This Day In History For 2020-05-20
1 Year Ago (more context)
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2019-05-20
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| 19:46 | Fix a segfault that could occur in sqlite3session_diff() if NULL were passed as the pzErrMsg argument. (check-in: aee73fd2 user: dan tags: trunk) | |
| 18:43 | Improvements to the automatic compile-time selection of byte-order, as suggested on the mailing list by Seb Kemper. (check-in: b7aad929 user: drh tags: trunk) | |
| 18:35 | A minor variation on check-in [1685610ef8e0dc] which (hopefully) makes the logic a little easier to follow. Also disallows the use of the double-quoted string hack in the query expression used for VACUUM INTO, which is not strictly required, but moves us toward the goal of disallowing the double-quoted string hack everywhere. (check-in: 3e1b55f3 user: drh tags: trunk) | |
| 17:15 | • Closed ticket [9b78184b]: Index on non-existing column results in a fabricated value being fetched plus 6 other changes (artifact: 6093aca9 user: dan) | |
| 17:14 | Disallow string constants enclosed in double-quotes within new CREATE TABLE and CREATE INDEX statements. It is still possible to enclose column names in double-quotes, and existing database schemas that use double-quotes for strings can still be loaded. This addresses ticket [9b78184b]. (check-in: 1685610e user: dan tags: trunk) | |
| 12:35 | • Fixed ticket [d3e7f2ba]: Nested boolean formula with IN operator computes an incorrect result plus 5 other changes (artifact: eaeb86ad user: drh) | |
| 11:07 | • Ticket [d3e7f2ba]: 3 changes (artifact: b9e29307 user: mrigger) | |
| 10:36 | Update the sqlite3ExprCompare() routine so that it does not think "? IS NOT TRUE" is the same as "? IS TRUE". Fix for [d3e7f2ba5b3]. (check-in: 99eba69b user: dan tags: trunk) | |
| 10:23 | • Ticket [d3e7f2ba] Nested boolean formula with IN operator computes an incorrect result status still Open with 6 other changes (artifact: de565831 user: dan) | |
4 Years Ago (more context)
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2016-05-20
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| 23:51 | Add a simple TCL script for summing cachegrind information for each VDBE opcode. (check-in: 96cf821b user: drh tags: trunk) | |
| 21:40 | Another optimization on the OP_Column opcode. (check-in: 1765672c user: drh tags: trunk) | |
| 20:58 | Fix typo in comment. (check-in: 9db8f214 user: mistachkin tags: trunk) | |
| 19:51 | Slight performance improvement in the OP_Column opcode. (check-in: 5c157474 user: drh tags: trunk) | |
| 18:09 | Remove the sqlite3PagerClearCache() routine, which does not accomplish anything useful. (check-in: f250166b user: drh tags: trunk) | |
| 15:53 | Performance optimization and size reduction on the freeP4() routine. (check-in: 4dc56e86 user: drh tags: trunk) | |
| 15:24 | Increase the version number to 3.14.0 since we are already making significant code changes. (check-in: 1a0d0576 user: drh tags: trunk) | |
| 15:15 | Use sqlite3VdbeAddOp0() to code OP_Expire, to save a few bytes. (check-in: 3d55d24d user: drh tags: trunk) | |
| 14:54 | Optimizations to link list merge sort code in vdbesort.c, pcache.c, and rowset.c. Resulting binaries are 10 bytes smaller and use 0.03% fewer CPU cycles. (check-in: 9033afbb user: drh tags: trunk) | |
| 14:11 | For queries with both ORDER BY and LIMIT, if the rows of the inner loop are emitted in ORDER BY order and the LIMIT has been reached, then optimize by exiting the inner loop and continuing with the next cycle of the first outer loop. (check-in: 559733b0 user: drh tags: trunk) | |
| 13:44 | Set the NULLEQ flag on the sequence counter comparison in the ORDER BY LIMIT optimization, to avoid coverage complaints about not testing the NULL case. (Closed-Leaf check-in: ed1b30dc user: drh tags: orderby-limit) | |
| 12:22 | Autoconf configure.ac adjustment to try to get it to look for both editline and readline automatically. (check-in: 645bd696 user: drh tags: trunk) | |
| 00:21 | A few simple test cases for the ORDER BY LIMIT optimization. (check-in: 08849eab user: drh tags: orderby-limit) | |
5 Years Ago (more context)
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2015-05-20
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| 22:01 | Add the sqlite3_value_dup() and sqlite3_value_free() interfaces and use those to add the sqlite3_rtree_query_info.apSqlParam field to the query callback in R-Tree. (check-in: 2007391c user: drh tags: sessions-value-dup) | |
| 21:28 | Add the sqlite3_value_dup() and sqlite3_value_free() interfaces. Use these interfaces to enhance R-Tree to add the sqlite3_rtree_query_info.apSqlParam field. (check-in: a7ee40c4 user: drh tags: value-dup) | |
| 20:50 | Fix a problem in test file e_reindex.test. Cherrypick of [5b3de9390f2f]. (check-in: 80633682 user: dan tags: branch-3.8.6) | |
| 20:34 | Fix a problem causing the fts3 integrity-check to fail if run inside a transaction. Cherrypick of [3b925189a75e]. (check-in: 7d7d633c user: dan tags: branch-3.8.6) | |
| 20:30 | Ensure that tables names are dequoted exactly once by the trigger and FK logic. Cherrypick of [59e92bd9521f] and [9d887b92f808]. (check-in: bd357739 user: dan tags: branch-3.8.6) | |
| 20:27 | Fix an obscure problem with "INSERT INTO tbl(cols) SELECT" statements where the SELECT is a compound with an ORDER BY and "cols" is a strict subset of tbl's columns. Cherrypick of [718d5d0eab04]. (check-in: 3cd2b772 user: dan tags: branch-3.8.6) | |
| 20:24 | Fix a potential NULL pointer deference on a corrupt database schema. Cherrypick of [dc61b292d8ea]. (check-in: 7f3943fb user: dan tags: branch-3.8.6) | |
| 20:21 | Fix a bug caused by cherrypicking from a branch that assumes sqlite3_stricmp() can handle NULL arguments. (check-in: 2c649cdf user: dan tags: branch-3.8.6) | |
| 19:57 | When parsing the schema, ignore any SQL that does not begin with "CREATE". Cherrypick of [d3c00d61581c]. (check-in: 0da229b8 user: dan tags: branch-3.8.6) | |
| 19:53 | Detect and report oversized records constructed from multiple zeroblobs. Cherrypick of [9e139afd9211]. (check-in: 4a08f6b8 user: dan tags: branch-3.8.6) | |
| 19:50 | Do not allow virtual table constructors to be called recursively. Cherrypick of [0a72726da215] (check-in: 023a29ba user: dan tags: branch-3.8.6) | |
| 19:48 | Avoid signed integer overflow when converting oversized in-line integer widths and precisions in printf(). Cherrypick of [c494171f77dc], [5ce4e7d7651e], [95625ef3adc3] and [8e4ac2ce2441]. (check-in: b330c7ff user: dan tags: branch-3.8.6) | |
| 19:44 | Ensure that comparison operators do not mess up the MEM_Dyn flag on registers when reverting affinity changes. Cherrypick of [02e3c88fbf6a]. (check-in: 4125477e user: dan tags: branch-3.8.6) | |
| 19:34 | Fix a problem causing collation sequence names to be dequoted multiple times under some circumstances. Cherrypick of [eddc05e7bb31]. (check-in: fc1a4f29 user: dan tags: branch-3.8.6) | |
| 19:32 | Silently ignore any attempt to add a prefix index for prefixes zero bytes in size to an fts3/4 table. Or any prefix index size so large that it overflows a 32-bit signed integer. Cherrypick of [ad4b19d2ac0889a2]. (check-in: ff7be4db user: dan tags: branch-3.8.6) | |
| 18:17 | Version 3.8.10.2 (check-in: 2ef4f3a5 user: drh tags: release, version-3.8.10.2, branch-3.8.10) | |
| 17:36 | Fix the initialization logic in CREATE TABLE AS so that the correct affinities are applied to all values being inserted into the new table, even if the RHS is a compound SELECT. Fix for ticket [f2ad7de056ab1dc9200]. (check-in: 6a0cf3ce user: drh tags: trunk) | |
| 17:36 | • Fixed ticket [f2ad7de0]: Corrupt table created by CREATE TABLE AS followed by compound SELECT plus 3 other changes (artifact: 81fc82f6 user: drh) | |
| 17:25 | Add a test case to verify that CREATE TABLE AS does not store INT values in TEXT columns. Ticket [f2ad7de056ab1dc92]. (Closed-Leaf check-in: 0e45e8f1 user: drh tags: create-table-as-type-fix) | |
| 17:18 | Simplification of the initialization code for CREATE TABLE AS. (check-in: 937f659e user: drh tags: create-table-as-type-fix) | |
| 15:52 | • Ticket [f2ad7de0] Corrupt table created by CREATE TABLE AS followed by compound SELECT status still Open with 6 other changes (artifact: 8126358c user: drh) | |
| 15:51 | A proposed fix for the problem of CREATE TABLE AS generating a table that has INTEGER values in a TEXT column. Ticket [f2ad7de056ab1dc92]. (check-in: d5e2c1fc user: drh tags: create-table-as-type-fix) | |
| 14:04 | • New ticket [f2ad7de0] Corrupt table created by CREATE TABLE AS followed by compound SELECT. (artifact: 86aa4e22 user: drh) | |
| 09:27 | Improve test coverage of fts5_tokenize.c. (check-in: 0e91a6a5 user: dan tags: fts5) | |
| 00:15 | Fix handling of queries with VALUES on the left and UNION ALL SELECT on the right and a LIMIT clause. (check-in: c403502c user: drh tags: trunk) | |
10 Years Ago (more context)
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2010-05-20
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| 23:51 | Add a new xShmBarrier method to the VFS - a shared-memory fence operation. Implement the same in both unix and win32. Use it to make the WAL subsystem more robust. (check-in: 1bd011c9 user: drh tags: trunk) | |
| 21:21 | Make use of the extra information in the WAL header and frame header to enhance robustness. (check-in: 9580ecb7 user: drh tags: trunk) | |
| 16:45 | Convert the wal-header and frame-header to 24 bytes. Extra information in both headers is designed to enhance robustness after crashes, though the extra information is currently unused. This is a snapshot of a work in progress. (check-in: 66970643 user: drh tags: trunk) | |
15 Years Ago (more context)
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2005-05-20
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| 20:11 | Reorder structure fields to reduce code footprint. Ticket #1253. Need to do more of this. (CVS 2467) (check-in: 27025613 user: drh tags: trunk) | |
| 20:01 | Do not allow the pagesize of :memory: databases to be changed. Silently ignore PRAGMA page_size=N requests for :memory: databases. Ticket #1144 and #1252. (CVS 2466) (check-in: f29a1d88 user: drh tags: trunk) | |
| 19:36 | Comment changes in vdbeapi.c (CVS 2465) (check-in: ab7805fb user: drh tags: trunk) | |
| 09:40 | Fix memory leaks in Tcl user function interface. (CVS 2464) (check-in: f5d9a806 user: danielk1977 tags: trunk) | |