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83 events for the month beginning 2022-07-01 by user drh
Following month ↑|
2022-07-26
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| 19:10 | Restore a VDBE coverage macro that is mistakenly deleted for check-in [92ac01d41d46ab73]. (check-in: 01de7ec4 user: drh tags: trunk) | |
| 15:41 | Omit a unused variable initialization in order to suppress a harmless compiler warning. (check-in: 2d703c5e user: drh tags: trunk) | |
| 15:32 | Make sure IF_NULL_ROW expressions receive a separate slot in the sorter used to implement GROUP BY. (check-in: 2bda4fca user: drh tags: flatten-left-join) | |
| 14:37 | Improved AggInfo.aCol debugging output, intended to debug a problem with LEFT JOIN flattening into an aggregate query with GROUP BY. (check-in: e717e029 user: drh tags: flatten-left-join) | |
| 10:16 | Add a OOM term to a single assert() statement. (check-in: 217fc3eb user: drh tags: trunk) | |
| 01:20 | Performance optimization: avoid unnecessary calls to computeLimitRegisters(). (check-in: f48bd8f8 user: drh tags: trunk) | |
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2022-07-25
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| 23:34 | Fix an assert() that was made out-of-date by [b52393ac28debe98]. (check-in: db8230e8 user: drh tags: trunk) | |
| 23:01 | Performance optimization by only invoking sqlite3FkCheck() when it is actually needed. (check-in: 98b0e830 user: drh tags: trunk) | |
| 22:31 | Performance optimization in sqlite3ViewGetColumnNames(). (check-in: 390717e6 user: drh tags: trunk) | |
| 22:02 | Fix a harmless compiler warning. (check-in: 9aba7417 user: drh tags: trunk) | |
| 21:37 | In-line a call to sqlite3ExprCode() in insert.c, for a size reduction and performance increase. (check-in: 35066b14 user: drh tags: trunk) | |
| 20:21 | Performance optimization in computing the Expr.nHeight field. (check-in: 1798ce97 user: drh tags: trunk) | |
| 19:05 | Small performance increase and size reduction by splitting out the sqlite3VdbeGetLastOp() from sqlite3VdbeGetOp(). (check-in: 92ac01d4 user: drh tags: trunk) | |
| 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) | |
| 15:56 | • Edit [dbe522b011552394|dbe522b0]: Mark "Closed". (artifact: d57218c7 user: drh) | |
| 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) | |
| 14:03 | • Edit [dbe522b011552394|dbe522b0]: Move to branch nonworking-flatten-left-join. Edit check-in comment. (artifact: d14cf1e5 user: drh) | |
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2022-07-23
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| 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) | |
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2022-07-22
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| 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) | |
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2022-07-21
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| 16:07 | Merge the fixes from branch-3.39 into the reuse-schema branch. (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) | |
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2022-07-20
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| 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. Fix for CVE-2022-3034. Test case in TH3. (check-in: e1f1cfe7 user: drh tags: trunk) | |
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2022-07-18
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| 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 integer overflow on multi-gigabyte string arguments. CVE-2022-35737. (check-in: 26db4fc2 user: drh tags: branch-3.39) | |
| 15:02 | Increase the size of loop variables in the printf() implementation to avoid integer overflow on multi-gigabyte string arguments. CVE-2022-35737. (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) | |
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2022-07-15
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| 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) | |
| 20:35 | • Edit [44d77a7f807f5dc3|44d77a7f]: Edit check-in comment. (artifact: 7c2795b9 user: drh) | |
| 20:35 | • Edit [eaef7b71900ef770|eaef7b71]: Edit check-in comment. (artifact: 510bfb5a user: drh) | |
| 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) | |
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2022-07-14
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| 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 [85ddaf1b59a19cbd], defer deleting the AST of the deleted ORDER BY clause until after code generation ends. Fix for CVE-2022-3039. Test case in TH3. (check-in: f22f95b8 user: drh tags: trunk) | |
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2022-07-13
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| 19:41 | Version 3.39.1 (check-in: 7c16541a user: drh tags: release, branch-3.39, version-3.39.1) | |
| 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) | |
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2022-07-12
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| 10:46 | Fix a bug in wapptest.tcl introduced by [51255bad4c1fb607]. (check-in: b26d097e user: drh 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) | |
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2022-07-11
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| 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) | |
| 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) | |
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2022-07-10
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| 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) | |
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2022-07-08
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| 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) | |
| 11:55 | Remove an obsolete statement from a comment. No changes to code. (check-in: 99afb3f4 user: drh tags: trunk) | |
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2022-07-07
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| 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) | |
| 20:29 | 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) | |
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2022-07-05
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| 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) | |
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2022-07-04
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| 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) | |
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2022-07-03
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| 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) | |
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2022-07-01
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| 21:59 | • Edit [566b7842ee286ed8|566b7842]: Edit check-in comment. (artifact: 70db2cc8 user: drh) | |
| 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) | |
| 12:45 | • Edit [bf34eddb66fdb56f|bf34eddb]: Move to branch mistake. Mark "Closed". Edit check-in comment. (artifact: deb8832d user: drh) | |
| 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) | |