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107 check-ins using file src/shell.c.in version 9ebc74e4

2021-02-17
20:08
Fix various issues with the changes on this branch. Add test cases for the same. (check-in: 10538ec6 user: dan tags: alter-table-drop-column)
2021-02-16
20:43
Add experimental implementation of ALTER TABLE DROP COLUMN. Only some cases work so far. (check-in: f0217937 user: dan tags: alter-table-drop-column)
20:32
Simplification to the resolveAlias() routine. (check-in: 00bead39 user: drh tags: trunk)
20:01
New SELECTTRACE macros more clearly deliniate when the query planner is invoked in the middle of PRAGMA vdbe_addoptrace output. (check-in: 7c03ce49 user: drh tags: trunk)
19:29
Remove unnecessarily complexity from sqlite3WithReleaseByParse(). Improved TreeView output for the enhanced CTE structures. This code still does not work 100%. I'm saving my place in order to (maybe) come back to it later. (check-in: 30bb18b4 user: drh tags: as-materialize)
16:32
Trying to get the new AS MATERIALIZE syntax of CTEs to work. There are still performance and memory management issues. This is a WIP check-in. (check-in: bf0fd9b2 user: drh tags: as-materialize)
00:48
Change the syntax from "GENERATED AS" to "AS MATERIALIZED" so as to match the syntax of PostgreSQL 12+. (Closed-Leaf check-in: 78dcddd9 user: drh tags: with-generated-as)
2021-02-15
17:51
Merge the LIKE operator fix from trunk. (check-in: 8c861878 user: drh tags: with-generated-as)
17:02
Fix an issue with the LIKE operator when it includes the "ESCAPE '_'" clause. Ticket [c0aeea67d58ae0fd]. (check-in: 27d41179 user: drh tags: trunk)
14:55
Merge minor fixes from trunk. (check-in: d876b287 user: drh tags: with-generated-as)
14:32
Add tests for sqlite3_column_count(). (check-in: 7cc65ae5 user: dan tags: trunk)
13:17
Ensure that the ALTER TABLE statements return 0 for sqlite3_column_count(). (check-in: 29c1932a user: drh tags: trunk)
11:14
Fix an error in the test case fix in [ecd71203]. (check-in: 5411bfa4 user: dan tags: trunk)
2021-02-13
23:46
If the GENERATED keyword occurs before the AS keyword in a common table expression (CTE) definition, then that CTE becomes an "optimization barrier". For now, that means the CTE is always materialized. It also means that query flattener or pushdown optimizations that cross the CTE boundary are omitted. (check-in: 186ec18b user: drh tags: with-generated-as)
18:14
Fix incorrect test name labels in the select1.test script. (check-in: 179c79ea user: drh tags: trunk)
16:39
Avoid manifesting a CTE (or other view) multiple times when it is possible to reuse the first manifestation. (check-in: 9692f510 user: drh tags: trunk)
14:26
Fix a problem in the unreleased union-all flattening enhancement (check-in: e4f8a79f user: dan tags: trunk)
2021-02-12
21:22
Fix a test case to account for the fact that different versions of OpenBSD behave differently when a program tries to read() from a file-descriptor open on a directory. (check-in: ecd71203 user: dan tags: trunk)
21:07
Parsing of DML statements in a WITH clause. But at this point, it just generates an error about "not yet supported". (Leaf check-in: 964ff68d user: drh tags: dml-in-cte)
11:37
Ensure all RBU tests are run as part of release testing. (check-in: a18dc08b user: dan tags: trunk)
2021-02-10
20:00
Fix a longstanding problem causing an RBU vacuum to omit releasing some locks before finishing. (check-in: 66c07a07 user: dan tags: trunk)
19:49
Remove an assert() added by the previous commit that is sometimes false. (Closed-Leaf check-in: fb36ac4d user: dan tags: shm-lock-fix)
19:40
Fix a longstanding problem causing an RBU vacuum to omit releasing some locks before finishing. (check-in: cb5bdf82 user: dan tags: shm-lock-fix)
17:31
In RBU, avoid passing VFS xShmLock calls through to the underlying VFS in cases where xShmMap calls may not be. This fixes a bad interaction with ZipVFS. (check-in: bd1e9e0a user: dan tags: trunk)
2021-02-08
15:56
Correctly detect correlated subqueries when resolving names in RETURNING clauses. (check-in: b43cfa04 user: drh tags: trunk)
13:41
Improved name resolution for references to a table begin modified from within a subquery in the RETURNING clause. (check-in: 799d205b user: drh tags: trunk)
2021-02-07
23:28
Do not allow RETURNING in the DML statements of a trigger. (check-in: 7a8fe646 user: drh tags: trunk)
12:59
Fix harmless compiler warnings. (check-in: 5f8bf995 user: drh tags: trunk)
2021-02-06
14:56
Remove an ALWAYS() and NEVER() in the authorizer that become reachable as of [078dbff04a95a001]. Test case for coverage in TH3. (check-in: b469327e user: drh tags: trunk)
14:37
Fix the OSSFuzz-discovered shift problem from two days ago. This patch was omitted from [078dbff04a95a001] apparently because I made the edit to "sqlite3.c" rather than "resolve.c" where it belongs. (check-in: 864772ff user: drh tags: trunk)
2021-02-05
17:34
Remove unreachable code. Fix a shift UB problem introduced yesterday and discovered by OSSFuzz. (check-in: 078dbff0 user: drh tags: trunk)
2021-02-04
23:20
Change the RETURNING algorithm so that outputs accumulate in an ephemeral table until all modifications have been completed, and only then do results start being returned. This should help prevent problems with interleaved sqlite3_step() calls on two separate DML statements. It also seems to be closer to how PostgreSQL works, which might prevent compatibility problems. (check-in: c4615eb2 user: drh tags: trunk)
22:59
Remove dead code. Fix RETURNING for INSERT into a virtual table. (Closed-Leaf check-in: dbfa3869 user: drh tags: returning-manifested)
21:19
Initial commit (Leaf check-in: e73dbce8 user: shearer tags: selective-debug)
21:17
Fix an issue with RETURNING from UPSERT. (check-in: 757b74ba user: drh tags: returning-manifested)
20:52
Snapshot. New design appears to work on a simple test case. (check-in: 8a65fbee user: drh tags: returning-manifested)
17:29
Preliminary changes for a new implementation of RETURNING that captures all results in a buffer and plays them all back after the DML statement completes. This avoids problems with interleaved DML statements. This particular check-in is a non-functional work in progress. (check-in: 04b77d63 user: drh tags: returning-manifested)
13:52
Add NEVER() to a branch that check-in [5d54d9fd40638138] apparently made unreachable. (check-in: 5c8e6296 user: drh tags: trunk)
13:44
Performance optimization in sqlite3FinishCoding(). (check-in: 0f34f241 user: drh tags: trunk)
11:14
Work toward handling interleaved RETURNING statements. Trunk does not handle that case correctly. This branch is a partial implementation of ideas that might, however. (Closed-Leaf check-in: e1eb6213 user: drh tags: interleaved-returning)
2021-02-03
19:38
Corrections to the 'filepath_normalize' test suite helper procedure. (check-in: 32f4d044 user: mistachkin tags: trunk)
18:32
Change the name of Vdbe.magic to Vdbe.iVdbeMagic to disambiguate with sqlite3.magic. (check-in: 6b29e549 user: drh tags: trunk)
14:20
Avoid doing any foreign-key constraint related processing for an UPDATE statement that does not modify any columns that are part of FK constraints, even if the table has a self-referencing FK. (check-in: 7f3b036e user: dan tags: trunk)
13:20
Fix a harmless compiler warning. (check-in: 1eb69c64 user: drh tags: trunk)
13:08
Add support for the RETURNING clause following PostgreSQL syntax. Also change the behavior of SQLITE_DBCONFIG_ENABLE_TRIGGER so that TEMP triggers are always allowed, regardless of the setting. (check-in: 416c898b user: drh tags: trunk)
12:35
Fix an assert() that might be off-by-one in the case of a prior errors in the parse. (check-in: 06b15b17 user: drh tags: trunk)
00:55
Modify the SQLITE_DBCONFIG_ENABLE_TRIGGER setting so that it only disables main-schema triggers and allows TEMP trigger to continue operating. This is safe, since only the application (not an attacker) can add TEMP triggers. It will also all us to disengage SQLITE_DBCONFIG_ENABLE_TRIGGER on Fossil databases since Fossil has no main-schema triggers but does use TEMP triggers. (Closed-Leaf check-in: a10c5a25 user: drh tags: returning)
00:05
Load enhancements from trunk into the returning branch. (check-in: b84c7f60 user: drh tags: returning)
2021-02-02
20:46
Do not allow aggregates in a RETURNING clause. Fix a memory leak that occurs when window functions are used in a RETURNING clause. (check-in: 2e9bd94b user: drh tags: returning)
20:41
Modify the sessions extension to use more efficient SQL when applying a changeset or patchset. (check-in: e4ccfac0 user: dan tags: trunk)
12:01
Report an error if RETURNING is used for DELETE or UPDATE of a virtual table. (check-in: bd5dee84 user: drh tags: returning)
00:16
Allow the RETURNING trigger to exist for virtual tables. (check-in: 2f244ab4 user: drh tags: returning)
2021-02-01
21:26
Add a few test cases for RETURNING together with UPDATE/DELETE LIMIT. (check-in: 7611c77d user: drh tags: returning)
12:39
Improved corrupt database detection in balance_nonroot(). (check-in: 5d54d9fd user: drh tags: trunk)
01:57
Modify RETURNING so that it does not return changes implemented by cascading foreign keys or by triggers. (check-in: 6e62470a user: drh tags: returning)
2021-01-31
16:45
Mark an unreachable branch as ALWAYS(). (check-in: cb8b797a user: drh tags: returning)
15:50
New opcode OP_ChngCntRow used to output the result of PRAGMA change_count. Only this new opcode, and not OP_ResultRow, checks for foreign key errors. Faster performance, and now also works with RETURNING. (check-in: 154fc2b1 user: drh tags: returning)
12:41
When setting the number of result columns in a RETURNING trigger, be sure to set that value in the top-level bytecode program, not in the immediate caller of the trigger. (check-in: 1f1ce7ce user: drh tags: returning)
2021-01-30
21:55
Improved comments on the new code. (check-in: a38f0c1d user: drh tags: returning)
16:16
Add an ALWAYS() to an unreachable branch. (check-in: 6bb6de42 user: drh tags: returning)
14:17
Change the OP_ResultRow opcode so that it does not cancel pending statement transactions. (check-in: fea91e3a user: drh tags: returning)
12:07
Fix a obsolete assert() in the bytecode engine. Improved OOM detection in sqlite3AddReturning(). (check-in: 138b10d5 user: drh tags: returning)
03:06
Fix handling of an OOM condition in sqlite3AddReturning(). (check-in: 52204cd7 user: drh tags: returning)
02:43
Fix a memory deallocation problem that comes up when doing a RETURNING query on a corrupt database. I think I fixed this before, but it got unfixed with stale editor content. (check-in: 02b1415e user: drh tags: returning)
02:34
Another attempt to get trigger selection correct for RETURNING triggers. (check-in: 1b8ed522 user: drh tags: returning)
02:22
When running the RETURNING trigger, if it is tagged as a DELETE trigger, do not use it as INSERT or UPDATE. (check-in: 3c7a6e04 user: drh tags: returning)
01:30
Test cases added. RETURNING works with UPSERT as does PG. (check-in: f5698f96 user: drh tags: returning)
2021-01-29
22:33
Better handling of errors in RETURNING due to corrupt database files. (check-in: 6aa2a058 user: drh tags: returning)
21:31
RETURNING works even if "PRAGMA count_changes=ON" is set. (check-in: a9122d97 user: drh tags: returning)
21:18
Allow "*" wildcards in the RETURNING clause. (check-in: b0e3ae30 user: drh tags: returning)
19:32
Working prototype. (check-in: b7ef4dc2 user: drh tags: returning)
16:20
Fix possible division-by-zero in the new log() SQL functions. Problemm discovered by OSSFuzz. (check-in: 1ffd321a user: drh tags: trunk)
14:22
Incorporate the sqlite3TriggerList() optimization from trunk. And move the pReturning field to the uninitialized area in the Parse object, to save memset() time. (check-in: 29fbaf0e user: drh tags: returning)
13:47
Performance optimization (and size reduction) in sqlite3TriggerList() for the common case where there are no TEMP triggers. (check-in: 0defaf73 user: drh tags: trunk)
2021-01-27
20:35
Merge recent enhancements from trunk. (check-in: 5fbcb208 user: drh tags: returning)
19:15
Fix an issue with IN operator optimization introduced by check-in [4a43430fd23f8835] and described by ticket [ee51301f316c09e9]. (check-in: 9dc7fc9f user: drh tags: trunk)
17:15
Ensure a cursor used by the SeekScan operator does not point to a valid row on the first iteration of the loop. Possible fix for [ee51301f316c09e]. (Closed-Leaf check-in: 390cf60a user: dan tags: fix-2d6e8400)
2021-01-25
21:24
Add an extra log message in the case of an SQLITE_CORRUPT_INDEX error. (check-in: 0571c241 user: drh tags: trunk)
2021-01-22
21:23
Enhance the query planner to enable it to use an index for IS NOT NULL constraints, even if STAT4 is not enabled. (check-in: 7b2a7c73 user: drh tags: trunk)
20:28
Merge fixes from trunk. Omit a conditional in sqlite3IsLikeFunction() that was made unreachable by this enhancement. (Closed-Leaf check-in: 0b42f9eb user: drh tags: isnotnull-opt)
2021-01-21
21:36
Do not allow VACUUM to resize the page_size to 512 if the reserve_byte value is 31 or greater. forum post e807885dc5. (check-in: d5ea75a0 user: drh tags: trunk)
20:42
Performance optimizations in exprAnalyze() (check-in: 6d60cf54 user: drh tags: isnotnull-opt)
17:54
Always enable the IS NOT NULL optimization, even if STAT4 is not enabled. (check-in: fc98218c user: drh tags: isnotnull-opt)
16:02
Fix a problem caused by using an SQL variable in an OVER clause within a trigger program. Edit: The problem appears to have existed ever since window functions landed on trunk (check-in [17198a1206e2fbc9]) on 2018-06-30, version 3.25.0. (check-in: 02264ab6 user: dan tags: trunk)
15:40
Fix a problem caused by using an SQL variable in an OVER clause within a trigger program. (Closed-Leaf check-in: 4f676466 user: dan tags: fix-over-trigger)
2021-01-20
23:01
Improvements to the auxiliary "main.mk" makefile so that it works better with multi-threaded builds. (check-in: d1873054 user: drh tags: trunk)
10:59
Add tests for sqlite3session_memory_used() interface. (check-in: 5596611f user: dan tags: trunk)
2021-01-18
19:28
Fix harmless compiler warnings seen with MSVC. (check-in: dc7938d2 user: mistachkin tags: trunk)
19:27
Update test helper procedure 'get_pwd' to handle the ComSpec environment variable being absent. (check-in: fe197955 user: mistachkin tags: trunk)
12:35
Enhance the query planner so that it is able to code EXISTS operators in the WHERE clause as if they were IN operators, when appropriate. (check-in: c1862abb user: drh tags: trunk)
00:11
More comments on the EXISTS-to-IN optimization logic. (Closed-Leaf check-in: 92cc2909 user: drh tags: exists-to-in)
2021-01-17
00:13
Minor simplification of the EXISTS-to-IN logic. (check-in: cac90a9f user: drh tags: exists-to-in)
2021-01-16
20:22
Improved handling of vector equalities in the EXISTS-to-IN translator. (check-in: ef49ee4a user: drh tags: exists-to-in)
18:55
Give the EXISTS-to-IN optimization the ability to handle some cases that involve vector comparisons, instead of throwing a mysterious error in those cases. (check-in: 87e78a19 user: drh tags: exists-to-in)
18:22
Add debugging output about the EXISTS-to-IN optimization when the ".wheretrace" flag has the 0x20 bit set. (check-in: 0dad5ce3 user: drh tags: exists-to-in)
12:15
Fix a hyperlink in the Lemon documentation. (check-in: 2ffb2ffa user: drh tags: trunk)
2021-01-15
17:51
Add OOM injection tests for new code on this branch. (check-in: 9a181dba user: dan tags: exists-to-in)
16:37
Update header comments for routines added by this branch. (check-in: 950030d6 user: dan tags: exists-to-in)
15:32
Ensure the EXISTS->IN transformation preserves the collation sequence of the comparison operation. (check-in: a373baae user: dan tags: exists-to-in)
15:21
Fix a potential NULL pointer dereference following OOM. (check-in: 8ce3cb90 user: drh tags: exists-to-in)
15:17
Add a new optimizer disabling bit to close off the exists-to-in optimization, for testing purposes. (check-in: a80c9a07 user: drh tags: exists-to-in)
14:25
Small performance improvement in the EXISTS-to-IN translator for the common case where the EXISTS operator is not found in the WHERE clause. (check-in: dcb7772d user: drh tags: exists-to-in)
14:15
Merge the latest trunk enhancements into the exists-to-in branch. (check-in: 13c4c908 user: drh tags: exists-to-in)
2021-01-14
20:57
Improvements to the min/max optimization. Fix for a performance regression introduced at [b8ba2f17f938c035] reported by forum post 4050026ab8 (check-in: 249a71cc user: drh tags: trunk)
00:53
The early-out of the inner loop on the min/max optimization was overly aggressive for the cases where there is a join and outer loops contain IN operators. Fix this. Test case in TH3. (Closed-Leaf check-in: ccd3bae1 user: drh tags: minmax-opt-exp)
2021-01-13
21:05
Fix a harmless compiler warning. (check-in: 83ec01e3 user: drh tags: minmax-opt-exp)
19:28
Expand the number of optimization-disable bits from 16 to 32. Use one of the new bits to disable the min/max optimization, so that we can more easily verify that we get the same answer both with and within that optimization. (check-in: fd0c9a12 user: drh tags: minmax-opt-exp)