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230 check-ins using file src/wherecode.c version 0b09abfc

2022-08-01
13:17
Bump the version number up to 3.39.3. (check-in: d0f7f22a user: drh tags: branch-3.39)
13:15
In the xUpdate method of the GeoPoly virtual table, make sure that the number of updated columns does not exceed the underlying implementation, even if the virtual table object records an excess number of column in the nAux field due to table constraints in the table definition. Fix for the problem reported by forum post a096ab7d96bb057a. (check-in: a8ae7216 user: drh tags: branch-3.39)
2022-07-25
16:06
Fix an error in the aggregate query LEFT JOIN flattening optimization from [2cf373b10c9bc4cb] and further enhance that optimization so that it works even if there is a GROUP BY clause. (check-in: b52393ac user: drh tags: trunk)
15:54
Allow subqueries on the right-hand side of a LEFT JOIN to be flattened even if they contain a GROUP BY clause. (Closed-Leaf check-in: 816da9a8 user: drh tags: flatten-left-join)
14:05
TK_IF_NULL_ROW expressions must be accumulated in the same way as TK_COLUMN expressions in an aggregate query. Proposed fix for the problem identifyed by dbsqlfuzz 8e17857db2c5a9294c975123ac807156a6559f13. (check-in: 40d08807 user: drh tags: flatten-left-join)
11:19
If the LHS of a LEFT JOIN is flattened into an aggregate parent query, avoid executing OP_IfNullRow on an unopened cursor by disallowing the index-only optimization. (Later:) Does not work if automatic indexes are disabled. (Closed-Leaf check-in: dbe522b0 user: dan tags: nonworking-flatten-left-join)
11:04
Reduce a timeout in walsetlk.test from 2000ms to 1100ms so that the test runs a bit faster. (check-in: 836fa097 user: dan tags: trunk)
2022-07-23
12:51
Simplifications to sqlite3FinishCoding() for a small size reduction and performance increase. (check-in: a995614b user: drh tags: trunk)
00:53
Remove a branch that is no longer reachable due to the previous check-in. (check-in: 8b4d1b93 user: drh tags: trunk)
00:44
Use sqlite3ParserAddCleanup() rather than pParse->pConstExpr to implement sqlite3ExprDeferredDelete(). This is a better solution than check-in [c538d07535092722]. (check-in: 2a6f6971 user: drh tags: trunk)
2022-07-22
20:48
Updates to the 'vtshim' extension. (Leaf check-in: 163c6cdf user: mistachkin tags: xShadowName2)
20:24
Add experimental 'xShadowName2' method for virtual table modules. (check-in: 57beb700 user: mistachkin tags: xShadowName2)
19:28
Omit the EP_MemToken flag that was made obsolete by [e1f1cfe7f4387b60], for a size reduction and performance increase. (check-in: 28934a9d user: drh tags: trunk)
18:25
In a TK_BLOB Expr node, the Expr.zToken might not be a well-formed BLOB literal if there has been a prior OOM. dbsqlfuzz 23871e5805d6c45b392f9b7aa1e8a2b98f3c27cd. (check-in: c538d075 user: drh tags: trunk)
14:52
Update the documentation for SQLITE_OPEN_NOFOLLOW to state more clearly that nothing in the database path is allowed to be a symbolic link. (check-in: de922269 user: drh tags: trunk)
2022-07-21
18:37
Fix harmless compiler warning seen with MSVC. (check-in: 648172de user: mistachkin tags: trunk)
16:07
Merge the fixes from branch-3.39 into the reuse-schema branch. (Leaf check-in: 578538ba user: drh tags: reuse-schema-3.39)
15:24
Version 3.39.2 (check-in: 698edb77 user: drh tags: release, branch-3.39, version-3.39.2)
12:26
In the query planner, restore the former aggressiveness in reordering of FROM clause terms that existed prior to version 3.39.0 for queries that contain no RIGHT or FULL JOINs. (check-in: 9141e873 user: drh tags: branch-3.39)
2022-07-20
20:36
Make use of the sqlite3ExprDeferredDelete() interface in the previous check-in, and in another place where it might be helpful. (check-in: 22f90e96 user: drh tags: trunk)
17:01
Simplify the logic that converts the "1" expression in "ORDER BY 1" into a copy of the expression that defines the first output column. (check-in: 44993591 user: drh tags: branch-3.39)
16:42
Simplify the logic that converts the "1" expression in "ORDER BY 1" into a copy of the expression that defines the first output column. (check-in: e1f1cfe7 user: drh tags: trunk)
10:09
Merged in trunk. (Leaf check-in: d662796c user: stephan tags: wasm-cleanups)
2022-07-19
21:12
Improve accuracy of julian day milliseconds calculation. (check-in: e5e93118 user: larrybr tags: trunk)
2022-07-18
19:32
Remove a few unsuitable scripts from the "veryquick" test suite. Also have every second testrunner.tcl process favour running test scripts that contain text like "testrunner: slow" before any others. (check-in: 22d280a5 user: dan tags: trunk)
18:13
Add the "testrunner" makefile target. (check-in: 954c6593 user: drh tags: trunk)
15:27
Increase the size of loop variables in the printf() implementation to avoid harmless compiler warnings. (check-in: 26db4fc2 user: drh tags: branch-3.39)
15:02
Increase the size of loop variables in the printf() implementation to avoid harmless compiler warnings. (check-in: aab790a1 user: drh tags: trunk)
13:55
Enhance the REGEXP extension so that it will accept the start-of-input mark ("^") in the middle of parentheses. Forum post 0d6a9160f81ef1a8. (check-in: ed8a8ebd user: drh tags: trunk)
13:10
Fix a problem in the REGEXP extension for the {M,N} construct where M is zero. See forum post 8694e55a2c29963c for more information. (check-in: af15bb75 user: drh tags: trunk)
11:44
Enhance the ext/misc/regexp.c code so that when it is compiled with SQLITE_DEBUG, a new function named regexp_bytecode() is available that prints out the compiled NFA as human-readable text, for debugging purposes. (check-in: cb5c0897 user: drh tags: trunk)
2022-07-16
18:08
Fixes for the generated "mallocs.tcl" and "leaks.tcl" scripts generated by running tcl tests with the --malloctrace=1 option. (check-in: 449799e2 user: dan tags: trunk)
2022-07-15
20:39
In the query planner, restore the former aggressiveness in reordering of FROM clause terms that existed prior to version 3.39.0 for queries that contain no RIGHT or FULL JOINs. (check-in: 92d60b64 user: drh tags: trunk)
15:24
Fix harmless compiler warnings seen with MSVC. (check-in: 2be8fa15 user: mistachkin tags: branch-3.39)
15:11
Fix a memory leak in fts3 that could occur when processing a corrupt database. (check-in: 48f323b9 user: dan tags: branch-3.39)
15:08
Fix a memory leak in fts3 that could occur when processing a corrupt database. (check-in: d74f6f6d user: dan tags: trunk)
12:34
Fix the whereKeyStats() routine (part of STAT4 processing only) so that it is able to cope with row-value comparisons against the primary key index of a WITHOUT ROWID table. Forum post 3607259d3c. (check-in: 2a6f7618 user: drh tags: branch-3.39)
12:16
Fix the whereKeyStats() routine (part of STAT4 processing only) so that it is able to cope with row-value comparisons against the primary key index of a WITHOUT ROWID table. Forum post 3607259d3c. (check-in: 0620e419 user: drh tags: trunk)
12:07
Update some faulty assert() statements in fts3. (check-in: 958d104b user: dan tags: branch-3.39)
11:34
Update some faulty assert() statements in fts3. (check-in: b072851b user: dan tags: trunk)
2022-07-14
21:17
Ensure all testrunner.tcl processes use the same pending-byte value when accessing testrunner.db. Otherwise locking doesn't work and the db is corrupted. (check-in: b6522565 user: dan tags: trunk)
18:09
Update testrunner.tcl so that it can run the test suites defined in permutation.test. (check-in: 15ce937e user: dan tags: trunk)
01:54
Bump the version number up to 3.39.2. (check-in: c4dbcb28 user: drh tags: branch-3.39)
01:49
When applying the omit-ORDER-BY optimization, defer deleting the AST of the deleted ORDER BY clause until after code generation ends. (check-in: b88d6c4b user: drh tags: branch-3.39)
01:48
When applying the omit-ORDER-BY optimization, defer deleting the AST of the deleted ORDER BY clause until after code generation ends. (check-in: f22f95b8 user: drh tags: trunk)
2022-07-13
21:28
Fix testrunner.tcl so that it can detect the number of logical cores on osx. (check-in: 14918f28 user: dan tags: trunk)
21:10
Minor change to help message in testrunner.tcl. (check-in: e4f9cb01 user: dan tags: trunk)
21:02
Add new script test/testrunner.tcl. For running a set of test scripts using multiple processes. (check-in: 0122e93d user: dan tags: trunk)
20:26
Fix a problem preventing "testrunnter.tcl all" from working. (Leaf check-in: 0ed1e83c user: dan tags: testrunner)
19:57
Update testrunner.tcl to allow the user to specify which tests to run on the command line. (check-in: 900febcf user: dan tags: testrunner)
19:41
Version 3.39.1 (check-in: 7c16541a user: drh tags: release, branch-3.39, version-3.39.1)
17:46
Fix testrunner.tcl so that it checks for memory leaks. (check-in: 106f6724 user: dan tags: testrunner)
16:06
The query flattener should not run if the subquery is a compound that contains a RIGHT JOIN in any arm and the subquery is not the first element of the outer query. Otherwise, prior elements of the outer query will not have the JT_LTORJ flag set. Fix for the problem reported in forum post 174afeae5734d42d. (check-in: cf9ed7f2 user: drh tags: branch-3.39)
15:52
The query flattener should not run if the subquery is a compound that contains a RIGHT JOIN in any arm and the subquery is not the first element of the outer query. Otherwise, prior elements of the outer query will not have the JT_LTORJ flag set. Fix for the problem reported in forum post 174afeae5734d42d. (check-in: 274e244c user: drh tags: trunk)
11:27
Fix test case error messages so that they work with after the removal of the unnecessary zErrMsg clearing from [44d77a7f807f5dc3]. (check-in: 7b167b87 user: drh tags: branch-3.39)
2022-07-12
20:31
Add test/testrunner.tcl, an experimental script for distributing the work of veryquick.test between multiple processes. (check-in: ef229cbb user: dan tags: testrunner)
15:53
Renamed the SQLITE_SHELL_WASM_WEB_MODE to SQLITE_SHELL_FIDDLE, which seems to be more in line with project convensions and indicates that that flag is only intended for /fiddle mode, as opposed to arbitrary wasm-on-the-web use. (check-in: d1d019bf user: stephan tags: trunk)
15:17
Fix another test case error message similar to those fixed in [b3d6b3c3]. (check-in: 6d0f6772 user: dan tags: trunk)
15:12
Update makefiles to fix building the non-amalgamation testfixture with SQLITE_DEBUG. (check-in: 1ca70564 user: dan tags: branch-3.39)
15:10
Update makefiles to fix building the non-amalgamation testfixture with SQLITE_DEBUG. (check-in: d9c4a9d0 user: dan tags: trunk)
10:46
Fix a bug in wapptest.tcl introduced by [51255bad4c1fb607]. (check-in: b26d097e user: drh tags: trunk)
09:40
Renamed SQLITE_SHELL_WASM_MODE to SQLITE_SHELL_WASM_WEB_MODE and no longer automatically enable it if __EMSCRIPTEN__ is defined, in order to facilitate using Emscripten to build the shell for CLI-based WASM runtimes (which cannot make use of the web-specific user input changes). The fiddle build now explicitly passes the new flag on at compile-time. (check-in: ee059ad5 user: stephan tags: trunk)
07:13
Back out the pager performance enhancement at [a1c090e08139f99d3], because it turns out we should never allow a zero key into the pcache interface according to the design specs, even if that page is immediately released without ever being used. (check-in: ec96293e user: drh tags: trunk)
2022-07-11
22:20
Add the --config option to wapptest.tcl. The argument is a glob pattern. All configurations must match the glob pattern in order to run. The default value is "*". (check-in: 51255bad user: drh tags: trunk)
21:40
Update the expected error messages in some OOM test cases to account for [44d77a7f807]. (check-in: b3d6b3c3 user: dan tags: trunk)
19:48
Use 64-bit memory allocation APIs in the sqlite_stmt virtual table, to avoid harmless compiler warnings. (check-in: 4c40b38c user: drh tags: branch-3.39)
19:47
Use 64-bit memory allocation APIs in the sqlite_stmt virtual table, to avoid harmless compiler warnings. (check-in: afb9e60e user: drh tags: trunk)
19:29
Fix harmless compiler warnings. (check-in: 9931bb20 user: drh tags: branch-3.39)
19:12
In the sqlite_stmt extension, store the result of strlen() in a 64-bit integer to avoid a compiler warning, even though we know that the length will always fit comfortably in 32 bits. (check-in: 3fe19452 user: drh tags: trunk)
18:26
Fix harmless compiler warnings about unused debugging functions in treeview.c. (check-in: 4d6f9077 user: drh tags: trunk)
18:11
Back out the optimization at [1a8c2e54375ee2cf7] because there are some cases where it does not work. (check-in: fe39c8d5 user: drh tags: trunk)
14:44
Increase the version number to 3.39.1. (check-in: 88b1b032 user: drh tags: branch-3.39)
14:43
Ensure that the Parse.nErr flag is set following an SQLITE_TOOBIG error on a nested parse. Fix for the problem identified by forum post d5a82ba9eedee30c. Also, remove unnecessary clearing of the Parse.zErrMsg field following a nested parse. (check-in: eaef7b71 user: drh tags: branch-3.39)
14:39
Fix a problem in fts3 to do with deferred tokens and OR expressions. (check-in: bbe999e3 user: drh tags: branch-3.39)
14:36
Ensure that the Parse.nErr flag is set following an SQLITE_TOOBIG error on a nested parse. Fix for the problem identified by forum post d5a82ba9eedee30c. Also, remove unnecessary clearing of the Parse.zErrMsg field following a nested parse. (check-in: 44d77a7f user: drh tags: trunk)
14:26
Fix a problem in fts3 to do with deferred tokens and OR expressions. (check-in: d0bfe5c5 user: dan tags: trunk)
2022-07-10
21:12
When an OOM occurs and sets the Parse.nErr value, also set the Parse.nErr value for all outer Parse objects. dbsqlfuzz d33f60aaa67733aa700cd69dacf8e0e23a327a29 (check-in: 9a494d25 user: drh tags: trunk)
2022-07-08
20:03
Performance optimizations in the WHERE clause processing of the query planner. (check-in: 50c8e8de user: drh tags: trunk)
18:23
Omit an unnecessary structure initialization in whereLoopAddAll(), replacing it with an assert() to show that the initialization has already occurred, for a small performance increase and size reduction. (check-in: 27be9e96 user: drh tags: trunk)
17:57
Size reduction and performance optimization in whereLoopAddBtreeIndex(). (check-in: 64d2312c user: drh tags: trunk)
16:56
In wherePathSolver(), defer initializing variables until they are actually needed, in case they are not needed. This gives a small performance increase. (check-in: 6f28a965 user: drh tags: trunk)
15:06
Upgrade the TEA build system used to build the Tcl package. (check-in: ace65da8 user: dan tags: trunk)
13:57
Fix typo in autoconf/tea/win/makefile.vc. (Closed-Leaf check-in: 094b2aad user: dan tags: tea-upgrade)
11:55
Remove an obsolete statement from a comment. No changes to code. (check-in: 99afb3f4 user: drh tags: trunk)
11:21
Update options in the TEA package msvc makefile to match other builds. (check-in: d72e12b9 user: dan tags: tea-upgrade)
11:14
Update the build options used for the TEA package to match those used to build the binaries at download.html. (check-in: 9d6d9dba user: dan tags: tea-upgrade)
2022-07-07
22:59
Very small size reduction and performance increase in btree.c. (check-in: 9a7c031a user: drh tags: trunk)
21:04
Size reduction and performance increase in defragementPage() of btree.c. (check-in: 1b03f197 user: drh tags: trunk)
20:49
Upgrade the TEA build system in autoconf/tea/. To match tclconfig commit 20fe9e6f59 and Tcl Sample Extension be47fb0446. (check-in: 1531f739 user: dan tags: tea-upgrade)
20:29
Size reduction and performance increase in the pageFindSlot() routine of btree.c. (check-in: 5d247e38 user: drh tags: trunk)
20:11
Size reduction and performance increase in the freeSpace() routine of btree.c. (check-in: 7d7aed05 user: drh tags: trunk)
2022-07-06
23:50
Fix harmless compiler warnings seen with MSVC. (check-in: 61e2094a user: mistachkin tags: trunk)
15:44
Avoid ignoring the last line of a csv file if the final field is empty and there is no trailing CFLS. Also have the csv extension treat the last line of a file in the same way as any other line if it is short fields. (check-in: 587795d4 user: dan tags: trunk)
13:59
Avoid dropping error codes in the xBegin() method of virtual table sqlite_dbpage. (check-in: 570e2bce user: dan tags: trunk)
2022-07-05
19:56
Fix for builds with both SQLITE_DEBUG and SQLITE_OMIT_WINDOWFUNC defined. (check-in: dfe46de2 user: dan tags: branch-3.39)
19:53
Fix for builds with both SQLITE_DEBUG and SQLITE_OMIT_WINDOWFUNC defined. (check-in: 77916947 user: dan tags: trunk)
17:49
Fix a problem in the csv extension that was triggered when the very first field in the csv file is zero bytes in size. (check-in: b12ddabf user: dan tags: trunk)
10:40
Fix an assert() in btree to be more precise, as the previous form of that asser might fail due to recent performance optimizations. (check-in: 47749381 user: drh tags: trunk)
2022-07-04
15:14
Size reduction and performance optimization in sqlite3WalFindFrame(). (check-in: 1a8c2e54 user: drh tags: trunk)
09:41
In the getNormalPage() routine of pager.c, consolidate pgno error checking into a single spot for small size reduction and performance increase. (check-in: a1c090e0 user: drh tags: trunk)
2022-07-03
18:12
Enhance the REGEXP extension so that the end-of-input indicate ("$") is allowed to occur on one branch of an OR ("|"). Forum post 0107d5d40dd273e2, second issue. (check-in: 3c04d21e user: drh tags: trunk)
14:32
Fix the initial-prefix optimization for the REGEXP extension such that it works even if the prefix contains characters that require a 3-byte UTF8 encoding. This should fix the problem reported by forum post 96692f8ba5. (check-in: 7a32cccc user: drh tags: branch-3.39)
14:25
Fix the initial-prefix optimization for the REGEXP extension such that it works even if the prefix contains characters that require a 3-byte UTF8 encoding. This should fix the problem reported by forum post 96692f8ba5. (check-in: c94595a6 user: drh tags: trunk)
11:16
Improved comment on sqlite3VdbeSwap(). No changes to code. (check-in: 6a8e4fb7 user: drh tags: trunk)
11:12
Remove debugging code that has always been commented out. Cosmetic change. (check-in: b5406417 user: drh tags: trunk)
2022-07-01
21:03
Do not attempt the OP_Count optimization on queries with HAVING clauses. This fixes a problem exposed by [2cf373b10c9bc4cb]. (check-in: 566b7842 user: dan tags: trunk)
19:42
Performance improvement in resolveP2Values(). Save over 1 million CPU cycles by omitting the loop termination condition and exiting when the OP_Init (always the first opcode in any VDBE program) is encountered. (check-in: bb179140 user: drh tags: trunk)
12:09
In the sqlite_stmt virtual table, add two ALWAYS() macros on branches that have been come always true due to the [84a91c255e3d7772] optimization. REVISED: Dbsqlfuzz found a case where the ALWAYS() is false. (Closed-Leaf check-in: bf34eddb user: drh tags: mistake)
2022-06-30
22:46
Small performance improvement to sqlite3_finalize(). (check-in: 8a6913b6 user: drh tags: trunk)
14:19
Fix documentation and test-script typos and a dependency problem on a Makefile. Fix the sqlite_stmt extension virtual table so that it shows the state of all prepared statements for a single instant in time. (check-in: 0a9e08be user: drh tags: branch-3.39)
11:01
Add missing "finish_test" command to the end of test script merge1.test. (check-in: 13cb3f1e user: dan tags: trunk)
2022-06-29
15:16
Have the sqlite_stmt table buffer all data for the current scan within the xFilter method. (check-in: 84a91c25 user: dan tags: trunk)
2022-06-27
21:43
Merge in fix for wal2 recovery. (Leaf check-in: 41d4f14b user: dan tags: begin-concurrent-pnu-wal2)
21:42
Fix a problem causing false corruption reports following recovery of a *-wal file that contains one or more transactions and a *-wal2 file that contains a valid header but no valid transactions. (Leaf check-in: f6eafb65 user: dan tags: wal2)
11:28
Fix a missing dependency for json.lo in Makefile.in (check-in: 65930a5c user: drh tags: trunk)
2022-06-25
21:41
wasm: corrected the isInt32() check to account for negative values. (check-in: 7223f4bb user: stephan tags: wasm-cleanups)
20:32
Put an ALWAYS() on an unreachable branch. (check-in: 58caa50a user: drh tags: trunk)
19:43
Allow flattening of a subquery that is the right operand of a LEFT JOIN in an aggregate query as long as there is no GROUP BY clause. (The GROUP BY clause will interfere with the operation of the TK_IF_NULL_ROW expression nodes.) (check-in: 2cf373b1 user: drh tags: trunk)
19:30
Increase the version number to 3.40.0 so as to begin the next development cycle. (check-in: 4542e323 user: drh tags: trunk)
19:07
wasm: added bindings for sqlite3_extended_result_codes(), sqlite3_open_v2(), and the SQLITE_OPEN_... flags. (check-in: ac876ab9 user: stephan tags: wasm-cleanups)
18:55
Fix documentation type. forum post 8d900996ed. (check-in: 869061f1 user: drh tags: trunk)
18:18
wasm: lots of doc additions and refactoring. Refactored the WASM memory heap usage to hopefully eventually account for a runtime-growable heap. Differentiate between supported TypedArray types for input SQL strings vs binding/fetching blobs. Might (untested) have implemented the ability to bind UtfNNArray values as blobs, where NN is one of 16 or 32. (check-in: e10d57df user: stephan tags: wasm-cleanups)
17:20
Merge version 3.39.0 into the reuse-schema branch. (Leaf check-in: bee9903d user: drh tags: reuse-schema)
17:08
Merge version 3.39.0 into the begin-concurrent-pnu-wal2 branch. (check-in: 09cfef38 user: drh tags: begin-concurrent-pnu-wal2)
16:53
Merge version 3.39.0 into the wal2 branch. (check-in: ad3a7005 user: drh tags: wal2)
16:24
Merge version 3.39.0 into the begin concurrent branch. (Leaf check-in: fb45624a user: drh tags: begin-concurrent)
14:57
Version 3.39.0 (check-in: 14e166f4 user: drh tags: trunk, release, major-release, version-3.39.0)
10:30
wasm: added utility C code to generate a JSON-format "enum" of the numerous SQLITE_xyz constants so that we do not risk those getting out of sync in the JS code. Renamed initSqlite3Module to sqlite3InitModule. Cleanups in the TypedArray handling. (check-in: 778062e3 user: stephan tags: wasm-cleanups)
07:42
wasm: eliminated the need for Stmt objects to keep ahold of memory allocated for bound strings and blobs. Added alternate string/blob bind impls which are hypothetically more efficient but not yet proven to be so. (check-in: da1d3151 user: stephan tags: wasm-cleanups)
06:46
wasm: eliminated the dependency on the deprecated emcc-provided allocate() function. Adjacent cleanups in blob binding. (check-in: 140618b2 user: stephan tags: wasm-cleanups)
03:53
wasm: corrected the propagation of text/blob values via UDFs. DB.exec()'s sql may now be an array of strings which get concatenated together before passing it on to sqlite3_prepare_v2(). DB.exec()'s callback now applies to the first statement which has result columns instead of only the first statement. Fixed a precedence but which caused isInt32() to report false positives. (check-in: 37a8fecb user: stephan tags: wasm-cleanups)
02:54
Minor wasm doc tweaks. (check-in: 42dc5008 user: stephan tags: wasm-cleanups)
02:39
Change a harmless assert() into a testcase(). The actually test case code is in TH3. Fix for the problem described at forum post ed29e196d5c4f3d5. (check-in: cd6254fc user: drh tags: trunk)
02:37
wasm binding: consolidated the two sqlite3_prepare_v2() bindings behind a single dispathcer. Various internal cleanups and refactoring. Branched because trunk is in pencils-down mode for pending 3.39 release. (check-in: ab3e50da user: stephan tags: wasm-cleanups)
2022-06-24
16:15
Merge the 3.39.0 release candidate 1 changes into the reuse-schema branch. (check-in: 506a3e6f user: drh tags: reuse-schema)
15:26
Merge the latest changes into the begin-concurrent-pnu-wal2 branch. (check-in: d3fa6921 user: drh tags: begin-concurrent-pnu-wal2)
15:15
Merge 3.39.0 release candidate 1 into the wal2 branch. (check-in: 5a5e6e36 user: drh tags: wal2)
14:55
Merge 3.39.0 release candidate 1 changes into the begin-concurrent branch. (check-in: 5ae706a4 user: drh tags: begin-concurrent)
12:56
Fix a harmless UBSAN warning associated with PRAGMA schema_version found by OSSFuzz. (check-in: e93fd170 user: drh tags: trunk)
11:05
In sqlite3WhereBegin, do not proceed with coding the loop if an error is detected as part of WHERE expression analysis. For for the assertion-fault described by forum post c3496cf6b1. (check-in: db5266de user: dan tags: trunk)
11:02
A minor fix to test/fuzzinvariants.c so that it works even with column names that originally contain a ':' and that are disambiguated. (check-in: 8d9b1fff user: drh tags: trunk)
2022-06-23
22:43
New test cases for query flattening with LEFT JOIN. (Closed-Leaf check-in: 27f68e47 user: drh tags: flatten-left-join)
20:56
Reintroduce flattener constraint (3c), but this time make it apply only if the outer query holds a GROUP BY, not if the outer query is an aggregate. (check-in: 641dfb91 user: drh tags: flatten-left-join)
15:15
Add back the ability to flatten a LEFT JOIN subquery - previously removed due to ticket [cad1ab4cb7b0fc344]. (check-in: f8fe936a user: drh tags: flatten-left-join)
12:36
Minor correction to a comment. No code changes. (check-in: 5fa00959 user: drh tags: trunk)
2022-06-22
18:51
Enhance the TCL scrip that generates sqlite3-all.c so that it outputs all text in its original order. (check-in: 83ff1a28 user: drh tags: trunk)
18:33
Fix requirements marks that changed due to typo fixes in the documentation. (check-in: 5247df05 user: drh tags: trunk)
15:55
More comment fixes. No changes to code. (check-in: 5c9133ef user: drh tags: trunk)
14:43
Allow more line with on the debugging output for SrcItem elements in the parse tree. This affects debugging builds only and is a no-op for production builds. (check-in: edbe24e7 user: drh tags: trunk)
14:25
Additional enhancements to comments. No changes to code. (check-in: d9a32044 user: drh tags: trunk)
14:00
Give dbtotxt an option to prepend .open --hexdb (check-in: afeee612 user: larrybr tags: trunk)
12:54
Fix a typo in a comment. No changes to code. (check-in: ef9de201 user: drh tags: trunk)
2022-06-21
18:38
Disable the short-cut query planner if the NOT INDEXED modifier is used. Forum post 454d706296. (check-in: bd87d107 user: drh tags: trunk)
13:41
Allow a HAVING clause on any aggregate query, even if there is no GROUP BY clause. This brings SQLite into closer agreement with PostgreSQL and fixes the concern raised by forum post 1a7fea4651. (check-in: 9322a7c2 user: drh tags: trunk)
12:54
When doing a push-down of a WHERE clause into an aggregate subquery that has no FROM clause, do not convert the WHERE clause into a HAVING clause as should normally be done for an aggregate, but leave it as a WHERE clause. We will use a different approach to address forum post 1a7fea4651. (Leaf check-in: 1f575841 user: drh tags: backout)
2022-06-20
19:12
Add an ALWAYS() macro to an always-true branch. (check-in: 364645d8 user: drh tags: trunk)
18:26
Do not allow FROM-clause terms on the left side of a RIGHT or FULL JOIN to be reordered. forum post 6650cd40b5634f35. This is probably more strict that necessary to get correct behavior, but for the first release that supports RIGHT/FULL JOIN it is perhaps better to be correct than fast. A less strict constraint might be to prohibit FROM-clause terms that originate on the left side of a RIGHT JOIN from crossing from the right side to the left side of a LEFT JOIN. Revisit this later. (check-in: 238453ff user: drh tags: trunk)
17:04
Do not allow an ON clause to references tables to its right if there is a RIGHT or FULL join anywhere in the query. Other RDBMSes prohibit this always, but SQLite must allow ON clauses to reference tables to their right for legacy compatibility, unless there is a RIGHT or FULL join someplace in the query, in which case there is no legacy to support. (check-in: e615dbe0 user: drh tags: trunk)
12:42
The fix at [cab9b4cccd13bf0a] was incomplete, as demonstrated by forum post 57bdf2217d. This check-in should complete the fix. (check-in: fb0a23b6 user: drh tags: trunk)
2022-06-19
16:55
Follow-up to check-in [0057bbb508e7662b] - ensure that the database page has been initialized prior to continuing with the optimization. If the page is not initialized, that indicates that the database is corrupt. dbsqlfuzz 09ee46becd5e6d1b2a55c9f8ad767335a90aadb0. (check-in: 11162446 user: drh tags: trunk)
2022-06-18
20:20
Enable query invariant checking in fuzzcheck by default. There is no way to turn it off. Update the invariant checking logic to be consistant with dbsqlfuzz. (check-in: 66ca729b user: drh tags: trunk)
14:50
Abandon a query-invariant check in fuzzcheck if the call to sqlite3_bind_value() returns anything other than SQLITE_OK or SQLITE_RANGE. (check-in: d31e1cd2 user: drh tags: trunk)
10:26
In the --query-invariants option of fuzzcheck, correctly deal with OOMs causing the return value of sqlite3_column_name() to be NULL. (check-in: eabbee4a user: drh tags: trunk)
2022-06-17
21:31
Fix the OP_Concat operator such that when concatenating a BLOB with an odd number of bytes on a database that is UTF16, the size of the resulting string is reduced to a multiple of two. (check-in: 5eb2c236 user: drh tags: trunk)
17:11
Omit the --query-invariants processing in fuzzcheck for queries that contain the implies_nonnull_row() test function. (check-in: 0602a084 user: drh tags: trunk)
16:52
Do not run --query-invariants on statements that make use of sqlite_offset(). (check-in: c5ac4cbf user: drh tags: trunk)
16:39
Various fixes and improvements to the --query-invariants option of fuzzcheck. (check-in: 09aca89b user: drh tags: trunk)
16:32
Allow integers and floating point numbers to compare equal. (Closed-Leaf check-in: 0fe2e465 user: drh tags: query-invariants)
16:09
Improve query-invariants to the point that it would have discovered the [f23a429d4153518d] bug if that bug had not already been fixed. (check-in: 2a7251ed user: drh tags: query-invariants)
15:52
Only run query-invariant checks after the original query has run to completion, so that we know it does not error-out on a subsequent row. (check-in: d1fc857b user: drh tags: query-invariants)
15:11
Fix the virtual table detection mechanism to avoid false-positives that were blocking all failures. Then fix a few of the additional problems that are revealed by that fix. More fixes are needed. (check-in: 42b2e667 user: drh tags: query-invariants)
12:25
Fix the new --query-invariants option on fuzzcheck so that it does not use an unprotected sqlite3_value object as an argument to sqlite3_value_int64(). (check-in: d9f82015 user: drh tags: trunk)
11:39
Avoid omitting the rhs of FULL JOINs in cases where it is only correct to omit the rhs of a LEFT JOIN. Fix for the problem reported by forum post 5610c17c3d. (check-in: f23a429d user: dan tags: trunk)
00:24
Tiny fiddle cleanups. (Closed-Leaf check-in: 01969ba5 user: stephan tags: fiddle-indexeddb)
2022-06-16
23:55
fiddle: initial proof of concept of using Emscripten's IndexedDB virtual filesystem for a persistent db. There's still much work to do to integrate this into something useful for clients but the concept is now proven. (check-in: 65c152d3 user: stephan tags: fiddle-indexeddb)
20:29
Minor fix to the query invariant testing logic of fuzzcheck. (check-in: 447e62a0 user: drh tags: trunk)
13:57
Merge the latest trunk enhancements into the reuse-schema branch. (check-in: 7f405fe2 user: drh tags: reuse-schema)
13:56
Merge the latest trunk enhancements into the begin-concurrent-pnu-wal2 branch. (check-in: 82e7e836 user: drh tags: begin-concurrent-pnu-wal2)
13:44
Merge the latest trunk enhancements into the wal2 branch. (check-in: c8ad8699 user: drh tags: wal2)
13:37
Merge the latest trunk enhancements into the begin-concurrent branch. (check-in: 221e07ed user: drh tags: begin-concurrent)
2022-06-15
20:18
Improvements to query invariants in fuzzcheck. (check-in: 3a461f61 user: drh tags: trunk)
16:26
Improvements to query invariant checking in fuzzcheck. (check-in: 56c60a35 user: drh tags: trunk)
14:57
When running an incremental vacuum, detect growth in the size of the database file (which can only occur if the file is corrupt) and fail with SQLITE_CORRUPT. (check-in: cd7a4412 user: drh tags: trunk)
12:50
Add the --query-invariants option to fuzzcheck. No changes to the SQLite core. (check-in: fef282f9 user: drh tags: trunk)
12:32
Dbsqlfuzz discovered a case where a bytecode branch is in fact taken, so change the designator from VdbeCoverageNeverTaken() to VdbeCoverage(). Test case in TH3. (check-in: 988a2a75 user: drh tags: trunk)
10:46
Add the --query-invariants flag to fuzzcheck. The query invariant checks are only run if that flag is enabled. (Closed-Leaf check-in: d13b4621 user: drh tags: query-invariant-tests)
10:37
Improvements to query invariant testing. Almost working now. (check-in: e0398204 user: drh tags: query-invariant-tests)
2022-06-14
22:21
Fix the OP_NullRow opcode so that it works even if it applied to an ephemeral cursor that has not yet been created. (check-in: 0e925654 user: drh tags: trunk)
21:34
Add missing SQLITE_FCNTL_SIZE_HINT call to a path taken during transaction rollback. (check-in: 6c3266c1 user: dan tags: trunk)
19:12
Attempt to enhance fuzzcheck to do some simple invariant testing on queries. This is an incremental check-in for a work-in-progress. (check-in: ce2d7801 user: drh tags: query-invariant-tests)
2022-06-13
12:42
Do not remove the EP_CanBeNull flag from expressions during a LEFT JOIN strength reduction if the query also contains a RIGHT JOIN. Fix for the problem identified by [forum/forumpost/b40696f50145d21c|forum post b40696f50145d21c]. (check-in: b1be2259 user: drh tags: trunk)
2022-06-10
16:41
The same restrictions on the use of WHERE clause terms to drive indexes in the presence of RIGHT JOINs also apply to the use of WHERE clause terms to manufacture automatic indexes. This fixes a problem identified by forum post 51e6959f61. (check-in: 342c501f user: drh tags: trunk)
15:43
fiddle: minor style tweaks, including using swapped colors for the input/output fields to help (hopefully) reduce the "which field is which?" dissonance. (check-in: e25dad86 user: stephan tags: trunk)
11:28
Do not allow constant propagation between WHERE-clause terms and ON-clause terms as this can confuse RIGHT JOIN. Fix for the problem reported by forum post 8e4c352937e82929. (check-in: cab9b4cc user: drh tags: trunk)
10:10
Fix a faulty assert() statement identified by forum post 0b91a75039. (check-in: 1f132bb0 user: drh tags: trunk)
09:31
fiddle: modernized the UI based on related code in fossil's /pikchrshow. Changed the color scheme to match sqlite.org. (check-in: c4523ffc user: stephan tags: trunk)
2022-06-09
20:26
Do not allow the subtype of a value to cross a subquery boundary. This fixes the problem identified by forum post 3d9caa45cbe38c78. (check-in: bbaf1f2e user: drh tags: trunk)
17:17
Prevent subtype values from slipping across a subquery boundry when the subquery is implemented as a co-routine. (Closed-Leaf check-in: 9e51a6c0 user: drh tags: subtype-subquery)
16:19
The subtype of a value should not propagate across a subquery boundary. Proposed fix for the problem reported by forum post 3d9caa45cbe38c78. Additional works is needed as not all cases are covered. (check-in: 08af1fe2 user: drh tags: subtype-subquery)
2022-06-08
18:29
Move an #ifdef in shell.c to avoid a harmless "unused function" compiler warning. (check-in: 5abb5ef5 user: drh tags: trunk)
18:20
Avoid zeroing the value returned by sqlite3_changes() when a DML statement is automatically reprepared in sqlite3_step(). (check-in: 09c8f9f1 user: dan tags: trunk)
17:48
Improved comments on the new query flattener restriction of the previous check-in. Also a NEVER() macro on an unreachable branch. (check-in: 8c9e2d63 user: drh tags: trunk)
15:38
Fix the query flattener so that it refuses a flattening that might leave both an inner-join and outer-join ON-clause constraint (or equivalent) on the same term of the FROM clause. (check-in: f6c4fb48 user: drh tags: trunk)
15:30
Add restriction (29) to the query flattener - do not allow flattening that would leave both EP_InnerON and EP_OuterON constraints on the same join term. (Leaf check-in: c585d6a4 user: drh tags: right-join-query-flattener)
13:13
New test cases refute check-in [3f45007d544e5f78]. (check-in: 12d3c96c user: drh tags: right-join-query-flattener)
12:46
Do not allow a partial index scan on the left table of a RIGHT JOIN, because since the index is partial, some rows will be omitted from the scan, and those rows will subsequently be picked up by the no-match logic in the right-join post-processing loop. forum post c4676c4956. (check-in: 615c0026 user: drh tags: trunk)
12:35
Minor fix to test/index9.test so that it can be invoked with other index tests using a wildcard. (check-in: ccbd6e77 user: drh tags: trunk)
12:20
Update the routine that determines whether or not a partial index can be used so that it is not specific to LEFT JOIN. (check-in: 5a107fd7 user: drh tags: trunk)
2022-06-07
13:09
Fix the query flattener to deal with a RIGHT JOIN corner case described by forum post 323f86cc30. (check-in: 3f45007d user: drh tags: trunk)
11:02
Test cases for forum post 323f86cc30 added to join8.test, though commented out so that they do not (yet) run. (check-in: 7f97cb67 user: drh tags: trunk)
10:14
Preserve the database encoding on the CAST operator in the sqlite3ValueFromExpr() routine. Forum thread 800eecf5e6cdc3f4. Test case in TH3. (check-in: 3f6a4420 user: drh tags: trunk)
2022-06-06
23:22
More precise determination of when a WHERE clause can be used to drive an index on an outer join. (check-in: 318543a9 user: drh tags: trunk)
22:33
More precise determination of when a WHERE/ON clause term can be used as an indexed join constraint. Testcase macros added to ensure test coverage. (Closed-Leaf check-in: f419e98c user: drh tags: outer-join-tests)
21:08
Extra test cases for outer joins. (check-in: c7505765 user: dan tags: outer-join-tests)
15:27
Do not allow a WHERE clause constraint to be used to drive an index for the right operand of a RIGHT JOIN, since this can cause problem if the constraint implies a not-NULL value for one of the columns for the left operand of the same join. See forum post 206d99a16dd9212f. (check-in: 4a31b794 user: drh tags: trunk)
15:22
In CLI, drop .dbinfo command when build options prevent it from working. (check-in: 4b50a551 user: larrybr tags: trunk)
14:00
Sync w/trunk, pickup fts3corrupt6.test change. (Closed-Leaf check-in: 268072f6 user: larrybr tags: dbinfo-guard)
06:29
fiddle: replaced the huge file selection widget with a smaller proxy button. (check-in: f7c17449 user: stephan tags: trunk)
06:17
Fix a test case in fts3corrupt6.test. Was failing due to [f1dfbc4f]. (check-in: 04b2e477 user: dan tags: trunk)
04:09
shell: in WASM mode, permit ATTACH because the filesystem is a virtual sandbox and ATTACH can be used to provide more import/export options. Minor doc updates in sqlite3-api.js. (check-in: f28de5b7 user: stephan tags: trunk)
2022-06-05
22:58
In CLI, drop .dbinfo command when build options prevent it from working. (check-in: 2512d2f6 user: larrybr tags: dbinfo-guard)
22:40
Create new branch named "dbinfo-guard" (check-in: 8d942ba7 user: larrybr tags: dbinfo-guard)
2022-06-03
14:08
Fix to test case in fts3corrupt.test. No changes to source code. (check-in: d18818af user: dan tags: trunk)
13:52
Fix a 1-byte overread in fts3 that could occur when processing corrupt records. (check-in: f1dfbc4f user: dan tags: trunk)
2022-06-02
16:26
Fix a problem with flattening and window functions causing an "IS <column>" to be transformed to "IS TRUE" or "IS FALSE" when <column> is a view or sub-select expression that is the literal value "TRUE" or "FALSE". (check-in: 2a952c77 user: dan tags: trunk)
02:45
Avoid a direct use of abort() in debug builds to prevent a compilation issue for Windows CE. (check-in: 8eb9a7dd user: mistachkin tags: trunk)
2022-06-01
20:08
New test cases for row values and RIGHT JOIN. (check-in: 5f0582b9 user: drh tags: trunk)
16:05
Ensure that subqueries associated with row-values are invoked before being used when processing a RIGHT JOIN. Fix for the problem described by forum post 087de2d9ec87305b. (check-in: 5a9465dc user: drh tags: trunk)
15:53
Ensure that all necessary row-value subqueries are invoked while running the right-join post processing. (Closed-Leaf check-in: e4e71b4c user: drh tags: row-value-right-join)
13:32
Candidate fix for the problem with row-value WHERE clause constraints on a RIGHT JOIN. (check-in: fdd782a7 user: drh tags: row-value-right-join)