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68 events for the month beginning 2018-08-01 by user drh
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2018-08-31
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| 23:22 | New hyperlink on the README.md file. (check-in: c663961e user: drh tags: trunk) | |
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2018-08-30
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| 20:28 | Try to identify the places in WAL code where thread-safety depends on the underlying architecture supporting atomic load and store of aligned 32-bit values. (check-in: 47d44be4 user: drh tags: trunk) | |
| 18:53 | Give the debugging routine print_pager_stats() external linkage in order to suppress harmless compiler and TSAN warnings. (check-in: ff4dc082 user: drh tags: trunk) | |
| 01:52 | Improved JSON parser caching. (check-in: 58078c0d user: drh tags: trunk) | |
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2018-08-29
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| 21:01 | Additional test cases for geopoly. (check-in: 19b5eb45 user: drh tags: trunk) | |
| 20:52 | Fixes to the UPDATE logic in Geopoly. (check-in: 7c3cee0a user: drh tags: trunk) | |
| 20:24 | Also free up the MEM_RowSet bit in the Mem.flags field and have RowSet objects be destroyed using Mem.xDel. This change results in faster code. (check-in: f48e9feb user: drh tags: trunk) | |
| 18:47 | Free up the MEM_Frame bit in Mem.flags object. Store VdbeFrame objects as MEM_Blob with a special Mem.xDel pointer instead. (check-in: 62db5fd4 user: drh tags: trunk) | |
| 15:50 | Add the geopoly_group_bbox() aggregate function to the Geopoly module. (check-in: 2d4debcc user: drh tags: trunk) | |
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2018-08-28
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| 21:12 | Disable the server1.test script on old PPC Macs due to problems in the pthreads implementation on those archaic machines. (check-in: 43efdd8c user: drh tags: trunk) | |
| 19:23 | Stricter enforcement of the JSON and GeoJSON standards in the Geopoly extension. (check-in: c0bf3ff3 user: drh tags: trunk) | |
| 15:51 | Fix new issues in the geopoly module discovered by TH3. (check-in: 22fff9af user: drh tags: trunk) | |
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2018-08-27
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| 17:13 | Add support for the Geopoly extension to the R-Tree extension. This also involves adding the SQLITE_INDEX_CONSTRAINT_FUNCTION capability to the xFindFunction method of the sqlite3_module object, and to the sqlite3_index_info.aConstraint.op field in the xBestIndex implementation of virtual tables. (check-in: 666133e3 user: drh tags: trunk) | |
| 17:05 | Minor changes to the visual01.txt test script. (Closed-Leaf check-in: 4bc28eed user: drh tags: rtree-geopoly) | |
| 15:55 | Split the three-argument version of geopoly_within() off into a separate function named geopoly_contains_point(). (check-in: 5a0e1541 user: drh tags: rtree-geopoly) | |
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2018-08-25
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| 23:03 | Enhance the geopoly virtual table so that it does a better job of optimizing geopoly_within() queries. (check-in: 1f717385 user: drh tags: rtree-geopoly) | |
| 19:51 | Provide the two-argument geopoly_within(P1,P2) routine that determines if polygon P2 is contained within polygon P1. Make this function available to the query planner for optimized rtree lookups. Update the visual01.txt script to verify that the new functionality actually works. (check-in: 6eb5d09b user: drh tags: rtree-geopoly) | |
| 18:57 | Fix a harmless compiler warning. (check-in: d49be983 user: drh tags: rtree-geopoly) | |
| 16:22 | Fix a minor issue in the altercol.test script so that it runs on Windows. (check-in: 62089c6d user: drh tags: alter-table-rename-column) | |
| 16:14 | Invoke the authorizer for ALTER TABLE RENAME COLUMN. (check-in: fc293bcb user: drh tags: alter-table-rename-column) | |
| 03:29 | Remove an unnecessary IN_RENAME_COLUMN macro from resolve.c. (check-in: 5858c0bd user: drh tags: alter-table-rename-column) | |
| 02:04 | The implementation of sqlite_rename_column() must be holding the schema mutexes. (check-in: f0eed21d user: drh tags: alter-table-rename-column) | |
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2018-08-23
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| 20:09 | Add the "atrc" test program to the Makefiles. Fix a typo in the instructions in the header comment of the atrc program. (check-in: 2130a407 user: drh tags: alter-table-rename-column) | |
| 19:32 | Fix harmless compiler warnings in the ALTER TABLE logic. Rephrase an error message to use active voice. (check-in: a7dae59a user: drh tags: alter-table-rename-column) | |
| 18:56 | Automatically detect when compiling for AArch64 on windows and set SQLITE_BYTEORDER to little-endian to avoid compile-time testing. (check-in: ef6729be user: drh tags: trunk) | |
| 18:50 | The Expr.iColumn field must also be initialized in tokenExpr(). (check-in: 772985f1 user: drh tags: alter-table-rename-column) | |
| 18:22 | Make sure the Expr.iTable field is initialized by tokenExpr(). (check-in: 02a05a3b user: drh tags: alter-table-rename-column) | |
| 14:54 | Merge enhancements from trunk. (check-in: c446c884 user: drh tags: rtree-geopoly) | |
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2018-08-21
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| 12:46 | Further attempts to reduce the number of false-positives genenerated by static analysis tools. (check-in: 38f9ce65 user: drh tags: trunk) | |
| 12:16 | Fix various harmless warnings generated by static analysis tools. (check-in: a04a0ea9 user: drh tags: trunk) | |
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2018-08-18
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| 18:27 | Additional fixes for harmless compiler warnings that are specific to this branch. (check-in: 9d8e73bf user: drh tags: alter-table-rename-column) | |
| 18:14 | Merge trunk fixes. (check-in: ccad2779 user: drh tags: alter-table-rename-column) | |
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2018-08-16
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| 16:24 | Fix a harmless unused-variable compiler warning that only came up in certain compile-time configurations. (check-in: 45684292 user: drh tags: trunk) | |
| 15:29 | Fix EXPLAIN QUERY PLAN so that it describes IN operators implemented using a ROWID lookup. (check-in: 60045fbf user: drh tags: trunk) | |
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2018-08-14
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| 20:38 | Do not allow ALTER TABLE RENAME COLUMN on a virtual table. (check-in: f6d6b472 user: drh tags: alter-table-rename-column) | |
| 19:27 | Improved error messages when an ALTER TABLE RENAME COLUMN fails due to a duplicate column name. (check-in: 37d11b8e user: drh tags: alter-table-rename-column) | |
| 18:12 | Merge fixes and enhancements from trunk. (check-in: dff0314b user: drh tags: alter-table-rename-column) | |
| 15:13 | • Fixed ticket [908f0014]: UPSERT does not work like PostgreSQL plus 3 other changes (artifact: d55756a6 user: drh) | |
| 15:12 | Fix UPSERT so that it checks the target-constraint first and fires the DO UPDATE if that constraint is violated regardless of whether or not other constraints are in violation. This aligns SQLite behavior with what PostgreSQL does. Fix for ticket [908f001483982c43cdb476dfb590a1a]. (check-in: 529fb55e user: drh tags: trunk) | |
| 11:06 | • Ticket [908f0014] UPSERT does not work like PostgreSQL status still Open with 6 other changes (artifact: c781e55d user: drh) ... 1 similar event omitted. | |
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2018-08-13
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| 22:50 | Stop requiring the global VFS mutex to access the unixInodeInfo.pUnused field. The unixInodeInfo mutex is sufficient. (check-in: e3ea43da user: drh tags: trunk) | |
| 20:46 | Take extra precautions to ensure access to unixInodeInfo.pUnused is protected by all necessary mutexes. (check-in: 8b1e0010 user: drh tags: trunk) | |
| 19:59 | • Edit [2447e0fd9830b4de|2447e0fd]: Move to branch unix-lock-fix-attempt. Mark "Closed". Edit check-in comment. (artifact: f1646635 user: drh) | |
| 17:02 | Make the sqlite_rename_column() SQL function resistant to problems caused by OOMs and/or malformed parameters submitted by hostile application code. Also add additional comments to the RENAME COLUMN logic. (check-in: 87743dde user: drh tags: alter-table-rename-column) | |
| 15:09 | Fix legacy comments on Token. Begin commenting the new ALTER TABLE RENAME COLUMN code. Fix a memory leak in the sqlite_rename_column() SQL function. (check-in: 32edc892 user: drh tags: alter-table-rename-column) | |
| 13:43 | Fix issues with ALTER TABLE RENAME COLUMN associated with OOM errors. (check-in: 0b28dd5c user: drh tags: alter-table-rename-column) | |
| 11:32 | Fix an incorrect comment on the unix-nolock VFS object. No functional code changes. (check-in: 90f7c193 user: drh tags: trunk) | |
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2018-08-11
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| 20:46 | Add the "atrc" test program. "Atrc" is short for "ALTER TABLE RENAME COLUMN". See the header comment on the program itself for further information. (check-in: ed64a55a user: drh tags: alter-table-rename-column) | |
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2018-08-10
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| 19:33 | Fix harmless compiler warnings. (check-in: 9564d700 user: drh tags: alter-table-rename-column) | |
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2018-08-09
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| 21:45 | Fix the isLikeOrGlob() routine in the WHERE clause processing logic so that it avoids signed/unsigned character comparisons, as that can lead to an incorrect answer if the ESCAPE clause is an invalid UTF8 string. Problem found by OSSFuzz. (check-in: 4195a3f8 user: drh tags: trunk) | |
| 18:36 | When a column must be a constant due to WHERE clause and the value of that column is being coded as a constant, make sure the affinity is correct. (check-in: 7404ea83 user: drh tags: trunk) | |
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2018-08-06
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| 02:08 | Enhance the edit() function so that it converts text from \r\n back into \n only if the original unedited copy contained no \r\n values. (check-in: 20c995d3 user: drh tags: trunk) | |
| 01:39 | Add the --info option to the fuzzcheck test utility. (check-in: 1caaaaa7 user: drh tags: trunk) | |
| 01:21 | Fix an overzealous assert() statement discovered by OSSFuzz. (check-in: d9c9fe9f user: drh tags: trunk) | |
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2018-08-04
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| 20:30 | Remove the column-cache from the code generator. The column-cache has been a persistent source of bugs for years and with recent improvements in the performance of OP_Column, it no longer provides a benefit. After the column cache is removed, the binary is almost 2KB smaller and the speed-check.sh performance test is over 3 million cycles faster. (check-in: cdff3af7 user: drh tags: trunk) | |
| 20:12 | Remove a testcase() that is no longer reachable without the column cache. Provide an assert() to help prove that the testcase is no longer reachable. (Closed-Leaf check-in: a500893b user: drh tags: omit-column-cache) | |
| 17:15 | Fix comments that were made obsolete by the removal of the column cache. (check-in: 2041231d user: drh tags: omit-column-cache) | |
| 16:54 | Remove more column-cache residue: The OP_SetColTab and OP_VerifyColTab opcodes and the associated SQLITE_DEBUG_COLUMNCACHE logic. (check-in: 80236e81 user: drh tags: omit-column-cache) | |
| 15:53 | Further logic simplifications that flow out of the omission of the column cache. (check-in: 7d9072b0 user: drh tags: omit-column-cache) | |
| 15:28 | Add test cases for the constant expression fix of the previous check-in. (check-in: 95db5bd9 user: drh tags: trunk) | |
| 15:16 | Ensure that all expressions that are to be evaluated once at the start of a prepared statement (the Parse.pConstExpr expressions) pass the sqlite3ExprIsConstantNotJoin() test. It is not sufficient to pass just the sqlite3ExprIsConstant() test as that would allow through column references that are bound to constants by the WHERE clause in the constant propagation optimization. This fixes a problem discovered by OSSFuzz. (check-in: 8bc7f84c user: drh tags: trunk) | |
| 14:30 | Remove additional traces of the column cache. (check-in: db6052e9 user: drh tags: omit-column-cache) | |
| 02:23 | • Edit [3f5f60cd75293302|3f5f60cd]: Edit check-in comment. (artifact: 6295c0af user: drh) | |
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2018-08-03
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| 23:04 | Completely remove the column cache logic, which has been a persistent source of bugs for many years. Due to recent enhancements to the performance of the OP_Column opcode, removing the column cache actually makes speed-check.sh run faster. Removing the column cache also saves about 1,800 bytes of code space. (check-in: 3f5f60cd user: drh tags: omit-column-cache) | |
| 15:59 | • Edit [fa94b49e02eb6b8f|fa94b49e]: Edit check-in comment. (artifact: af820999 user: drh) | |
| 15:58 | Fix the OP_SeekRowid opcode so that it has no type-change side-effects on the key register in P3. This fixes an obcure problem that arises when doing equi-joins between a table with a TEXT column against another table with an INTEGER PRIMARY KEY. The original problem was discovered when OSSFuzz created such a query and hit an assert() in OP_VerifyTabCol that was specifically designed to catch these kinds of errors at run-time. Test cases for this fix are in TH3. (check-in: fa94b49e user: drh tags: trunk) | |
| 13:56 | Improve "PRAGMA vdbe_trace=ON" to always show the key values for the OP_IdxGT and related opcodes. (check-in: 0f881955 user: drh tags: trunk) | |