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187 check-ins using file src/resolve.c version 567888ee

2023-10-19
21:05
Ensure that when an ephemeral cursor is reopened with a second invocation of to OP_OpenEphemeral, the sequence counter is reset and the cache marked as stale. Fix for [9cdc5c46]. (check-in: d4bfa8d2 user: drh tags: branch-3.28)
2023-09-15
20:04
Drop support for the view-scan optimization as it was causing multiple performance regressions. In its place, reduce the estimated row count for DISTINCT subsqueries by a factor of 8. (check-in: 796a65fa user: drh tags: branch-3.28)
2023-02-26
11:52
In the omit-unused-subquery-columns optimization, be sure to remove the EP_Skip and EP_Unlikely flags from the result set expressions that get nulled-out. dbsqlfuzz bf1d3ed6e0e0dd8766027797d43db40c776d2b15. Also fix an incorrect ".selecttrace" code block. (check-in: 83a7f13e user: drh tags: branch-3.28)
2023-02-16
21:01
Fix an #ifdef that uses a different macro name from the main branch. (check-in: ad6ac5d3 user: drh tags: branch-3.28)
19:04
Back-port omit-unused-subquery-column enhancements into the 3.28 branch. (check-in: 57a4e91f user: drh tags: branch-3.28)
14:29
Do not compute result columns of subqueries that are never used. Make those columns NULL instead. This optimization potentially resolves the enhancement request described by [ticket baa5bb76c35a124c]. (check-in: 0163b697 user: drh tags: branch-3.28)
2022-10-24
13:50
Improve the ability of the query planner to recognize covering indexes even on tables with more than 63 columns and where the index is over columns beyond the 63rd column. (check-in: 3d1992de user: drh tags: branch-3.28)
2022-10-19
11:22
If a query uses an index where one or more of the columns of the index is an expression and if the corresponding expression is used elsewhere in the query, then strive to read the value of the expression out of the index, rather than recomputing it. This is the "Indexed Expression Optimizations". (check-in: 3da10328 user: drh tags: branch-3.28)
2022-09-01
10:41
In the query planner, add a heuristic that will reduce the cost of a full table scan for a materialized view or subquery if the full scan is the outer-most loop. This is shown to speed up some queries. (check-in: e3754cc1 user: drh tags: branch-3.28)
2022-08-10
17:03
Merge the branch-3.28a fixes into branch-3.28. (check-in: ba6bf331 user: drh tags: branch-3.28)
2022-08-09
20:22
Fix a rounding error caused by scalar->logarithm->scalar conversion when using stat4 data to estimate some range scans. (check-in: 68d86f2b user: drh tags: branch-3.28)
2021-07-13
15:30
Remove two incorrect assert() statements from the logic used to derive column names and types from subqueries. This allows the SQL associated with CVE-2020-13871 (ticket [c8d3b9f0a750a529]) to be tested. (Closed-Leaf check-in: d2e67220 user: dan tags: branch-3.28a)
2021-07-12
14:38
Fix a defect in the query-flattener optimization identified by ticket [8f157e8010b22af0]. This fix is associated with CVE-2020-15358. (check-in: 9e001b63 user: dan tags: branch-3.28a)
2020-10-22
18:58
Minor tweaks to query planning weights so that when STAT4 is enabled and functioning, a full table scan is more likely to be selected if that seems like the fastest solution. Only do this when STAT4 info is available because an error has a large potential downside. (check-in: 263293f1 user: drh tags: branch-3.28)
2020-10-02
13:57
Import further corner-case fixes for the in-scan-vs-index or OP_SeekScan optimization from trunk. (check-in: c144d640 user: drh tags: branch-3.28)
12:11
For the OP_SeekScan optimization, the OP_IdxGT does not necessarily come right after the OP_SeekGE. So use the P2 operand of OP_SeekScan to point to the first instruction after OP_IdxGT. Problem found by dbsqlfuzz. (check-in: ec37744c user: drh tags: branch-3.28)
02:07
Disable the OP_SeekScan opcode of the in-scan-vs-index optimization when in PRAGMA reverse_unordered_selects mode, as the OP_SeekScan only works with forwards scans. Thanks to OSSFuzz for pointing out the problem to us. (check-in: 9a1cdf7e user: drh tags: branch-3.28)
2020-09-30
18:22
Improved query optimization for multi-column indexes where the second or later columns are constrained by an IN operator and the earlier index columns limit the search to a small number of rows. Use the new OP_SeekScan opcode which does scanning of the relevant range of the index but gives up and falls back to doing a seek if the number of rows scanned grows to large, in order to guard against pathological cases where the estimated number of rows to be scanned is far too small. (check-in: f07ac3fb user: drh tags: branch-3.28)
2020-09-01
02:02
Improvements to the IN-early-out optimization so that it works more efficiently when there are two or more indexed IN clauses on a single table. (check-in: 49b7631e user: drh tags: branch-3.28)
2020-08-31
19:19
An attempt to improve the performance of the IN-early-out optimization (see check-in [09fffbdf9f2f6ce3]) by avoiding unnecessary calls to the b-tree search algorithm in OP_IfNoHope when the index key is at hand and the same answer can be obtained by doing a quick key comparison. Update: Experiment did not work out. (Closed-Leaf check-in: 8301da31 user: drh tags: branch-3.28-in-early-out-fail)
2020-08-17
21:03
When doing an UPDATE or DELETE using a multi-column index where only a few of the earlier columns of the index are useful for the index lookup, postpone doing the main table seek until after all WHERE clause constraints have been evaluated, in case those constraints can be covered by unused later terms of the index, thus avoiding unnecessary main table seeks. (check-in: 0ecda433 user: dan tags: branch-3.28)
2020-05-06
18:46
Provide the SQLITE_DEFAULT_LEGACY_ALTER_TABLE compile-time option. (check-in: b2325a6e user: drh tags: branch-3.28)
2020-01-17
15:33
More restrictions on changes to shadow tables when in defensive mode. (check-in: b302b260 user: drh tags: branch-3.28)
15:24
Validate the type, name, and tbl_name fields of the sqlite_master table when loading the schema, unless writable_schema is engaged. (check-in: 3d13fbf2 user: drh tags: branch-3.28)
14:56
Do not allow shadow tables to be dropped in defensive mode. (check-in: ad1f760f user: drh tags: branch-3.28)
14:30
Import the 3.31.0-beta FTS3/4 code directly into the 3.28 branch, thus providing 3.28 with all the latest 3.31 fixes. FTS3 has not been enhanced to use any core functionality that was not already available in 3.23, so no modifications were made to FTS3 sources for this import. (check-in: be4269c6 user: drh tags: branch-3.28)
2019-07-18
20:55
Fix a problem where self-joins on views that are aggregate queries may return the wrong result. Cherrypick of [74ef97bf51dd531a]. (check-in: 2f0a564f user: mistachkin tags: branch-3.28)
2019-06-03
15:10
Fix harmless compiler warning in lemon. (check-in: 3a052429 user: mistachkin tags: branch-3.28)
13:53
Fix the count-of-view optimization so that it is (correctly) disabled for a query that includes a WHERE clause or a GROUP BY clause. Cherrypick of [05897ca48a40c6771]. (check-in: 583e5a0a user: mistachkin tags: branch-3.28)
2019-04-29
13:30
Improved header comment and precondition checking for the new isDupColumn() function. (Closed-Leaf check-in: 740d5ff6 user: drh tags: tkt-3182d38790)
2019-04-28
19:27
Take collating sequence into account when removing redundant columns from indexes on WITHOUT ROWID tables. This is the first proof-of-concept fix for ticket [3182d3879020ef3]. More testing needed. (check-in: b34fa5bf user: drh tags: tkt-3182d38790)
2019-04-27
20:39
Add the shardvtab virtual table that uses the new cost estimation functions. (Leaf check-in: 9404300a user: drh tags: cost-est)
20:30
Add the ".recover" command to the shell tool. For recovering as much data as possible from corrupt databases. (check-in: 50fe4845 user: dan tags: trunk)
20:16
Fix a minor typo in a comment. No changes to code. (check-in: 95209072 user: drh tags: trunk)
20:15
Fix building the shell with SQLITE_OMIT_VIRTUAL_TABLE. And without SQLITE_ENABLE_DBPAGE_VTAB. (Closed-Leaf check-in: 425d708c user: dan tags: dbdata)
19:36
Add comments and fix formatting issues in new code in shell.c.in. (check-in: b91d819b user: dan tags: dbdata)
18:47
Add the "--lost-and-found" option to the ".recover" command. For setting the name of the orphaned rows table. (check-in: 67bb88e2 user: dan tags: dbdata)
15:35
Fix a problem in the .recover command with recovering WITHOUT ROWID tables where the PK columns are not the leftmost in the CREATE TABLE statement. (check-in: 91df4b8e user: dan tags: dbdata)
2019-04-26
21:11
Have .recover store all orphaned rows in a single table, with extra columns to indicate the orphaned page and sub-tree they were discovered within. (check-in: 7221f6e3 user: dan tags: dbdata)
17:20
An experimental interface for retrieving the estimated cost and estimated number of output rows for a query. (check-in: 1b25fa10 user: drh tags: cost-est)
17:08
Omit tests of the LIKE optimization in like3.test when SQLITE_ENABLE_ICU is defined. (check-in: af53c41a user: dan tags: trunk)
15:40
Fix another problem with database freelist handling in the ".recover" command. (check-in: bee2652a user: dan tags: dbdata)
15:14
Fix a locking-page related problem with the ".recover" command. (check-in: afdae104 user: dan tags: dbdata)
2019-04-25
20:06
Merge latest trunk changes into this branch. (check-in: 1da302d8 user: dan tags: dbdata)
19:23
Unless the "--freelist-corrupt" option is specified, do not have the .recover command attempt to recover data from pages that are on the database free-list. (check-in: 8d2f52bb user: dan tags: dbdata)
18:15
Add the sqlite3_hard_heap_limit64() interface and the corresponding "PRAGMA hard_heap_limit=N" command. (check-in: b0ccef61 user: drh tags: hard-heap-limit)
16:20
Fix a bug preventing .recover from working on databases where the final page of the db is corrupt. (check-in: 959bbd11 user: dan tags: dbdata)
2019-04-24
20:48
Improve the performance of the .recover command. (check-in: a5076831 user: dan tags: dbdata)
17:04
New test cases in test/fuzzdata8.db. (check-in: 7be6222c user: drh tags: trunk)
16:13
Fix another instance in fts3 where a corrupt record can cause a buffer overflow. (check-in: e1724f1d user: dan tags: trunk)
15:57
Fix a problem in fts5 where a corrupt position list could lead to a buffer overwrite. (check-in: 516ca894 user: dan tags: trunk)
15:13
Fix an error in fts3_write.c allowing a corrupt database to cause a crash. (check-in: 6e4a5f22 user: dan tags: trunk)
04:53
Correction to the #if in the previous check-in. (check-in: 30dc05ac user: mistachkin tags: trunk)
00:37
Fix for 8-byte alignment asserts that can trigger in some circumstances with 32-bit MSVC. (check-in: 4c02832e user: mistachkin tags: trunk)
2019-04-23
22:00
Make no atttempt to generate VDBE code for VACUUM after a syntax error. (check-in: 93084247 user: drh tags: trunk)
20:48
Have ".recover" handle "\r" and "\n" in the same way as ".dump". (check-in: f95f0f02 user: dan tags: dbdata)
18:03
Fixes for the ".recover" shell command. (check-in: 8dcc1d89 user: dan tags: dbdata)
15:30
Changes to the --hexdb decoder option in the shell (and also in the TCL test code) so that it works on systems where sscanf() does not recognize "%hhx" as wanting to delivery results into a character-size variable. (check-in: 4258e42d user: drh tags: trunk)
15:21
Minor simplification of NULL value handling for STAT4. Cherrypick of [69bad9257f8db6a2] from trunk. (check-in: 442c177d user: mistachkin tags: branch-3.28)
15:08
Minor simplification of NULL value handling for STAT4. (check-in: 69bad925 user: mistachkin tags: trunk)
12:31
New test cases in fuzzdata8.db. (check-in: 0fe3c3fd user: drh tags: trunk)
12:30
Improvement on the previous check-in. Parse.rc is less reliable than Parse.nErr for detecting SQLITE_TOOBIG errors. (check-in: 8d478cfb user: drh tags: trunk)
2019-04-22
20:52
Enhance the ".recover" command. Fix a problem with overflow pages in dbdata.c. (check-in: f193ca58 user: dan tags: dbdata)
20:05
Early detection of SQLITE_TOOBIG when processing nested queries. (check-in: 5d85d80e user: drh tags: trunk)
11:47
Fix an assert() that may be false for corrupt databases. (check-in: b2ce5ed1 user: dan tags: trunk)
2019-04-20
20:57
Add the ".recovery" command to the shell tool. For recovering the maximum amount data from corrupt databases. Still needs work. (check-in: 7461d2e1 user: dan tags: dbdata)
2019-04-19
23:05
Mark a single branch as no longer reachable. (check-in: 4f35b3b7 user: drh tags: trunk)
22:01
Increase the version number to 3.29 for the next development cycle. (check-in: 6cf16703 user: drh tags: trunk)
18:10
Mark two branches as unreachable. Oops - one of those branches was reachable via fuzzcheck tests. (Closed-Leaf check-in: 9b888fcc user: drh tags: mistake)
17:26
Improved optimization of the AND and OR operators. (check-in: 0fbd154e user: drh tags: trunk)
16:34
Fix a problem with renaming a table that starts with "sqlite". Fix for ticket [f00d7b65]. (check-in: a2ead8aa user: dan tags: trunk)
16:21
Use macros to determine if an expression is always true or always false. (check-in: 6de980a0 user: drh tags: trunk)
13:38
Streamline the processing of the AND operator. Slightly smaller and faster. (check-in: 7713996a user: drh tags: trunk)
2019-04-18
21:14
Add the sqlite_dbptr virtual table to the dbdata extension. For querying the links between b-tree pages. (check-in: 3213a15f user: dan tags: dbdata)
19:21
Minor simplification of NULL value handling for STAT4. (Closed-Leaf check-in: 5718a9d5 user: mistachkin tags: nullStat4)
17:37
Undo change to 'analyze9.test' because the extra output can be useful for debugging. (Leaf check-in: f3081e59 user: mistachkin tags: msvc)
2019-04-17
23:56
Fix a couple minor test issues. (check-in: 1f1866d1 user: mistachkin tags: msvc)
23:32
Work around lack of a C99 feature in MSVC. (check-in: f6ebe1c2 user: mistachkin tags: msvc)
21:17
Add the experimental dbdata extension. (check-in: a3ab5883 user: dan tags: dbdata)
21:12
Small performance and size optimization in sqlite3WalFindFrame(). (check-in: 03f2e788 user: drh tags: trunk)
13:58
Fix a typo in the CLI help output for the ".dump" command. (check-in: 57638248 user: drh tags: trunk)
13:23
In the "pgidx" report from "showdb", also show the number of rows on each database btree page. (check-in: 2bda9dc4 user: drh tags: trunk)
12:29
In the "pgidx" command of the showdb utility, try to identify orphaned pages and show when pages have been zeroed out. (check-in: eed701ef user: drh tags: trunk)
12:07
Small performance improvement on the variable-length integer decoder: sqlite3GetVarint(). (check-in: 5df2bf62 user: drh tags: trunk)
11:34
Faster and smaller implementation of sqlite3StrICmp(). (check-in: 7ac500fb user: drh tags: trunk)
2019-04-16
19:49
Version 3.28.0 (check-in: 884b4b7e user: drh tags: trunk, release, version-3.28.0)
11:21
Avoid a sanitizer error (pointer arithmatic overflow) in vdbesort.c. (check-in: af61a2fc user: dan tags: trunk)
10:51
Avoid a sanitizer error in test1.c. Have releasetest.tcl/wapptest.tcl create a file called "makecommand.sh" that can be used to rerun a test from the command line. (check-in: 4de4480f user: dan tags: trunk)
2019-04-15
19:17
Fix a bug in test module test_fs.c causing a segfault on OpenBSD. (check-in: ee886600 user: dan tags: trunk)
15:41
Fix a problem with the user-auth extension and deserializing in-memory databases. (check-in: 09fa0b3c user: dan tags: trunk)
15:35
Merge recent changes from trunk into reuse-schema (check-in: 5c6c9e7f user: drh tags: reuse-schema)
15:28
Merge all recent enhancements. (check-in: 1cd536ec user: drh tags: begin-concurrent-pnu-wal2)
15:17
Merge the latest trunk enhancements. (check-in: 8950f119 user: drh tags: wal2)
15:07
Merge the latest enhancements from trunk. (check-in: 6caaaf21 user: drh tags: begin-concurrent-pnu)
14:59
Merge the latest enhancements from trunk. (check-in: 7c328e88 user: drh tags: begin-concurrent)
14:49
Bring in the latest enhancements from trunk. (check-in: 378230ae user: drh tags: apple-osx)
13:59
Fix a test script problem in fts5corrupt3.test. (check-in: 734192d8 user: dan tags: trunk)
13:51
Update tool/symbols.sh to ignore symbols from sessions and rebaser and to not try to compile with ICU which is not available on all platforms. (check-in: 0bab4ece user: drh tags: trunk)
2019-04-14
00:40
Remove a stray tab from the source code. (check-in: 0ada58e9 user: drh tags: trunk)
00:34
Fix an obsolete comment and other minor issues from code inspection. (check-in: cd084427 user: drh tags: trunk)
2019-04-13
16:50
Fix a harmless compiler warning in test logic. (check-in: c3932e66 user: drh tags: trunk)
16:43
Fix the fts3varint.test script so that it works even on versions of TCL for which Tcl_GetWideIntFromObj() does not work. (check-in: 53f787ad user: drh tags: trunk)
16:35
Fix a test script problem in fts5corrupt3.test. (check-in: 858f6227 user: dan tags: trunk)
15:07
Partially revert the test file changes in [4371a0c46e]. It is no longer required following [93ae382e97c23c90]. (check-in: 593a7e6e user: dan tags: trunk)
14:17
Fix additional compiler warnings introduced by the previous check-in and found by MSVC. (check-in: 6fc0deff user: drh tags: trunk)
14:07
Fixes for harmless compiler warnings. (check-in: c28c973a user: drh tags: trunk)
04:38
Use the 64-bit memory allocator interfaces in extensions, whenever possible. (check-in: 07ee06fd user: drh tags: trunk)
04:01
Enforce the SQLITE_LIMIT_COLUMN limit on virtual tables. (check-in: 0b6ae032 user: drh tags: trunk)
2019-04-12
20:33
Add the socketvfs test extension. (Leaf check-in: f5b3ce94 user: dan tags: socketvfs)
16:25
Test case changes so that they work with both Tcl8.6 and Tcl8.7. (check-in: 7b771405 user: drh tags: trunk)
13:40
Tweaks to wapptest.tcl: Ensure that the "Debug" checkbox is disabled unless the app is in "config" state, and have Debug variants run "test" instead of "fulltest". (check-in: dd248c18 user: dan tags: trunk)
12:10
Fix minor problems in tcl test scripts. (check-in: 56b66418 user: dan tags: trunk)
2019-04-11
19:07
Add the test/wapptest.tcl script, an alternative to releasetest.tcl that uses wapp to provide the user-interface. (check-in: edd87cd6 user: dan tags: trunk)
19:04
Merge trunk changes into this branch. (Closed-Leaf check-in: d805fc0c user: dan tags: wapptest)
19:03
Further tweaks to wapptest.tcl. Add the ability to run the extra (n)debug tests that releasetest.tcl runs. (check-in: ec9c4f6d user: dan tags: wapptest)
17:06
Remove the vfslog.c extension from the testfixture target in main.mk, as that extension has no TCL bindings and is inaccessible. (check-in: d71f8bbc user: drh tags: trunk)
16:54
Fix RBU so that it does not write rows that should be excluded into partial indexes (corrupting the database). (check-in: 31eb27f4 user: dan tags: trunk)
06:50
Fix the checksymbols target in Makefile.in. (check-in: 1956eb34 user: dan tags: wapptest)
2019-04-10
19:45
Have wapptest.tcl display the name, OS and architecture of the host. (check-in: c47e53b4 user: dan tags: wapptest)
18:56
Various fixes for the wapptest.tcl script. (check-in: cbf42365 user: dan tags: wapptest)
18:29
Update the list of OMIT options in the omittest.tcl script. (check-in: f294cfc1 user: drh tags: trunk)
13:24
Further refinement of the sqlite3VdbeMEmExpandBlob() fix of check-in [df58774e994bd] to prevent a reference to an unused variable - problem discovered by Valgrind. (check-in: 09435b57 user: drh tags: trunk)
12:02
Change the name of some internal testing interfaces to avoid a name conflict in AIX. (check-in: c1cae7e7 user: drh tags: trunk)
00:58
Do not place arbitrary restrictions on the length of the failure message for a uniqueness constraint. (check-in: 037da798 user: drh tags: trunk)
2019-04-09
21:37
New test case for SQLITE_TOOBIG errors. (check-in: 4c77fbbe user: drh tags: trunk)
21:32
Improved reporting of SQLITE_TOOBIG errors while parsing. (check-in: ea2d4b65 user: drh tags: trunk)
20:50
Fix a problem caused by a small SQLITE_LIMIT_LENGTH value and a CREATE TABLE with a very large name. (Closed-Leaf check-in: 9b5d4088 user: dan tags: toobig-fix)
19:53
Add test/wapptest.tcl, a wapp alternative to releasetest.tcl. (check-in: a4af0c2f user: dan tags: wapptest)
01:26
Use an unsigned integer to count free pages in btree.c:freePage2(). (check-in: 88204085 user: drh tags: trunk)
2019-04-07
18:21
Make the testcase() macro added in the previous check-in reachable for testing. (check-in: 80704a16 user: drh tags: trunk)
18:04
Fix a faulty assert() in the sqlite3VdbeMemExpandBlob() routine. (check-in: df58774e user: drh tags: trunk)
2019-04-06
15:38
Fix two assert() statements in fts5 that are only true if the database is not corrupt. (check-in: edb095a9 user: dan tags: trunk)
2019-04-05
21:17
Remove some stale references to the addopcodes.tcl script from documentation. (check-in: c0381b0b user: drh tags: trunk)
20:56
Eliminate the tool/addopcodes.tcl script. The purpose of that script was to keep the number of parser codes below 256 in order to save parser table space. But we have long since blown through that ceiling so the addopcodes.tcl script was just needless complexity. There is no longer any reason to keep it around. (check-in: d2728192 user: drh tags: trunk)
20:47
Add further tests so that veryquick.test covers all vdbe branches. (check-in: cbc67de5 user: dan tags: trunk)
17:22
Improved comment on the sqlite3FaultSim() function. No changes to code. (check-in: 08b29672 user: drh tags: trunk)
16:52
In the test_vfs.c VFS, if a Tcl xWrite script returns "SQLITE_OMIT", silently omit the write() call. (check-in: 8b5a621e user: dan tags: trunk)
16:38
Add the ability to override the new corruption detection logic of the previous checkin, in order to exercise downstream corruption detection during testing. (check-in: e859d318 user: drh tags: trunk)
15:44
In the xfer-optimization, do early detection of when the source and destination index share the same btree, to avoid a long delay prior to reporting the database corruption. (check-in: af1e5873 user: drh tags: trunk)
2019-04-04
22:05
Add the vtab enable/disable options to the sqlite3_db_config TCL command in the testfixture. (Leaf check-in: c7052428 user: drh tags: disable-vtab)
21:40
Merge all the latest changes and enhancements from trunk. (check-in: 521d5186 user: drh tags: apple-osx)
20:55
Add further test cases to improve VDBE branch coverage. (check-in: 51a95e52 user: dan tags: trunk)
20:21
Provide a DBCONFIG to enable or disable virtual tables that match a LIKE pattern. (check-in: b40a4edc user: drh tags: disable-vtab)
19:21
Fix a typo in the documentation for sqlite3_value_frombind(). Also add a new hyperlink to that same documentation. No code changes. (check-in: bf3cd936 user: drh tags: trunk)
18:20
Minor fixes to requirements marks. (check-in: 02ebc60b user: drh tags: trunk)
17:58
Add test cases to improve coverage of VDBE branches. Still some to go. (check-in: 4cef609d user: dan tags: trunk)
17:39
Correctly initialize the loadable extension thunk. (check-in: 4fca46de user: drh tags: trunk)
15:25
Simplification of the recent VACUUM changes that make the code more like what it was before the change. Also, make the VACUUM command a no-inline procedure to work around a performance regression. (check-in: 9cac5ac1 user: drh tags: trunk)
14:36
Fix an incorrect comment on a test case for rowid renumbering in VACUUM. (check-in: 0d293fb4 user: drh tags: trunk)
14:00
Only preserve rowid values for VACUUM INTO. Keep the legacy behavior of renumbering rowids for ordinary VACUUM. (check-in: 13a0ea64 user: drh tags: trunk)
2019-04-03
17:48
Add a defense-in-depth NEVER() test to the WAL cleanup code. (check-in: 8d3af201 user: drh tags: trunk)
16:27
Fix a couple of problems with "RANGE BETWEEN <expr> PRECEDING AND <expr> PRECEDING" frames. (check-in: 39225cc7 user: dan tags: trunk)
2019-04-02
18:12
Small optimizations to the grammar for window functions save about 120 bytes of space in the parser tables. (check-in: bce01d95 user: drh tags: trunk)
17:45
Use a separate bit on db->dbOptFlags to disable the xInverse optimization on window functions, rather than reusing the query-flattener disable bit. (check-in: bc0fb1c3 user: drh tags: trunk)
17:45
Including the phrase EXCLUDE NO OTHERS in the frame-spec of a window function (which is the default setting for EXCLUDE) silently disables the xInverse optimization. This is a feature, but we will keep it undocumented for now in case we later decide it is a bad idea. (check-in: 10aedce3 user: drh tags: trunk)
13:10
Put the list of keywords in mkkeywordhash.c into alphabetical order. (check-in: ac98b23b user: drh tags: trunk)
01:00
Merge fixes from trunk. (check-in: 20372906 user: drh tags: apple-osx)
00:56
Make sure the MEM_FromBind bit inthe Mem.flags field is not included in the MEM_TypeMask. This critical changes was omitted from the previous two check-ins by mistake, and so those check-ins are not fully functional. (check-in: f7ba2daf user: drh tags: trunk)
00:48
Add new APIs to the extension loading mechanism. (check-in: 6f122faf user: drh tags: trunk)
00:34
Merge enhancements from trunk. (check-in: 0b35aebb user: drh tags: apple-osx)
00:28
Add the sqlite3_value_frombind() interface. Use that interface to improve fts3_tokenizer(). (check-in: b3f2c320 user: drh tags: trunk)
2019-04-01
20:57
Performance improvement on the OP_Variable opcode. (Closed-Leaf check-in: 1dc7993b user: drh tags: value_frombind)
19:42
Improvements to the sqlite3ExprImpliesNonNullRow() theorem prover. (check-in: 3fde6276 user: drh tags: trunk)
18:43
Add a test case to cover a missed VDBE branch generated by window.c. (check-in: b36813d6 user: dan tags: trunk)
17:24
If the library is built with SQLITE_VDBE_COVERAGE defined, have the Tcl tests generate a vdbe coverage report in file testdir/vdbe_coverage.txt. (check-in: f0ed7146 user: dan tags: trunk)
16:23
Frame range comparisons can never be NULL because the values will have been checked for NULL prior to the test. (check-in: fa37cf9a user: drh tags: trunk)
15:55
Mark rowid-comparison opcodes as never-null for VDBE coverage tracking purposes. (check-in: a69bb4f2 user: drh tags: trunk)
14:30
Improved VDBE branch coverage in the run-time frame-spec error detection logic of window functions. (check-in: f56d305a user: drh tags: trunk)
14:01
Improved comments on the VDBE branch coverage testing logic. Fix the VDBE branch coverage measurement on the OP_MustBeInt opcode. (check-in: 8681750e user: drh tags: trunk)
13:06
Fix a defect in the VDBE branch coverage testing logic. (check-in: 1fcf3307 user: drh tags: trunk)
03:07
Fix harmless compiler warnings seen with MSVC. (check-in: 6cf8b18e user: mistachkin tags: trunk)
2019-03-31
21:09
Early detection of too many columns in an index avoid a possible 16-bit signed integer overflow. (check-in: 8af0caeb user: drh tags: trunk)
18:17
Add some missing VdbeCoverage() macros. (check-in: d03b6113 user: drh tags: trunk)
2019-03-30
20:43
Improvements to VdbeCoverage macros. (check-in: 10ee9e33 user: drh tags: trunk)
20:37
Fix issues with the previous check-in and add more VDBE branch coverage testing macros. (Closed-Leaf check-in: b5f72f10 user: drh tags: oops)
20:10
Enhanced VdbeCoverage() macros in the new windows function code. Later: This check-in causes an assertion fault. (check-in: f24066f8 user: drh tags: oops)
19:17
Add a call to sqlite3FaultSim(410) inside of btreeRestoreCursorPosition() to simplify testing of error scenarios. (check-in: bb643bac user: drh tags: trunk)
18:39
The defragmentPage() routine detects corruption in the first-free-slot fields at offset 1 in the header and throws an error, rather than asserting. (check-in: fb125bd3 user: drh tags: trunk)
17:30
Add the blobio.c extension module implementing readblob() and writeblob(). Experimental. (check-in: e3fde56d user: drh tags: trunk)
17:07
Add an extra IO-error test to windowfault.test. (check-in: 5b8c44cd user: dan tags: trunk)
2019-03-29
17:26
Change the fts3_tokenizer() function to always return the pointer as a BLOB as long as the first argument is a bound parameter, regardless of the SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER setting. (check-in: 27160df7 user: drh tags: value_frombind)
15:21
Remove the unused P5 flag from the OP_Rewind opcode. (check-in: c2edbf3b user: drh tags: trunk)
13:17
Fix a fairly obscure problem causing the planner to sometimes choose sub-optimal plans for a query with a single virtual table in the FROM clause, and at least one IN(...) constraint in the WHERE clause. (check-in: f5752517 user: dan tags: trunk)
11:48
Fix typos in the comments of the sessions extension, one of which affects the generated documentation. No code changes. (check-in: 040d5d51 user: drh tags: trunk)
11:39
The two-argument version of fts3_tokenizer() works regardless of the value of SQLITE_DBCONFIG_ENABLE_FT3_TOKENIZER as long as the second argument is a bind parameter. (check-in: ab76e3a9 user: drh tags: value_frombind)
11:13
Initial implementation of the sqlite3_value_frombind() interface. (check-in: 98da62df user: drh tags: value_frombind)
01:15
Recover a some of the performance lost by window function alias fix two check-ins back. (check-in: 965cbcea user: drh tags: trunk)