check-in: 95141c64 user: dan tags: ctime-refactor | |
| 16:39 | Add extra test cases for sqlite3changeset_apply() and ALTER TABLE ADD COLUMN. check-in: 603838fc user: dan tags: trunk | |
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2017-06-16
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| 19:51 | Rework the code in ctime.c a bit to report on more compile time options. And to only output configuration options passed in to SQLite, not the default values of #define symbols set automatically. Also generate the large array in ctime.c using new script tool/mkctime.tcl, instead of entering it manually. check-in: bc1951d6 user: dan tags: ctime-refactor | |
| 18:31 | Minor refactoring change to clarify how ATTACH works. No functional changes. check-in: 3944a32e user: drh tags: trunk | |
| 13:43 | Prevent pagesize changes on VACUUM in encrypted databases even when running the VACUUM on an attached database. check-in: 11693849 user: drh tags: trunk | |
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2017-06-15
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| 16:56 | Move the "shell_add_schema()" SQL function used by the ".schema" command of the command-line shell to a different spot in the shell.c source file so that it is not in the middle of an unrelated module. check-in: 254617a1 user: drh tags: trunk | |
| 16:45 | Fix typo and improve the wording of the description of "Metadata" in the output of the sqlite3_analyzer tool. check-in: ca1ff707 user: drh tags: trunk | |
| 15:06 | Merge the latest changes from trunk. check-in: 60105c22 user: drh tags: lsm-vtab | |
| 13:07 | Fix harmless compiler warnings in the shell.c file check-in: 9afd7a2f user: drh tags: trunk | |
| 12:50 | Improvements to the ".tables" command in the command-line shell so that it shows the name of all schemas if the name is anything other than "main". check-in: c7f778b7 user: drh tags: trunk | |
| 12:21 | In the command-line shell, enhance the ".schema" command show that it shows the schema for ATTACH-ed databases in addition to "main". check-in: 48e08628 user: drh tags: trunk | |
| 00:52 | Enhance the sqlite3_analyzer.exe utility so that it computes and shows the number of bytes of metadata on btree pages and per table and index entry. check-in: 43ad41ef user: drh tags: trunk | |
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2017-06-13
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| 16:52 | Fix sqlite3rbu_close() so that the pzErrmsg parameter may be passed NULL. check-in: c433672d user: dan tags: trunk | |
| 04:31 | Fix the processing of double-negatives in WHERE clause constraints with STAT4. Ticket [cfa2c908f2182] check-in: 35b34bdf user: drh tags: trunk | |
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2017-06-11
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| 20:17 | Fix an off-by-one error that messes up the display of loop codes in the ".wheretrace" debugging output for queries with more than 62 candidate loops when SQLITE_ENABLE_WHERETRACE is on. check-in: 0bbdaf28 user: drh tags: trunk | |
| 19:51 | When reusing a materialized view, make sure the estimated number of output rows is correctly initialized to avoid confusing the query planner. check-in: 87aceb41 user: drh tags: trunk | |
| 19:40 | Fix the sessiondiff test module so that it does not run if the session extension is not enabled. check-in: 8f92b7a6 user: drh tags: trunk | |
| 18:26 | Fix a potential null-pointer deference following OOM introduced by check-in [e39795d7] (unreleased). check-in: a2f77285 user: drh tags: trunk | |
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2017-06-09
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| 15:14 | Merge enhancements and fixes from trunk. check-in: 3fd050c3 user: drh tags: prepare_v3 | |
| 11:43 | Update the documentation to make it clear that the table name parameter to sqlite3_table_column_metadata() may not be NULL. check-in: 2881ab1e user: drh tags: trunk | |
| 02:27 | Adjust the implementation of the ".selftest" feature of the shell to avoid using the deprecated sqlite3_get_table() interface. check-in: 3168e2c9 user: drh tags: trunk | |
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2017-06-08
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| 14:35 | Add a testcase() to confirm that an OOM on sqlite3DbStrNDup() is handled correctly in trigger.c. check-in: 343e5599 user: drh tags: trunk | |
| 11:14 | Ensure pointer map entries are always added when a row that does use overflow pages replaces one that does not in an auto-vacuum database. Fix for [fda22108]. check-in: b30dfba8 user: dan tags: trunk | |
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2017-06-07
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| 22:32 | In SQLITE_DEBUG mode, attempt to log the page number of the database that contained the problem when SQLITE_CORRUPT errors are seen. check-in: e39795d7 user: drh tags: trunk | |
| 19:46 | Fix another lsmtest build problem. Add the "-trans BOOLEAN" option to "lsmtest speed2". check-in: 61853bc1 user: dan tags: lsm-vtab | |
| 16:25 | Merge in trunk enhancements. check-in: f8bbb608 user: drh tags: prepare_v3 | |
| 10:55 | Cause the ANALYZE command to build sqlite_stat1 table entries for empty tables with the assumption that such tables really contain 10 elements. This gives better query plans for tables that are truely empty, but is likely to cause problems in legacy systems, so the change is kept off trunk. Some TCL tests fail on this check-in due to the new stat1 entries. Leaf check-in: c81f260c user: drh tags: analyze-empty-tables | |
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2017-06-06
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| 18:20 | Add the SQLITE_DEFAULT_ROWEST compile-time option for changing the estimated number of rows in tables that lack sqlite_stat1 entries. check-in: 234ede26 user: drh tags: trunk | |
| 16:14 | Fix a threading problem in lsm test code. check-in: 501238b9 user: dan tags: lsm-vtab | |
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2017-06-05
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| 19:20 | Fix a subtle bug in the remember UDF of the kvtest.exe utility program. check-in: 9eea3670 user: drh tags: trunk | |
| 16:33 | Fix a bug in test_fs.c that occurs when the first component of a path contains a GLOB or LIKE escape character. check-in: 73c70590 user: dan tags: trunk | |
| 13:28 | For the kvtest utility, add the --vacuum option to "kvtest stat" and also run PRAGMA integrity_check with "kvtest stat". check-in: f3c25df4 user: drh tags: trunk | |
| 12:29 | Fix the column width deduction logic in the command-line shell to account for multi-byte utf8 characters. check-in: ed0842c1 user: drh tags: trunk | |
| 10:31 | Omit some of the fstree tests in vtabH if the PWD contains LIKE wildcards. check-in: ead29f9c user: drh tags: trunk | |
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2017-06-03
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| 20:09 | Initialize a variable to zero to prevent an (incorrect) compiler warning of it potentially being uninitialized. check-in: 65182ce0 user: drh tags: trunk | |
| 19:16 | Fix the SQLITE_PTR_TO_INT macro so that works on recent versions of LLVM on Macs. check-in: c4089ffb user: drh tags: trunk | |
| 18:27 | Remove unused header file from kvtest. check-in: dd7e043f user: drh tags: trunk | |
| 17:24 | In kvtest, add the ability to work with a hierarchy of files on disk, in addition to having all files in the same directory. check-in: f568f666 user: drh tags: trunk | |
| 15:17 | Add the --nocheckpoint and --multitrans options to kvtest. check-in: 5828633c user: drh tags: trunk | |
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2017-06-02
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| 23:44 | Merge all recent trunk enhancements. check-in: 1d23294d user: drh tags: lsm-vtab | |
| 23:32 | Add the --fsync flag to kvtest, and document the --nosync flag. check-in: 7fdc78a6 user: drh tags: trunk | |
| 19:31 | Work toward enhancing kvtest to measure write performance. check-in: fc73e7d2 user: drh tags: trunk | |
| 15:44 | Change the name of the OP_Seek opcode into OP_DeferredSeek for better clarity of function. No functional code changes. check-in: ab33d299 user: drh tags: trunk | |
| 13:16 | Fix a typo in the header comment of the "series.c" virtual table extension. check-in: d637feb4 user: drh tags: trunk | |
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2017-06-01
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| 01:53 | Add a comment to the Lemon documentation regarding the security of the lemon.exe command-line tool. check-in: 4c2458c1 user: drh tags: trunk | |
| 00:54 | Add interfaces sqlite3_prepare_v3() and sqlite3_prepare16_v3() with the extra prepFlags argument. Add the SQLITE_PREPARE_PERSISTENT option as one bit in that argument. check-in: 4a25c588 user: drh tags: prepare_v3 | |
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2017-05-31
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| 17:30 | Add the SQLITE_STMTSTATUS_MEMUSED opcode to sqlite3_stmt_status() for finding the heap memory usage by a single prepared statement. check-in: c26cf978 user: drh tags: trunk | |
| 16:21 | Add the SQLITE_STMTSTATUS_MEMUSED option for sqlite3_stmt_status() that reports the amount of heap memory used for a single prepared statement. Closed-Leaf check-in: b57d5104 user: drh tags: stmtstatus-memused | |
| 16:09 | Add the experimental "stmts" virtual table for introspection of prepared statements. check-in: cb4c5c66 user: drh tags: trunk | |
| 13:45 | Avoid allocating excess memory to the KeyInfo objects. check-in: df785943 user: drh tags: trunk | |
| 13:27 | Remove a completely unnecessary memset() from the INSERT code generator. check-in: 7d58836b user: drh tags: trunk | |
| 11:24 | Very small performance increase in sqlite3VdbeSetNumCols(). check-in: 8885b446 user: drh tags: trunk | |
| 03:20 | Reorder fields in the PgHdr object for a performance increase. check-in: 326e63d7 user: drh tags: trunk | |
| 02:58 | Avoid unnecessary memory zeroing during expression list allocation. check-in: de28e651 user: drh tags: trunk | |
| 00:49 | Size and performance optimizations to sqlite3ResolveExprNames(). check-in: af8c0fed user: drh tags: trunk | |
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2017-05-30
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| 18:34 | Change sqlite3BtreeNext() and sqlite3BtreePrevious() so that they return SQLITE_DONE if they have already reached the end (or beginning) of the table. This gives a performance increase and size reduction. check-in: e972a386 user: drh tags: trunk | |
| 18:14 | Omit a test of codepoint 0x202F (non-break narrow space) from the fts3 ICU tests. Different versions of ICU apparently handle this obscure codepoint slightly differently. check-in: 69ae6889 user: dan tags: trunk | |
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2017-05-29
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| 22:44 | More efficient error handling and reset in the binding mechanism. check-in: 9a3e3b34 user: drh tags: trunk | |
| 17:59 | Omit unnecessary fstat() calls for determining the database file size, resulting in smaller and faster code. check-in: dd61c736 user: drh tags: trunk | |
| 17:43 | Fix an issue with OPT_FEATURE_FLAGS in configure.ac. check-in: 43ce3bd3 user: drh tags: trunk | |
| 16:45 | Avoid unnecessary fstat() calls to determine the database size when transitioning into a read transaction on a rollback-mode database. Closed-Leaf check-in: 6c3476b5 user: drh tags: io-opt | |
| 14:57 | Avoid unnecessary calls to fstat() to determine the database file size. check-in: c733a1de user: drh tags: io-opt | |
| 14:30 | Fix a typo in a comment. No code changes. check-in: cb29b838 user: drh tags: trunk | |
| 14:26 | Optimizations to the Walker object and its methods to make the code a little smaller and to help it run a little faster. check-in: 6854a34e user: drh tags: trunk | |
| 13:09 | Correctly initialize the iSelectId of FROM clause terms that are a self join of a reused materialized subquery. Without this, the EXPLAIN QUERY PLAN output for the query will identify the subquery using the uninitialized (and arbitrary) iSelectId. check-in: 43c9ae37 user: drh tags: trunk | |
| 03:48 | Improve shell help text for the '.open' command. check-in: 7cc940a9 user: mistachkin tags: trunk | |
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2017-05-27
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| 22:42 | Smaller and faster vdbeSorterCompareText(). check-in: 542dc4c5 user: drh tags: trunk | |
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2017-05-25
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| 21:35 | Small performance increase and size decrease in the btreeInitPage() routine. check-in: 6f415833 user: drh tags: trunk | |
| 17:27 | Merge the LEFT JOIN query flattener fixes from 3.19.2. check-in: 6513e4a1 user: drh tags: trunk | |
| 00:08 | The TK_IF_NULL_ROW expression node must be treated as a variable that references the table Expr.iTable. Proposed fix for ticket [7fde638e94287d2c]. check-in: 77fc2301 user: drh tags: trunk | |
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2017-05-24
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| 15:32 | Fix harmless compiler warnings in FTS5. check-in: 57a60e95 user: mistachkin tags: trunk | |
| 04:18 | Fix a problem in STAT4 equality estimation for multi-column indexes introduced by check-in [3e0590dee0e68cc1599]. check-in: cfb0d9e0 user: drh tags: trunk | |
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2017-05-23
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| 20:00 | Remove the msvc.h header file from the autoconf tarball. check-in: 84996aef user: drh tags: trunk | |
| 19:35 | Do not use strcpy() in the (obsolete) amatch extension. In releasetest.tcl, run Apple tests using -Os instead of -O1 check-in: 4440e420 user: drh tags: trunk | |
| 15:21 | Disable the LEFT JOIN flattening optimization for aggregate queries, as it does not currently work. Further fix for ticket [cad1ab4cb7b0fc344]. check-in: 44b21e35 user: drh tags: trunk | |
| 12:36 | Ensure that the expression rewriter inside the query flattener decends into the substructure of the TK_IF_NULL_ROW operator. This is a continuation of the fix for ticket [cad1ab4cb7b0fc344]. check-in: 941d8142 user: drh tags: trunk | |
| 01:21 | When flattening a query, make sure iTable attribute of TK_IF_NULL_ROW operators (that result from a prior flattening of a LEFT JOIN) are updated correctly. Fix for ticket [cad1ab4cb7b0fc344]. check-in: 92c17850 user: drh tags: trunk | |
| 00:32 | Remove a surplus semicolon, which was harmless on gcc and clang but caused compile-time errors on msvc. This only comes up using the encryption extension. check-in: 987a2b55 user: drh tags: trunk | |
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2017-05-22
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| 18:09 | Fix incompatibilities between the "sqldiff --changeset" command and the sessions module. Specifically, allow sessions to process changesets containing tables with zero operations on them and have sqldiff output the expected output for tables with multi-column primary keys. check-in: 0bb23c48 user: dan tags: trunk | |
| 18:00 | Add the ".cd" command to the command-line shell. check-in: 5fe28e15 user: drh tags: trunk | |
| 17:39 | Increase the version number to 3.20 for the next release cycle. check-in: ab471f61 user: drh tags: trunk | |
| 14:04 | Merge the last-minute 3.19.0 changes into trunk. check-in: e6ba2a93 user: drh tags: trunk | |
| 08:04 | Fix a case where NULL was being passed to memcmp() following an OOM. This is probably not a real problem, as the number-of-bytes parameter was passed 0 in this case, but it was causing a santizer complaint. check-in: 3ea2bad2 user: dan tags: trunk | |
| 00:45 | When planning a query using sorting, resolve ties in the solver by selecting loop plans with the smaller unsorted cost. check-in: f261678c user: drh tags: trunk | |
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2017-05-19
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| 22:51 | Prevent a possible NULL pointer dereference in the OP_Found opcode that can follow an OOM error. Problem found by OSS-Fuzz. check-in: c2de178f user: drh tags: trunk | |
| 20:55 | Improved comments on one routine in the query planner. Improved diagnostic output for ".wheretrace". No production code changes. check-in: 946b87a5 user: drh tags: trunk | |
| 20:47 | Fix a documentation typo. No changes to code. check-in: 68942a4f user: drh tags: trunk | |
| 12:32 | Fix some problems in fts5 code detected by -fsanitize=undefined. check-in: 35f72104 user: dan tags: trunk | |
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2017-05-18
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| 18:17 | Fix a documentation typo. No changes to code. Closed-Leaf check-in: cfa4aa20 user: drh tags: doc-type | |
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2017-05-16
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| 09:49 | Update the tool/warnings.sh script to automatically use the right options on OpenBSD. check-in: 7940bff3 user: dan tags: trunk | |
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2017-05-15
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| 15:12 | Fix the build so that it works again with SQLITE_OMIT_SUBQUERY. check-in: bb0d9281 user: drh tags: trunk | |
| 15:05 | Improvements to the omittest.tcl script. check-in: 0f05d7e9 user: drh tags: trunk | |
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2017-05-12
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| 14:05 | Make sure the 'sqlite3changegroup_*' functions are included in the SQLITE_APICALL handling. check-in: a123cb93 user: mistachkin tags: trunk | |
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2017-05-11
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| 19:09 | Add another test case for the new authorizer functionality. check-in: 339df63f user: dan tags: trunk | |
| 18:42 | Enhance the json_extract() function to reuse parses of the same JSON when the function appears multiple times in the same query. check-in: 3ba9e7ab user: drh tags: trunk | |
| 18:14 | Do not save the state of an fts5 merge operation mid-way through an input term, even if no previous entry for that term has caused any output. Doing so may corrupt the FTS index. check-in: 9a2de4f0 user: dan tags: trunk | |
| 16:49 | Cache the JSON parse used by json_extract(). Closed-Leaf check-in: 44ca6c2c user: drh tags: auxdata-cache | |
| 15:20 | Negative N values in sqlite3_get_auxdata() and sqlite3_set_auxdata() can be used to access an auxiliary data cache over all functions in a single prepared statement. check-in: ff530675 user: drh tags: auxdata-cache | |
| 13:43 | New requirements marks and documentation for the authorizer. check-in: 3980ea09 user: drh tags: trunk | |
| 12:27 | Improvements to the sqlite3_set_authorizer() documentation. check-in: 47629b19 user: drh tags: trunk | |
| 12:05 | Change the SQLITE_READ authorization call for unreferenced tables to use an empty string for the column name, as this is less likely to impact legacy authorization callbacks that assume column names are always non-NULL. check-in: 4139953a user: drh tags: trunk | |
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2017-05-10
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| 19:42 | Rename fields of the internal AuxData object to make them unique and easier to search for. check-in: 2be9850c user: drh tags: trunk | |
| 16:33 | Improved documentation for the SQLITE_READ authorizer callback. No code changes. check-in: 92c5ea70 user: drh tags: trunk | |
| 16:12 | Invoke the SQLITE_READ authorizer callback with a NULL column name for any table referenced by a query but from when no columns are extracted. check-in: 92ab1f72 user: drh tags: trunk | |
| 13:36 | Fix a couple of test scripts so that they work with -DSQLITE_DISABLE_FTS4_DEFERRED builds. check-in: 30018d31 user: dan tags: trunk | |
| 12:58 | Avoid unnecessary codec operations on in-memory subjournals. check-in: 199b2a84 user: drh tags: trunk | |
| 12:49 | Do not invoke codec macros for in-memory subjournals. Closed-Leaf check-in: d2bb0066 user: drh tags: codecless-inmemory-subjournal | |
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2017-05-08
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| 18:29 | Do not invoke codec macros when reading or writing an in-memory sub-journal. check-in: 2c145ee6 user: dan tags: codecless-inmemory-subjournal | |
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2017-05-06
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| 18:09 | Fix an obscure assertion fault that can follow an OOM. The problem was introduced by check-in [a1cf44763277b6c7]. check-in: 04e7e565 user: drh tags: trunk | |
| 17:12 | Fix requirements marks and harmless compiler warnings. check-in: 198ff4c0 user: drh tags: trunk | |
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2017-05-04
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| 11:13 | Fix a collision of the "B0" identifier name between the termios.h header file and the SHA3 implementation in the shell. check-in: b9a58dac user: drh tags: trunk | |
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2017-05-03
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| 19:36 | Remove the unused "sqlite3_stack_used" TCL command from the test harness. check-in: e24b7382 user: drh tags: trunk | |
| 17:44 | Fix the sqlite3GetInt32() function so that it correctly returns 0 on a zero-length input string. check-in: 05eba9e3 user: drh tags: trunk | |
| 15:54 | Always enable URI filenames when compiling with SQLITE_HAS_CODEC. Also allow plaintext keys using the key= query parameter. check-in: 31a51b4d user: drh tags: trunk | |
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2017-05-02
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| 18:00 | Fix the fts3EvalAverageDocsize() routine so that it returns errors from sqlite3_reset() rather than always returning SQLITE_OK. check-in: 430f539c user: drh tags: trunk | |
| 17:54 | Reuse the same materialization of a view when that view appears in a query more than once, such as in a self-join. check-in: 9e35c89d user: drh tags: trunk | |
| 16:55 | Move terms of the HAVING clause that reference only columns in the GROUP BY clause over to the WHERE clause, resulting in a faster query plan. check-in: 47cbb471 user: drh tags: trunk | |
| 16:46 | Additional comments on the sqlite3ExprIsConstantOrGroupBy() routine. No code changes. Closed-Leaf check-in: 8424492e user: drh tags: having-where-optimization | |
| 01:30 | Fix typo in comment. No changes to code. check-in: 6674814a user: mistachkin tags: trunk | |
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2017-05-01
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| 19:53 | Remove an unnecessary branch. check-in: a3317959 user: drh tags: having-where-optimization | |
| 18:24 | Enhance "PRAGMA integrity_check" to detect duplicate rowids within a leaf page. check-in: adcad37b user: dan tags: trunk | |
| 18:12 | Clear the BTCF_ValidNKey flag set if a cursor is moved by sqlite3BtreeInsert(). Fix for [f68dc596c4]. check-in: a6727eef user: dan tags: trunk | |
| 17:04 | Futher bug fixes to the function that determines when a materialized view can be reused. Closed-Leaf check-in: c64fe3a1 user: drh tags: materialized-view-reuse | |
| 16:37 | Minor bug fixes and performance enhancement. check-in: b2aae559 user: drh tags: materialized-view-reuse | |
| 15:15 | Initial implementation of an optimization that attempts to reuse the same materialization of a view on a self-join of the view. check-in: 478c34b9 user: drh tags: materialized-view-reuse | |
| 14:09 | Add extra tests for the optimization on this branch. check-in: 4921cd95 user: dan tags: having-where-optimization | |
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2017-04-29
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| 20:53 | Automatically transfer terms from the HAVING clause to the WHERE clause of an aggregate query in cases where the result of evaluating the term depends only one one or more of the GROUP BY expressions (and on no other inputs). check-in: 5375a3ce user: dan tags: having-where-optimization | |
| 19:29 | Add a single testcase() macro to the subquery processing logic. check-in: 4e1df76e user: drh tags: trunk | |
| 18:02 | Improvements to opcode documentation in the bytecode engine. No changes to code. check-in: e54c9f8d user: drh tags: trunk | |
| 15:27 | Evaluate WHERE clause terms that reference only the index before evaluating terms that require the table, and thereby avoid seeking the table row if index terms are false. This is called the "push-down" optimization in the MySQL world, we are told. check-in: d7bb79ed user: drh tags: trunk | |
| 14:56 | Minor size and performance improvements to the push-down optimization. Closed-Leaf check-in: 91dfb61a user: drh tags: pushdown-optimization | |
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2017-04-28
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| 19:59 | Within a loop that uses a non-covering index test, test non-indexed terms that can be tested without seeking the main table cursor before those that cannot. check-in: afe68f0a user: dan tags: pushdown-optimization | |
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2017-04-26
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| 17:21 | Add new test file cachespill.test. check-in: 2d0b6431 user: dan tags: trunk | |
| 14:34 | Replace <fts5.h> with "fts5.h" in test file fts5_test_tok.c. check-in: 63d9ca5c user: dan tags: trunk | |
| 04:32 | Fix a subtle bug in Lemon discovered and reported on the mailing list by Kelvin Sherlock, who also suggested the correct fix. check-in: 304689f8 user: drh tags: trunk | |
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2017-04-24
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| 14:16 | When building an ephemeral table of integers, do not assume that the table does not already contain N if the insert cursor points to N-1. Fix for ticket [61fe9745]. check-in: 1c1b0862 user: dan tags: trunk | |
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2017-04-22
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| 00:20 | Fix an assertion fault found by OSSFuzz. check-in: e39769f4 user: drh tags: trunk | |
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2017-04-21
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| 17:03 | Remove a NEVER macro for a condition that may be true as of [a47efb7c]. Problem reported by OSSFuzz. check-in: bdc50d8d user: dan tags: trunk | |
| 16:04 | Fix an FTS5 bug that could cause a prefix-query without a prefix-index on a database that contains delete-markers to return extra, non-matching, rows. check-in: 840042cb user: dan tags: trunk | |
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2017-04-19
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| 13:25 | Further improvements to coverage of fts3 module. check-in: 6b21d0fd user: dan tags: trunk | |
| 07:33 | Further modifications and test cases to improve test coverage of fts3. check-in: ea8a0d2c user: dan tags: trunk | |
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2017-04-18
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| 13:50 | Use sqlite3_table_column_metadata() instead of a SELECT statement to check for the existence of a %_stat table in fts3. This leads to smaller and easier to test code. check-in: dc2a4802 user: dan tags: trunk | |
| 11:20 | Improved optimizations of views as the right operand of a LEFT JOIN. check-in: 41c27bc0 user: drh tags: trunk | |
| 05:49 | Refactor the fts3ColumnMethod() function so that all branches can be covered. check-in: e47fdb49 user: dan tags: trunk | |
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2017-04-17
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| 23:23 | Defer checking for null in the comparison operators, since that is an uncommon case. check-in: 56845256 user: drh tags: trunk | |
| 20:50 | Do not allow a Mem object to be both NULL and some other type at the same time. check-in: e698db19 user: drh tags: trunk | |
| 18:42 | Consolidate two branches of code in the "PRAGMA foreign_key_check" implementation. check-in: 69f51f83 user: dan tags: trunk | |
| 18:02 | Fix a problem in "PRAGMA foreign_key_check" in handling a WITHOUT ROWID child table with an INTEGER PRIMARY KEY parent key. Also, if an FK violation is detected in a WITHOUT ROWID child table, do not try to read and return the rowid. The second column returned by "PRAGMA foreign_key_check" in this case (WITHOUT ROWID child table) is now always set to NULL. check-in: 690870bd user: dan tags: trunk | |
| 16:07 | Further improvements to test coverage in fts3. check-in: 352413ee user: dan tags: trunk | |
| 13:38 | Improve coverage of code in fts3. check-in: 1a08a836 user: dan tags: trunk | |
| 13:18 | Fix the ".column" output mode in the command-line shell so that it correctly counts and formats multi-byte UTF characters. check-in: f508aff8 user: drh tags: trunk | |
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2017-04-16
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| 22:41 | In the showwal command-line tool, for unix builds, if the auxiliary argument is of the form "Ntruncate" where "N" is a frame number, then truncate the WAL file after the N-th frame. check-in: 90015df3 user: drh tags: trunk | |
| 22:08 | Add the anycollseq.c loadable extension in etc/misc check-in: d7b9813c user: drh tags: trunk | |
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2017-04-15
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| 11:53 | In the skip-ahead-distinct optimization, fix a bug in the logic that determines when to invoke the optimization based on sqlite_stat1 statistics. check-in: 89f9e436 user: drh tags: trunk | |
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2017-04-14
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| 22:41 | Fix to the decision logic for when to use the skip-ahead-distinct optimization. Closed-Leaf check-in: e50fd489 user: drh tags: skip-ahead-distinct | |
| 19:46 | Remove end-of-line whitespace from lemon.c. check-in: d78355c8 user: drh tags: trunk | |
| 19:44 | Fix some left-over K&R-C constructs in lemon.c. No changes to the core. check-in: a5379905 user: drh tags: trunk | |
| 19:03 | Add the TK_IF_NULL_ROW opcode to deal with non-NULL result columns in the result set of a view or subquery on the RHS of a LEFT JOIN that gets flattened. Closed-Leaf check-in: 3a5860d8 user: drh tags: left-join-view | |
| 17:30 | When doing a DISTINCT query using an index, try to use the index to skip ahead to the next distinct element, rather than doing a full scan of the index. (This is the "skip-ahead-distinct" optimization.) check-in: f489b5bb user: drh tags: trunk | |
| 17:18 | An initial attempt to optimize VIEWs that occur as the right operand of a LEFT JOIN. This particular check-in does not work correctly because it does not deal with the case of columns in the VIEW that return non-NULL even when all columns in the table of the VIEW are NULL because of the LEFT JOIN. check-in: 1838a59c user: drh tags: left-join-view | |
| 14:50 | Make USE_FULLWARN=1 the default for MSVC and fix harmless compiler warnings. check-in: 6bf67376 user: mistachkin tags: trunk | |
| 14:02 | Enhance the sqlite3TreeView() display for Expr objects so that it shows the iRightJoinTable value for Expr nodes that have the EP_FromJoin property. check-in: 5159cb8f user: drh tags: trunk | |
| 12:39 | Simplify the interface to the subst() routines that are part of the query flattener by collecting common parameters into the SubstContext object and passing around a pointer to that object. check-in: e651074b user: drh tags: trunk | |
| 12:27 | Remove an incorrect ALWAYS(). check-in: f956f6ae user: drh tags: trunk | |
| 00:45 | Fix a couple of unreachable branches. check-in: 1aa0ea8d user: drh tags: skip-ahead-distinct | |
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2017-04-13
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| 21:29 | Fix the skip-ahead-distinct optimization so that it works with indexes that have repeated columns with different collating sequences. check-in: ce1e2b88 user: drh tags: skip-ahead-distinct | |
| 19:48 | Simplification of the skip-ahead-distinct logic. There is still an issue with handling COLLATE. check-in: 57c5173b user: drh tags: skip-ahead-distinct | |
| 18:33 | New test cases and minor fixes for the optimization on this branch. check-in: 70ac9ea1 user: dan tags: skip-ahead-distinct | |
| 15:51 | Reinstate the SQLITE_API qualifier on the sqlite3_delete_database() method in test_delete.c. Accidentally removed by the previous commit. check-in: 59c70108 user: dan tags: trunk | |
| 15:36 | Update the code in test_delete.c to use the "win32" VFS if SQLITE_OS_WIN is defined. check-in: fa9bb7b7 user: dan tags: trunk | |
| 13:01 | Only use the skip-ahead-distinct optimization if the index has been analyzed and we know that a skip-head is likely to skip over at least 11 rows. The magic number 11 was determined by experimentation. check-in: 0cf16dec user: drh tags: skip-ahead-distinct | |
| 09:45 | Allow a user column name to be used on the LHS of a MATCH operator in FTS5. check-in: 6f54ffd1 user: dan tags: trunk | |
| 01:19 | Forward port the skip-ahead-distinct branch which was abandoned for some reason that I do not recall. This port should have been achived by a merge of trunk into the previous head of skip-ahead-distinct, but that did not work. So I had to manually "rebase" the changes. check-in: 132339a1 user: drh tags: skip-ahead-distinct | |
| 00:12 | Fix a regression caused by the fix for ticket [6c9b5514077fed34551f98e64c09a1] - control characters allowed in JSON. check-in: 8e7b6118 user: drh tags: trunk | |
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2017-04-12
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| 17:50 | Update fts5 to support "<colset> : ( <expr> )" for column filtering, as well as "<colset> : NEAR(...)" and "<colset> : <phrase>". check-in: c847543f user: dan tags: trunk | |
| 17:38 | Improved \n and \r escapes in the ext/misc/dbdump.c utility function. The implementation of dbdump.c now matches the implementation in the CLI. check-in: f2643315 user: drh tags: trunk | |
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2017-04-11
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| 20:48 | Avoid updating unaffected indexes on a table as part of an UPDATE that requires foreign key processing in some cases. check-in: 7aae5c0f user: dan tags: trunk | |
| 19:58 | Avoid updating unaffected indexes on a table as part of an UPDATE that requires foreign key processing in some cases. Closed-Leaf check-in: 477bea9e user: dan tags: fkey-optimization | |
| 18:55 | Limit the depth of recursion for valid JSON in the JSON1 extension in order to avoid using excess stack space in the recursive descent parser. Fix for ticket [981329adeef51011052667a9]. check-in: 1f68c184 user: drh tags: trunk | |
| 18:06 | Smaller and faster implementation of exprMightBeIndexed(). check-in: 76cd611d user: drh tags: trunk | |
| 16:44 | Very slight smaller and faster sqlite3SelectNew() check-in: 4143650c user: drh tags: trunk | |
| 12:20 | Add an ALWAYS() around an unreachable condition in sqlite3VdbeMemGrow(). check-in: 0f3eb61f user: drh tags: trunk | |
| 11:52 | Fix a segfault that could occur if an indexed expression was used in a comparison operation within the result-set of a SELECT statement. check-in: d6bb7c42 user: dan tags: trunk | |
| 01:30 | When evaluating a query that uses an index on an expression, try to use the expression values read directly from the index rather than reevaluating the expression. check-in: a47efb7c user: drh tags: trunk | |
| 01:01 | Improved comments. Fix a problem when an indexed expression is used in an ORDER BY clause. Closed-Leaf check-in: c59eaf2b user: drh tags: covering-index-on-expr | |