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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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100 descendants and 100 ancestors of [5c906e91]

2013-08-07
16:15
Change the way samples for the sqlite_stat4 table are collected. check-in: 13ed5ac1 user: dan tags: sqlite_stat4
16:04
Fix the ".dump" command on the command-line shell so that it works for "sqlite_stat4" in addition to "sqlite_stat1". check-in: 1e80c4b1 user: drh tags: sqlite_stat4
15:57
Remove the unused sqlite3Utf8to16() utility function. check-in: 9159b43e user: drh tags: sqlite_stat4
15:52
When estimating the number of rows scanned using data from the sqlite_stat4 table, avoid allocating UnpackedRecord and KeyInfo structures until they are definitely required. check-in: 353950a5 user: dan tags: sqlite_stat4
14:18
Add a guard #ifndef to test_intarray.h to prevent harm if it is #included more than once. Add a comment on the closing #endif of the guards on sqlite3.h and test_multiplex.h. check-in: 0ad83ceb user: drh tags: trunk
01:18
Fix typos and add clarification to comments in where.c. No code changes. check-in: f8d8790e user: drh tags: trunk
2013-08-06
20:15
Fixes for builds without SQLITE_ENABLE_STAT4. check-in: 84999e27 user: dan tags: sqlite_stat4
20:01
When possible, use the multi-column samples in sqlite_stat4 to estimate the number of index rows scanned by a query plan. check-in: 2973f5ca user: dan tags: sqlite_stat4
19:18
Fix a test case related to partial indices so that it works even if STAT3 is disabled. check-in: 153c6450 user: drh tags: trunk
18:35
Adjust #ifdefs in test_autoext.c so that it compiles with SQLITE_OMIT_LOAD_EXTENSION. Fix compiler warnings in two other test modules. No changes to the core. check-in: 89930ea3 user: drh tags: trunk
18:21
Update the configure script to use the latest version number (3.8.0). check-in: 52e8ec5e user: drh tags: trunk
17:24
Add a testcase() macro to verify OOM coverage. check-in: d43dcbc4 user: drh tags: trunk
16:56
Remove unreachable branches in expr.c, replacing them with assert() and testcase() statements. check-in: 9103c27c user: drh tags: trunk
14:52
Merge in the latest changes from trunk. check-in: 69d5bed0 user: drh tags: sessions
14:36
For the ".import" command of the command-line shell, start a transaction if there is not one active already. check-in: 5dcc2d91 user: drh tags: trunk
14:01
Clean up the input reader in the command-line shell for improved legibility and performance. check-in: 2b1743d6 user: drh tags: trunk
07:45
More than double the speed of the resolveP2Values() routine in vdbeaux.c by moving from an extended if-else on every opcode to a switch. Opcodes are reordered in mkopcodesh.awk to put the switched opcodes close together, for additional performance and to reduce code footprint. check-in: 924f7e4d user: drh tags: trunk
2013-08-05
22:05
Performance optimization: Avoid calling convertCompoundSelecctToSubquery() on queries that do not use the UNION, EXCEPT, or INTERSECT operators. check-in: c589b2fe user: drh tags: trunk
21:54
For the vtshim module, always zero out the xChildDestroy function pointer after calling it. check-in: 240f7252 user: mistachkin tags: trunk
19:11
Factor all KeyInfo object allocations into a single function: sqlite3KeyInfoAlloc(). Always allocate enough space so that sqlite3VdbeRecordCompare() can avoid checking boundaries and hence run faster. check-in: 7301bedd user: drh tags: trunk
19:04
Modify the vdbe code generated by ANALYZE to use fewer memory cells and cursor slots. check-in: 4a51cf28 user: dan tags: sqlite_stat4
18:00
Use N separate cursors when scanning an index with N columns to collect sqlite_stat4 data. This fixes a problem with collecting incorrect nEq values from multi-column indexes. check-in: 3a71afe6 user: dan tags: sqlite_stat4
15:32
Improve performance of sqlite3VdbeRecordCompare() by using an approximation that might give false negatives and only running the more expensive exact subexpression if the approximation fails. check-in: 28979dcd user: drh tags: trunk
12:31
Add a missing '#include "tcl.h"' to test_rtree.c. check-in: 4b8b426f user: drh tags: trunk
05:34
Fix a couple of problems in code related to sqlite_stat4. check-in: badd24d9 user: dan tags: sqlite_stat4
2013-08-03
20:24
Begin adding experimental sqlite_stat4 table. This commit is buggy. check-in: 2beea303 user: dan tags: sqlite_stat4
2013-08-02
23:40
Updates to requirements marks. No code changes. check-in: 21302076 user: drh tags: trunk
20:44
Merge in the latest trunk changes, including partial indexes, the MAX_PATH fix in os_win.c, and the sqlite3_cancel_auto_extension() API. check-in: 7e1acb39 user: drh tags: sessions
20:11
Add NEVER() and ALWAYS() macros on some unreachable yet prudent branches. check-in: c5c0a8ab user: drh tags: trunk
16:41
Add support for partial indices. check-in: 478113f1 user: drh tags: trunk
14:18
Silently ignore database name qualifiers in CHECK constraints and in partial index WHERE clauses. Closed-Leaf check-in: 2e8c845e user: drh tags: partial-indices
13:31
Fix typos in documentation for SQLITE_DBSTATUS_DEFERRED_FKS . No changes to code. check-in: f3efbfcd user: drh tags: trunk
2013-08-01
22:27
Fix the CREATE INDEX statement so that trying to create a TEMP index on a non-TEMP table throws an error rather than segfaulting. check-in: e3c8935f user: drh tags: trunk
22:26
Fix an incorrect expected result in a test case in corruptG.test. check-in: 6913831a user: drh tags: trunk
20:26
Fix a potential buffer overread in sqlite3VdbeRecordCompare() when a serial_type specifies a field that starts in bounds but is much too large for the allocated buffer. Mostly harmless. The overread is unlikely to go more than one or two bytes past the end of the buffer. check-in: e436b2f4 user: drh tags: trunk
19:17
Make sure signed integer overflow does not cause a segfault while attempting to read a corrupt database where the header size varint on a record is larger than the maximum 32-bit signed integer. check-in: c3baca99 user: drh tags: trunk
17:43
Add test case for the problem fixed by [127a5b776d]. check-in: 65816718 user: dan tags: trunk
17:21
An improved method for avoiding the use of the STAT3 samples to compute the estimated number of outputs when the left-most index is equality constrained. This check-in undoes the previous fix and applies a new one. check-in: 127a5b77 user: drh tags: trunk
16:52
Avoid using left-most column STAT3 samples if the left-most column has an equality constrain and there are inequality constraints on the second column. check-in: 31b4e63b user: drh tags: trunk
16:02
Fix bug in the logic that determines the end of a CREATE INDEX statement. Added a VACUUM test case that exposed the bug. check-in: 2e3df0bc user: drh tags: partial-indices
15:09
More test cases and corresponding bug fixes. check-in: 0c8cfdfa user: drh tags: partial-indices
13:04
Fill out an initial implementation of the sqlite3ExprImpliesExpr() function. check-in: 8e07aa2a user: drh tags: partial-indices
12:21
Refactor internal function name sqlite3VdbeGetValue() to sqlite3VdbeGetBoundValue(). check-in: 81834c30 user: drh tags: partial-indices
04:39
Fix the ANALYZE command to work with partial indices. check-in: 60353124 user: drh tags: partial-indices
03:36
Test cases and bug fixes for the partial index logic. check-in: 6b73ae7c user: drh tags: partial-indices
01:14
Add the logic to keep partial indices up to date through DML statements and when new partial indices are created. This new logic is untested except to verify that it does not interfere with full indices. check-in: fb9044d1 user: drh tags: partial-indices
2013-07-31
23:28
Limit the number of memset() calls used when determining a temporary file name on Windows. Also, fix a harmless compiler warning. check-in: 136fc293 user: mistachkin tags: trunk
23:22
Add logic to the query planner to only use partial indices if the WHERE clause constrains the search to rows covered by the partial index. This is just infrastructure. The key routine, sqlite3ExprImpliesExpr(), is currently a no-op so that partial indices will never be used. check-in: 8ca3eac1 user: drh tags: partial-indices
22:39
Slight modifications to path name translation handling for Cygwin. check-in: 33ba1f4c user: mistachkin tags: trunk
22:27
Use a new error code to represent a failure to get the configured temporary directory on Windows. check-in: c93d891b user: mistachkin tags: trunk
19:55
The MAX_PATH constant in windows is measured in characters, so multiple by 3 to get the number of bytes assuming worst-case UTF8 pathnames. check-in: bb06e157 user: drh tags: trunk
19:05
Resolve names in CREATE INDEX WHERE clauses and detect errors. Disallow expressions that contain variables, subqueries, or functions. The expression is still not used for anything, however. still unused. check-in: f2aa7842 user: drh tags: partial-indices
18:12
Here begins an experimental branch for exploring the idea of a partial index. This check-in is able to parse a WHERE clause on a CREATE INDEX statement, but does not actually do anythingn with that WHERE clause yet. check-in: 6794b2dc user: drh tags: partial-indices
2013-07-30
15:10
Reduce the size of the stack required by the codeOneLoopStart() function in where.c. check-in: eb6d4278 user: drh tags: trunk
2013-07-29
19:03
For the MSVC makefile, recompile vdbe.lo and parse.lo first. check-in: 9e819f0f user: mistachkin tags: trunk
15:54
Comment and preprocessor macro cleanup. check-in: c0809b5e user: drh tags: trunk
13:51
In main.mk, always recompile vdbe.o and parse.o first, since changes to either parse.y or vdbe.c will cause all files to be recompiled and if there are syntax errors in vdbe.c or parse.y we want to hit them early in the compile process. check-in: a94a66d1 user: drh tags: trunk
2013-07-25
17:07
In the command-line shell, work around the fact that popen() and pclose() are not defined in stdio.h. in C89 and later. check-in: 8bcbb33f user: drh tags: trunk
16:41
Fix a typo in main.c: SQLITE_DEAULT_AUTOMATIC_INDEX -> SQLITE_DEFAULT_AUTOMATIC_INDEX check-in: cc78e21c user: dan tags: trunk
16:27
Enhance the progress handler so that it keeps track of the number of VDBE cycles across sqlite3_step() calls and issues callbacks when the cumulative instruction count reaches threshold. check-in: 4698a82e user: drh tags: trunk
2013-07-24
14:54
Another attempt at generalizing the URI parsing so that it works with a wider variety of file URIs and yet remains backwards compatible. check-in: de05eb75 user: drh tags: uri-enhancement
2013-07-23
22:28
Get the new URI logic working for Windows. Closed-Leaf check-in: 0165789f user: drh tags: uri-enhancement
20:54
Update the URI filename parser to allow (and ignore) authority names in unix and to pass the authority through to the OS on windows, as this appears to be what web-browsers are doing. check-in: 74c12dee user: drh tags: uri-enhancement
2013-07-20
00:39
Merge updates from trunk. check-in: dd4b77c8 user: mistachkin tags: toTypeFuncs
00:34
Add 'queryplantest' target to the MSVC makefile. check-in: ad0551e0 user: mistachkin tags: trunk
2013-07-19
23:58
Fixes to test numbering. check-in: f755b4b2 user: mistachkin tags: trunk
2013-07-18
20:28
Remove unused "codec" code from the command-line shell. check-in: 37abfe0c user: drh tags: trunk
18:45
Improved documentation for sqlite3_set_auxdata(). Ticket [406d3b2ef91c]. check-in: 62465ecb user: drh tags: trunk
18:29
Ensure that all auxiliary data registered by calls to sqlite3_set_auxdata() is destroyed when the VM is halted. check-in: 153deac8 user: dan tags: trunk
18:28
Fix a typo in the previous commit. Closed-Leaf check-in: cd9096e6 user: dan tags: typo
17:12
Ensure that all auxiliary data registered by calls to sqlite3_set_auxdata() is destroyed when the VM is halted. Partial fix for [406d3b2ef9]. DRH adds: Stray text accidentally inserted into vdbe.c just prior to the commit breaks the build. check-in: 71effa59 user: dan tags: typo
14:50
Fix a 8-byte alignment problem in the query planner that might cause problems on sparc when compiled with -m32. check-in: 5dcffa67 user: drh tags: trunk
14:16
Documentation changes to warn that sqlite3_set_auxdata() might call the destructor even before it returns. Also fix the regexp extension to deal with that case. Ticket [406d3b2ef91c]. check-in: 7acc8cd3 user: drh tags: trunk
2013-07-17
21:08
Fix copy/paste errors in comments in the transitive_closure virtual table. No changes to code. check-in: b1b0de29 user: drh tags: trunk
18:12
Enhance the sqlite3_analyzer tool to give reports on the sizes of individual indices. check-in: 3b4096cc user: drh tags: trunk
11:54
Clear the error string pointer in sqlite3_vtab object after the error string is transferred to SQLite. Ticket [78588b938a11]. check-in: 64bf8148 user: drh tags: trunk
2013-07-16
23:26
Make sure the sqlite3_prepare16 and sqlite3_prepare16_v2 interfaces do not read past a zero-terminator if the nBytes parameter is too large. check-in: 20dba3a7 user: drh tags: trunk
21:31
Enhance the query planner so that it looks at multiple solutions to OR expressions in the WHERE clause. check-in: 5e19d054 user: drh tags: trunk
2013-07-15
17:02
Add the sqlite3_cancel_auto_extension(X) interface which will undo a prior call to sqlite3_auto_extension(X). check-in: cdce87eb user: drh tags: trunk
2013-07-12
21:09
Make sure the shell does not try to put a zero terminator on the end of an unallocated zero-length string when running ".import" on an empty file. check-in: 92adaee5 user: drh tags: trunk
2013-07-11
19:04
Change the description of how sqlite3_progress_handler() works so that the N parameter is "approximate". This aligns with the current implementation. This is a documentation change only. No changes to code. check-in: 7d829bde user: drh tags: trunk
15:31
Merge recent trunk changes (such as the query_only PRAGMA, the defer_foreign_keys PRAGMA, and the SQLITE_DBSTATUS_DEFERRED_FKS parameter to sqlite3_db_status()) into the sessions branch. check-in: 8dfc0b78 user: drh tags: sessions
15:22
Add the experimental "query_only" pragma. check-in: 6557c407 user: drh tags: trunk
15:03
Add the "defer_foreign_keys" pragma and the SQLITE_DBSTATUS_DEFERRED_FKS value for sqlite3_db_status(). This is a cherry-pick of a sequence of five checkins in the sessions branch between [1d44e5d3c2] and [d39e65fe70]. check-in: 527121ac user: drh tags: trunk
13:49
Remove the undocumented sqlite3_foreign_key_check() API and replace it with sqlite3_db_status(db, SQLITE_DBSTATUS_DEFERRED_FKS, ...). Add test cases for the new functionality. check-in: d39e65fe user: drh tags: sessions
12:19
Rename the SQLITE_DeferForeignKeys macro to shorter SQLITE_DeferFKs. Move the "defer_foreign_keys" pragma into the flagPragma() routine. check-in: 3a2ab74c user: drh tags: sessions
2013-07-10
18:14
Fix harmless compiler warnings in the progress callback logic. check-in: 908141d5 user: drh tags: trunk
13:33
Experimental "PRAGMA query_only=BOOLEAN" statement that is able to turn write capabilities on and off. Closed-Leaf check-in: ece960c4 user: drh tags: query_only
03:05
Run progress callback checks less frequently in the main VDBE evaluation loop. This makes up for the extra CPU cycles used to increment the cycle counter for SQLITE_STMTSTATUS_VM_STEP. check-in: 3e8b0201 user: drh tags: trunk
2013-07-09
15:56
Adjust the costs in the xBestIndex function of the spellfix1 virtual table to force the use of the MATCH term if it is available. check-in: f003bea9 user: drh tags: trunk
13:05
Pull in all the latest changes from trunk. check-in: af3ca4c6 user: drh tags: sessions
12:36
Modify several extensions to use the new exported function naming. Fix some shared library compilation issues. check-in: 1e39f850 user: drh tags: trunk
03:04
Make sure the schema is verified prior to processing a "WHERE 0" on the first term of a compound SELECT statement. Fix for ticket [490a4b723562429] check-in: 52a49cbc user: drh tags: trunk
2013-07-08
22:33
Make sure an adequate number of digits are shown for binary-to-text rendering of very small floating point values. check-in: 776e65f9 user: drh tags: trunk
21:12
Fix an adverse interaction between the IS NOT NULL optimization (available only with SQLITE_ENABLE_STAT3) and the transitive constraint processing. Fix for ticket [d805526eae253] check-in: 3b30b75b user: drh tags: trunk
01:27
Add an optional 5th parameter to the next_char() function that is the collating sequence to use for comparison. check-in: 9415db6e user: drh tags: trunk
2013-07-06
18:07
Fixes for test cases running in the "mmap" permutation. check-in: cdb97d41 user: dan tags: trunk
17:57
Drop any existing mapping of the database file when exiting the pager "error state", as it may at this point be too large for the database file. Do not invoke file-control MMAP_SIZE if the database file handle does not support xFetch and xUnfetch (on the grounds that xUnfetch(0) calls to invalidate the mapping cannot be made). check-in: 0ae7e75b user: dan tags: trunk
2013-07-05
19:16
Fix two test script problems revealed by permutations.test. check-in: 60cf7e44 user: dan tags: trunk
16:54
Replace an erroneous SQLITE_OMIT_VIRTUAL_TABLE in vdbeaux.c with SQLITE_OMIT_WAL. Also fix some test script problems. check-in: ff8c3f78 user: dan tags: trunk
11:10
Add missing "static" qualifier to functions in where.c. check-in: 5c906e91 user: dan tags: trunk
10:46
Make a couple of implicit casts explicit to fix compiler warnings. check-in: 9676280a user: dan tags: trunk
2013-07-02
15:25
Remove a surplus local variable check-in: 91bc840e user: drh tags: trunk
10:06
Fix a minor typo in a comment in where.c. check-in: 4a9d51e7 user: dan tags: trunk
00:06
Fix harmless typos in comments of two extensions. check-in: 1c3ed47b user: drh tags: trunk
2013-07-01
20:02
Add a query planner test case submitted by Elan Feingold and based on the Plex project. check-in: 3d49c593 user: drh tags: trunk
17:27
Add a missing test that prevented double LEFT JOINs with transitive constraints from working correctly. Fix for ticket [868145d012]. check-in: 72919ec3 user: drh tags: trunk
11:05
Further minor comment corrections and enhancements in where.c. check-in: 0d68d4d0 user: drh tags: trunk
10:38
Make a trivial comment fix in where.c. check-in: 0ffaab3b user: drh tags: trunk
2013-06-30
20:24
Fix an issue in the command-line shell with CSV import of rows with empty columns. check-in: 60b65e5e user: drh tags: trunk
2013-06-29
15:40
Fix the build of the command-line shell on windows. Windows uses "_pclose" rather than "pclose" as the pointer to the function that closes a popen pipe. check-in: b003b2b2 user: drh tags: trunk
2013-06-28
23:55
Issue the new SQLITE_WARNING_AUTOINDEX warning on the SQLite log whenever an automatic index is created. check-in: 338826ef user: drh tags: trunk
21:12
Add the SQLITE_DEFAULT_AUTOMATIC_INDEX compile-time option, which if set to zero turns automatic indices off by default. Increase the estimated cost of an automatic index. Additional minor refactoring of the automatic index code. check-in: 459b3179 user: drh tags: trunk
19:41
Allow read transactions to be freely opened and closed by SQL statements run from within the implementation of user-functions if the user-function is called by a SELECT statement that does not access any database tables (e.g. "SELECT user_function();"). check-in: f308c485 user: dan tags: trunk
17:29
Add a bit to the SQLITE_TESTCTRL_OPTIMIZATIONS option for sqlite3_file_control() that will disable the use of SQLITE_STAT3 information in the query planner. check-in: 60c19b86 user: drh tags: trunk
13:43
Fix an issue with the OmitNoopJoin optimization and add test cases that are specifically for that optimization. check-in: 5480d124 user: drh tags: trunk
01:24
Refactor the Vdbe.noIO field as Vdbe.bIsReader. The meaning is inverted. check-in: 59f98c5c user: drh tags: trunk
2013-06-27
23:54
Refactor names of fields in the sqlite3 object: "activeVdbeCnt" becomes "nVdbeActive". Related fields becomes "nVdbeRead", "nVdbeWrite", and "nVdbeExec". check-in: 14f79696 user: drh tags: trunk
19:12
Fix an error in e_expr.test. check-in: fd4ece18 user: dan tags: trunk
17:40
Make sure that sqlite3_stmt_readonly reports false for PRAGMA journal_mode and PRAGMA wal_checkpoint. Ticket [a589ec069e3]. Also keep track of whether a prepared statement does no reading or writing. check-in: 1937fd8e user: drh tags: trunk
14:24
Add a test to ensure that if BEGIN IMMEDIATE fails with SQLITE_BUSY, it does not leave the user with an open read transaction (unless one was already open). check-in: 22bced36 user: dan tags: trunk
14:07
If the filename argument to the ".import" command in the command-line shell begins with '|' then treat it as an input pipe rather than a file. check-in: 4c02b344 user: drh tags: trunk
13:26
Improved handling of backslash escapes on double-quoted arguments to dot-commands in the command-line shell. check-in: 656a1fe5 user: drh tags: trunk
13:01
The undocumented and unsupported ".selftest" command in the command-line shell utility is now only available if compiled with SQLITE_DEBUG. Also fix a windows compiler warning in that command. check-in: e88fd5b2 user: drh tags: trunk
11:46
Add extended error code SQLITE_BUSY_SNAPSHOT - returned in WAL mode when a read-transaction cannot be upgraded to a write-transaction because it is reading from a snapshot other than the most recently committed. check-in: 361c2296 user: dan tags: trunk
2013-06-26
22:46
Update the ".import" command of the command-line shell so that it can accept field values that span multiple lines and so that it issues error messages if the input text does not strictly conform to RFC4180. check-in: 93f63215 user: drh tags: trunk
18:04
Add the "vtshim" extension, implementing a wrapper around the virtual table interface to make it Disposable for the CLR. No changes to the core. check-in: 6c3839ef user: drh tags: trunk
16:30
Update the boundary3.tcl script so that it can be run with tcl 8.5 or 8.6 to regenerate boundary3.test. check-in: ebac5afa user: dan tags: trunk
13:22
Add the SQLITE_STMTSTATUS_VM_STEPS option for sqlite3_stmt_status(). check-in: bd4267f1 user: drh tags: trunk
11:49
Omit tables from the FROM clause of a join if their presence makes no difference in the final output. check-in: 6505e2ab user: drh tags: trunk
11:43
Cut over the next generation query planner. Increase the version number to 3.8.0. check-in: 0fe31f60 user: drh tags: trunk
00:34
Fix an uninitialized variable detected by valgrind. Unclear whether or not this should apply to trunk. Closed-Leaf check-in: 19ab4811 user: drh tags: nextgen-query-plan-exp
2013-06-25
22:01
Add a new (experimental) sqlite3_stmt_status() verb that returns the number of VM steps. Closed-Leaf check-in: f1366bab user: drh tags: status-vm-step
2013-06-22
15:44
Add the ability to disable the omit-join-table optimization for testing purposes. Closed-Leaf check-in: d929df9b user: drh tags: omit-join-table-opt
2013-06-21
19:39
Enhance error message handling for the vtshim module. Closed-Leaf check-in: b4a0d532 user: mistachkin tags: disposable-vtable
18:36
Remove an unused function declaration from the FTS3 source code. check-in: 096ae1d8 user: drh tags: trunk
18:29
Merge the fts4-notindexed branch with the trunk. check-in: 361084e1 user: dan tags: trunk
18:18
Add a few more tests for the fts4 notindexed option. Closed-Leaf check-in: b53c0c41 user: dan tags: fts4-notindexed
17:30
Add the "notindexed" option to fts4. check-in: 8ff2b8f5 user: dan tags: fts4-notindexed
02:15
Only eliminate inner loops of a JOIN if they are the RHS of a LEFT JOIN and if they give no more than a single result. This appears to give correct answers in all cases. check-in: d7a25cc7 user: drh tags: omit-join-table-opt
02:05
Attempt to disable inner loops of a join that do not generate output. This does not work, since the inner loops might run zero times and thus inhibit all output. Needs to be enhanced to work only for LEFT JOINs or when we know that the inner loop will always run at least once. check-in: ca839723 user: drh tags: omit-join-table-opt
00:35
Modify the query planner interface so that it always passes in the result set. This is the first step toward adding an optimization that will omit tables from a join that do not contribute to the result. check-in: 2c2577e6 user: drh tags: omit-join-table-opt
2013-06-20
17:32
Add a NEVER() macro and an explanation comment around an unreachable branch in the STAT3 logic. check-in: 604c3c5d user: drh tags: nextgen-query-plan-exp
14:17
Pull in the posix_fallocate() change from trunk. check-in: d94db3fd user: drh tags: nextgen-query-plan-exp
14:07
Disable posix_fallocate() for all systems, all the time, unless the HAVE_POSIX_FALLOCATE compile-time macro is supplied. check-in: b6744622 user: drh tags: trunk
01:27
The vtshim xCreate and xConnect functions need to store the pAux pointer into the newly created vtable object. Style fixes. check-in: 43913c7b user: mistachkin tags: disposable-vtable
00:20
Integration adjustments for the vtshim module. check-in: bf2e28dd user: mistachkin tags: disposable-vtable
2013-06-19
23:48
Merge in trunk changes to os_unix.c that allow the code to build on unix platforms that lack posix_fallocate(). check-in: bf576406 user: drh tags: nextgen-query-plan-exp
18:01
Add in the cost of doing a table lookup on OR searches. Make test case changes to deal with difference in STAT3 behavior. check-in: d97898e8 user: drh tags: nextgen-query-plan-exp
14:49
Only default HAVE_POSIX_FALLOCATE on for linux, and then only if it is not previously defined. check-in: 2b2ade92 user: drh tags: trunk
14:28
Only enable posix_fallocate by default on linux and mac. check-in: b9b30d4f user: drh tags: trunk
13:59
Additional compiler warning fixes. check-in: 8d2ae8e2 user: drh tags: nextgen-query-plan-exp
13:32
Fix a harmless uninitialized variable warning. check-in: 9d3ef3bd user: drh tags: nextgen-query-plan-exp
12:34
Simplify and add invariants to the WhereLoop merging logic inside of whereLoopInsert(). check-in: 8f27f35f user: drh tags: nextgen-query-plan-exp
03:27
Fix compiler warnings. Fix a harmless off-by-one error in the solver. check-in: 10021941 user: drh tags: nextgen-query-plan-exp
2013-06-18
20:06
Adjustments to testcase() macros for improved testability. check-in: 4fbb0c4d user: drh tags: nextgen-query-plan-exp
01:52
Remove some redundant and unreachable code. check-in: 4c6d58d7 user: drh tags: nextgen-query-plan-exp
2013-06-17
21:37
Add more testcase() macros. Fix a memory leak following OOM in the virtual table analysis logic. check-in: b61402af user: drh tags: nextgen-query-plan-exp
18:20
Simplifications to the NGQP. Add the queryplantest makefile target. Add testcase() macros in the NGQP. check-in: eaf1f1b4 user: drh tags: nextgen-query-plan-exp
14:18
Use automatic indices on subqueries of the FROM clause when appropriate. check-in: e8f12428 user: drh tags: nextgen-query-plan-exp
2013-06-15
15:11
Fix compiler warnings. check-in: 3e8ac469 user: drh tags: nextgen-query-plan-exp
2013-06-14
13:27
Comment tweaks in where.c. No changes to code. check-in: cecc5fdd user: drh tags: nextgen-query-plan-exp
02:51
Add a new ORDER BY optimization that bypasses ORDER BY terms that are constrained by == and IS NULL terms of the WHERE clause. check-in: b920bb70 user: drh tags: nextgen-query-plan-exp
2013-06-13
17:58
An index might be useful for ORDER BY if any indexed column is in the ORDER BY clause, not just the first indexed column. check-in: ade473b5 user: drh tags: nextgen-query-plan-exp
17:28
Make sure that disabling the covering index scan optimization does not prevent a covering index from being used to satisfy an ORDER BY clause. check-in: e8b7ea82 user: drh tags: nextgen-query-plan-exp
15:50
Restore the ability to do a BETWEEN query on the rowid. Also fix a nearby comment. check-in: 459a7b90 user: drh tags: nextgen-query-plan-exp
15:16
Make the MIN() and MAX() macros available in sqliteInt.h. Add TUNING comments to the NGQP and adjust costs slightly. check-in: 3a72af2a user: drh tags: nextgen-query-plan-exp
14:51
Fix an off-by-one error in the WhereCost to integer conversion. check-in: b5ca80d9 user: drh tags: nextgen-query-plan-exp
00:32
Add a prototype for an extension that sits in between the SQLite native code virtual table interface and a CLR IDisposable object. check-in: 10bba8d0 user: drh tags: disposable-vtable
2013-06-12
20:18
Activate the one-pass optimization. Update comments, especially the descriptions of the various objects. check-in: e120c558 user: drh tags: nextgen-query-plan-exp
17:55
Bug fixes in the handling of virtual tables. check-in: 25c0f729 user: drh tags: nextgen-query-plan-exp
17:17
Merge all changes from trunk. check-in: f2e15b19 user: drh tags: nextgen-query-plan-exp
17:08
"make test" now passing. check-in: addd7f46 user: drh tags: nextgen-query-plan-exp
14:52
Add the "queryplanner" test permutation. Continuing refinements to NGQP. check-in: 25e2cde1 user: drh tags: nextgen-query-plan-exp
03:48
Continue refining the NGQP check-in: 40567fdd user: drh tags: nextgen-query-plan-exp
2013-06-11
18:59
Improved processing of DISTINCT. check-in: ba897100 user: drh tags: nextgen-query-plan-exp
14:22
Add the SQLITE_FTS3_MAX_EXPR_DEPTH compile time option. check-in: 24fc9d44 user: dan tags: trunk
13:30
Fix the Parse.nQueryLoop state variable to work with NGQP. check-in: f1cac24f user: drh tags: nextgen-query-plan-exp
02:36
Use a logarithmic rather than linear cost and row-count measures. Do not report row count estimates in EQP output. check-in: b777b109 user: drh tags: nextgen-query-plan-exp
02:32
Fixes to EXPLAIN QUERY PLAN output. Change weights back to something closer to what they are in legacy. More test case fixes. Closed-Leaf check-in: 36373b85 user: drh tags: nextgen-query-plan-logcost
01:50
Handle virtual tables correctly when using logarithmic costs. Fixes to test cases. check-in: e612664a user: drh tags: nextgen-query-plan-logcost
2013-06-10
23:30
Fix test cases for the new EXPLAIN QUERY PLAN format. Add the wherecosttest tool. Other fixes to logarithm cost. check-in: aa580e36 user: drh tags: nextgen-query-plan-logcost
20:46
Fix some minor issues with logarithmic cost in NGQP. check-in: 69cf8772 user: drh tags: nextgen-query-plan-logcost
19:12
First attempt to store costs and row counts as a logarithm. check-in: 9e810967 user: drh tags: nextgen-query-plan-logcost
14:56
Simplification and performance tweak to the high-speed NGQP bypass. check-in: 0f8a38ee user: drh tags: nextgen-query-plan-exp
12:34
Performance improvements for whereScan methods. check-in: aae14350 user: drh tags: nextgen-query-plan-exp
12:17
Add a high-speed bypass for the NGQP for the common case of a simply query with quality constraints that outputs a single row. check-in: 8d1ba309 user: drh tags: nextgen-query-plan-exp
12:15
Minor problems in the high-speed NGQP fixed. Closed-Leaf check-in: 20eeccf1 user: drh tags: nextgen-query-plan-fast
2013-06-09
20:22
Fix the memory leak in CREATE TABLE that occurs if there are two or more COLLATE clauses on the same column. check-in: 7e3820e5 user: drh tags: trunk
20:16
Add test cases to demonstrate the memory leak on the COLLATE clause. Closed-Leaf check-in: 0a60212c user: drh tags: memleak
17:21
High-speed version of NGQP. Still has some minor problems. check-in: db2415fa user: drh tags: nextgen-query-plan-fast
2013-06-08
19:58
Candidate fix for a memory leak that occurs if a CREATE TABLE statement contains two or more COLLATE clauses on the same column definition. check-in: 60fc77bc user: drh tags: memleak
2013-06-07
22:12
Improve manual cleaning step performed by the multi-platform build tool for MSVC. check-in: d5bc1fe1 user: mistachkin tags: trunk
02:04
Must faster computation of estimated logarithm. check-in: dfbca3ac user: drh tags: nextgen-query-plan-exp
00:29
Further prepare-time performance improvements. check-in: 02741d17 user: drh tags: nextgen-query-plan-exp
2013-06-06
23:44
Performance improvements. check-in: 9f8e84ab user: drh tags: nextgen-query-plan-exp
23:02
Improved management of the space to hold WhereLoop.aLTerm[]. check-in: d4141ecb user: drh tags: nextgen-query-plan-exp
19:25
Remove some commented-out code that was mistakenly left in the previous check-in. check-in: b4a5dbad user: drh tags: nextgen-query-plan-exp
19:16
Clean up and reorganize the elements of the various objects in the analysis tree for the NGQP. check-in: bfc76ae1 user: drh tags: nextgen-query-plan-exp
2013-06-05
23:39
Move the definitions of the WhereLevel and WhereInfo objects out of sqliteInt.h and into where.c. This will facilitate future refactoring of the internal query planner data structures. check-in: 1574653b user: drh tags: nextgen-query-plan-exp
17:53
Performance improvement for the OR-clause analysis in the NGQP. check-in: 9b1c4954 user: drh tags: nextgen-query-plan-exp