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66 events for the month beginning 2018-02-01 by user drh

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2018-02-28
22:21
Enhance the sessions documentation to show the methods of the various objects. (check-in: e0117775 user: drh tags: trunk)
21:50
Use <pre> around code snippets in the documentation for sessions interfaces. This is a documentation change only with no changes to code. (check-in: c949b915 user: drh tags: trunk)
04:30
Fix a potential NULL pointer deref following OOM in the new IS TRUE logic. (check-in: 48775ec6 user: drh tags: trunk)
2018-02-27
15:40
Add support for TRUE and FALSE keywords and for operators IS TRUE, IS FALSE, IS NOT TRUE, and IS NOT FALSE. If there is are columns named TRUE or FALSE, then the keywords resolve to the column names, for compatibility. The behavior of the "DEFAULT true" phrase is changed to mean what it says, rather than being an alias for "DEFAULT 'true'". (check-in: 9a7f02c5 user: drh tags: trunk)
14:49
Clean up comments and variable names prior to merge. (Closed-Leaf check-in: 6445519e user: drh tags: is-true-operator)
00:58
Remove an unnecessary decision. (check-in: adcb4665 user: drh tags: is-true-operator)
2018-02-26
21:26
Code simplifications. New test cases. (check-in: 57508518 user: drh tags: is-true-operator)
20:15
Get the "DEFAULT true" and "DEFAULT false" phrases working correctly in CREATE TABLE. (check-in: 8002f87d user: drh tags: is-true-operator)
19:03
Enhance TreeView so that it can display the new IS TRUE expression trees. (check-in: 7e38305e user: drh tags: is-true-operator)
18:49
Refactor for correct NULL handling in the IS TRUE, IS FALSE, IS NOT TRUE, and IS NOT FALSE operators. (check-in: cf2abd59 user: drh tags: is-true-operator)
15:31
Merge the fix for determining truth of floating point values from trunk. (check-in: 003dc140 user: drh tags: is-true-operator)
15:28 Fixed ticket [36fae083]: Inconsistent interpretation of truth plus 6 other changes (artifact: 9eea4013 user: drh)
15:27
Always interpret non-zero floating-point values as true even if their integer part is zero. Fix for ticket [36fae083b450e3af857a459e20]. (check-in: a983fa85 user: drh tags: trunk)
15:14 New ticket [36fae083] Inconsistent interpretation of truth. (artifact: a9d7468c user: drh)
03:20
Experimental implementation of IS TRUE and IS FALSE operators. All TRUE and FALSE to act like constants if the names do not resolve to a column name. (check-in: 40314bc9 user: drh tags: is-true-operator)
2018-02-22
18:30
For the "SQLite archive" link in the README.md file, point to the CLI .archive command documentation, not the original "sqlar" website. (check-in: 4290faf5 user: drh tags: trunk)
18:28
Updates to the README.md file. Mention the ability to use SQLite-archives for download. (check-in: ab9a7ae4 user: drh tags: trunk)
2018-02-21
01:48
Remove an unreachable branch in the walIndexPage() logic. (check-in: 4e61a973 user: drh tags: trunk)
01:05
Small performance improvement in sqltie3WalFindFrame(). (check-in: 52013cad user: drh tags: trunk)
00:48
Remove an unnecessary memset(). (check-in: e7b7f588 user: drh tags: trunk)
2018-02-20
22:20
Make the walIndexPage() routine about 3x faster by factoring out the seldom used reallocation logic into a separate subroutine. (check-in: e2b10714 user: drh tags: trunk)
17:02
In the speed-check.sh script, make WAL mode the default. Add the --legacy option to do DELETE mode. Continue to use DELETE mode for long-term performance graphs since WAL mode was not always available, but use WAL mode for day-to-day performance measurements. (check-in: cd816138 user: drh tags: trunk)
16:39
Remove a superfluous "#if 1". No logic changes. (check-in: caaffd32 user: drh tags: trunk)
15:23
Optimize calls to sqlite3_mprintf("%z...") so that they attempt to append text onto the end of the existing memory allocation rather than reallocating and copying. (check-in: 4bc8a48e user: drh tags: trunk)
13:46
Remove a lot of the text describing extended format options from the documentation on sqlite3_mprintf() and friends, since that information is now covered by the separate printf.html document. Provide links to that other document. No changes to code. (check-in: 99eec556 user: drh tags: trunk)
2018-02-19
22:46
Enhance the string formatter (used by printf()) so that the width and precision of string substitution operators refer to characters instead of bytes when the alternate-form-2 flag ("!") is used. Also fix the %c substition to always work within unicode, regardless of the alternate-form-2 flag. (check-in: c883c4d3 user: drh tags: trunk)
21:58
Printing a value of 0 using %c terminates the string. (Closed-Leaf check-in: 255612f0 user: drh tags: printf-enhancement)
20:41
More test cases for unicode handling in printf. (check-in: ac188211 user: drh tags: printf-enhancement)
20:23
Test cases and a bug fix on the new unicode handling in %c. (check-in: e41d64e9 user: drh tags: printf-enhancement)
18:56
Fix the %c substitution in printf() so that it works with unicode characters. (check-in: c35be1d9 user: drh tags: printf-enhancement)
18:03
Make the alternate-form-2 flag ("!") change the meaning of width and precision from bytes to characters for the %q, %Q, and %w extensions of printf(). (check-in: 391540ac user: drh tags: printf-enhancement)
17:03
In the printf() library, measure width and precision in characters rather than bytes if the "!" (alternate-form-2) flag is present on a %s or %z substitution. (check-in: ca31c663 user: drh tags: printf-enhancement)
16:34
Only try to use the geteuid() interface on unix if HAVE_FCHOWN is defined. This fixes the build for vxWorks, we are told. (check-in: 38f654dc user: drh tags: trunk)
13:53
Fix an assert so that it compares two CellInfo objects field by field instead of using memcmp(). Memcmp() does not work on x86 because of uninitialized padding bytes. (check-in: 88258770 user: drh tags: trunk)
2018-02-18
17:50
Fix a memory leak in the processing of nested row values. This problem has existed every since row values support was added (version 3.15.0, 2016-10-14) but was only just now detected by OSSFuzz. (check-in: 2df6bbf1 user: drh tags: trunk)
2018-02-15
21:00
Do not allow parameters or schema references inside of WITH clause of triggers and views. This fixes a bug discovered by OSSFuzz and present since common-table-expressions were first added in 2014-02-03. (check-in: b918d4b4 user: drh tags: trunk)
20:00
On unix, the "PRAGMA fsync_interval=N" command causes an extra fdatasync() after writing N bytes of content, to force a write-queue flush in the underlying OS. This is an experimental hack that is not expected to land on trunk. (Leaf check-in: b18cc5fe user: drh tags: write-queue-flush-hack)
03:56
Improve performance of editdist3() by keeping the costs in sorted order. Also add a new regression test to editdist3(). (check-in: dc734c5b user: drh tags: trunk)
03:05
Reduce the number of calls to strncmp() required to run editDist3Core(). (check-in: afd6fbc0 user: drh tags: trunk)
01:03
Fix the --heap, --pagecache, --lookaside and other options to the command-line shell that invoke sqlite3_config() so that they work again. (check-in: 00707f2f user: drh tags: trunk)
2018-02-14
23:27
Add the --readonly option to the ".open" command in the CLI. (check-in: 06870bb1 user: drh tags: trunk)
20:58
Performance optimizations to the editdist3() function in the spellfix extension. (check-in: 70d304dc user: drh tags: trunk)
20:25
Disable assert() in the spellfix extension if not compiled with SQLITE_DEBUG. (check-in: 3c53ee0f user: drh tags: trunk)
15:30
New test cases for the editdist3() function in the spellfix extension. (check-in: 2d3f1f22 user: drh tags: trunk)
14:13
Try to optimize spellfix1 by storing a NULL in the k1 column of %_vocab if it would otherwise have the same value as the word column. (check-in: b76ec7cb user: drh tags: trunk)
2018-02-13
19:16 Fixed ticket [f484b65f]: Incorrect result from row-value comparison in WHERE clause plus 6 other changes (artifact: 79ae33f7 user: drh)
19:13
Improved test cases for the [f484b65f3d6230593c34f] bug. (check-in: 1f300514 user: drh tags: trunk)
18:48
Fix an incorrect table lookup used to find the appropriate search operator for a WHERE clause on a row-value inequality. The incorrect table lookup was causing an incorrect answer for the less-than operator. Fix for ticket [f484b65f3d6230593c34f11] (check-in: f3112e67 user: drh tags: trunk)
18:05 New ticket [f484b65f] Incorrect result from row-value comparison in WHERE clause. (artifact: e19d6906 user: drh)
16:35 Fixed ticket [d6ec09ec]: Assertion fault in FTS4 plus 5 other changes (artifact: 3f87a311 user: drh)
16:30
Remove an unused variable from FTS4. (check-in: 27ea783b user: drh tags: trunk)
16:12 New ticket [d6ec09ec] Assertion fault in FTS4. (artifact: e62a329a user: drh)
2018-02-12
20:50
Updates to the speed-check.sh script for improvements to the --vdbeprofile option. (check-in: f89c8f8e user: drh tags: trunk)
20:27
When compiling with VDBE_PROFILE, add the sqlite3NProfileCnt global variable which can be used to measure per-opcode values other than elapse time, if non-zero. (check-in: d44d5936 user: drh tags: trunk)
13:30
Fix a possible infinite loop in VACUUM that can come up when the schema has been carefully corrupted. Problem discovered by OSSFuzz. Test cases in TH3. (check-in: 27754b74 user: drh tags: trunk)
2018-02-10
02:31
Fix misplaced testcase() macros from the previous check-in. (check-in: 3aed949a user: drh tags: trunk)
2018-02-09
23:25
Improve the performance of the built-in REPLACE() function in cases where it does many substitutions that make the string larger. OSSFuzz is reporting intermittant timeouts when running a test where it does a REPLACE() on a 930KB random blob. Perhaps this enhancement will fix that. (check-in: fab2c2b0 user: drh tags: trunk)
20:49
Add the zorder.c extension implementing zorder() and unzorder() SQL functions. (check-in: a57a77dc user: drh tags: trunk)
15:04
Fix a harmless compiler warning. (check-in: a6c31154 user: drh tags: trunk)
2018-02-05
16:39
Allocation the mutex used by the unix VFS only once at initialization, instead of every time it is needed. (check-in: 5764dc16 user: drh tags: trunk)
2018-02-04
20:33
In the CLI, make sure sqlite3_initialize() is called correctly even for non-UTF8 hosts. (check-in: a3591fb5 user: drh tags: trunk)
2018-02-02
16:46
Enable the ".wheretrace" and ".selecttrace" options in the shell when configure is run using --enable-debug. This mirrors a similar change that has already occurred on trunk. (Leaf check-in: c4f798b2 user: drh tags: branch-3.9.2)
2018-02-01
16:17 Fixed ticket [34363494]: Index on expression goes corrupt from valid SQL plus 6 other changes (artifact: fb519404 user: drh)
15:57
New assert() statements to help ensure that no other errors similar to [343634942dd54ab57b7] ever appear in the code. (check-in: 5a70af1e user: drh tags: trunk)
01:13
When an index is based on a text representation of a numeric column in the original table, make sure the indexed value uses the canonical text representation of the numeric value in the table. Proposed fix for ticket [343634942dd54ab57b70]. (check-in: 88e2ce91 user: drh tags: trunk)
00:08 New ticket [34363494] Index on expression goes corrupt from valid SQL. (artifact: bc6f47b3 user: drh)
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