This Day In History For 2019-08-03
1 Year Ago (more context)
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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: 3f5f60cd75 user: drh tags: omit-column-cache) | |
| 20:19 | Fix the handling of sub-queries with LIMIT clauses by the optimization activated by compile-time symbol SQLITE_COUNTOFVIEW_OPTIMIZATION. (check-in: 21235d9a41 user: dan tags: trunk) | |
| 15:59 | • Edit [fa94b49e02eb6b8f|fa94b49e02]: Edit check-in comment. (artifact: af8209998f 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: fa94b49e02 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: 0f881955ed user: drh tags: trunk) | |
2 Years Ago (more context)
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2017-08-03
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| 21:01 | • Edit [d8637badf63b90b6|d8637badf6]: Move to branch mistake. Mark "Closed". (artifact: 0dfc15afa6 user: dan) | |
| 20:13 | Modify swarmvtab to use a separate database connection for each database file. (check-in: 1f05ad29c3 user: dan tags: union-vtab) | |
| 15:50 | Add SQLITE_API qualifiers to public API functions in header file sqlite3rbu.h. (check-in: d8637badf6 user: dan tags: sqlite3rbu.h-fix) | |
| 15:43 | Fix some problems in RBU test cases. Also update RBU source code to better handle the trivial case where an RBU update is applied to a database zero pages in size. (check-in: 7676b39bc1 user: dan tags: trunk) | |
| 00:29 | Optimization to the comparison opcodes in the byte-code engine. (check-in: 654935c773 user: drh tags: trunk) | |
3 Years Ago (more context)
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2016-08-03
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| 18:00 | Fix a problem with estimating the number of rows visited by a query that uses a multi-column IN(SELECT...) constraint. (check-in: 3c2f908f5b user: dan tags: rowvalue) | |
| 16:39 | Fix another problem involving vector range constraints and mixed ASC/DESC indexes. (check-in: 1559f4c434 user: dan tags: rowvalue) | |
| 16:14 | Fix stat4-based cost estimates for vector range constraints. (check-in: 18af74abc8 user: dan tags: rowvalue) | |
| 14:51 | Fix a typo in a comment in btree.c. No changes to code. (check-in: 722c128163 user: drh tags: trunk) | |
| 13:40 | Fix the --help output on fuzzcheck so that it fix in an 80-character window. (check-in: b91444b5db user: drh tags: trunk) | |
4 Years Ago (more context)
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2015-08-03
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| 17:03 | Add the "--uri" option to utility program "showdb". This option causes showdb to use sqlite with the SQLITE_OPEN_URI option to open the database file, instead of opening it directly using the OS open() function. (check-in: 90e34d5119 user: dan tags: showdb-uri-option) | |
| 13:44 | Allow a VIEW to reference undefined tables and functions when initially created. The error report is deferred until the VIEW is used. This allows views to be created before subviews and tables that the view references. (check-in: 70b57dafb3 user: drh tags: trunk) | |