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Overview
Comment: | Edits to the change log. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
c508b3c51a5ca1e10ba64b7a5524c158 |
User & Date: | drh 2013-10-11 14:18:23.823 |
Context
2013-10-11
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20:16 | Improve the text (rephrasing, not changing the meaning) of some requirements related to functions and pragmas. Improve or correct requirements marks. (check-in: 77dee5dcd0 user: drh tags: trunk) | |
14:18 | Edits to the change log. (check-in: c508b3c51a user: drh tags: trunk) | |
2013-10-08
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15:07 | Revise the description of the Tcler's wiki database corruption event. (check-in: 63ad7e56b1 user: drh tags: trunk) | |
Changes
Changes to pages/changes.in.
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18 19 20 21 22 23 24 | incr nChng } chng {2013-10-?? (3.8.1)} { <li>Added the [unlikely()] and [likelihood()] SQL functions to be used as hints to the query planner. <li>Added the [soft_heap_limit pragma]. | | > | > > > > > > > > > > > | 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | incr nChng } chng {2013-10-?? (3.8.1)} { <li>Added the [unlikely()] and [likelihood()] SQL functions to be used as hints to the query planner. <li>Added the [soft_heap_limit pragma]. <li>Enhancements the query planner: <ul> <li>Take into account WHERE clause terms that cannot be used with indices. <li>Estimate the sizes of table and index rows and use the smallest applicable B-Tree for full scans and "count(*)" operations. </ul> <li>Added support for [SQLITE_ENABLE_STAT4] <li>Added support for "sz=NNN" parameters at the end of sqlite_stat1.stat fields used to specify the average length in bytes for table and index rows. <li>Changed the [index_list pragma] so that it shows the estimated size of index rows and so that it shows a new row for the PRIMARY KEY index that gives the estimated size of table rows. <li>Avoid running foreign-key constraint checks on an UPDATE if none of the modified columns are associated with foreign keys. <li>Added the [SQLITE_MINIMUM_FILE_DESCRIPTOR] compile-time option <li>Added the win32-longpath VFS on windows. <li>The [Date And Time Functions] are enhanced so that the current time (ex: julianday('now')) is always the same for multiple function invocations within the same [sqlite3_step()] call. <li>[FTS4] queries are better able to make use of docid<$limit constraints to limit the amount of I/O required. <li>The [VACUUM] command packs the database about 1% tighter. <li>The sqlite3_analyzer utility program is updated to provide better descriptions and to compute a more accurate estimate for "Non-sequential pages" <li>Refactor the implementation of PRAGMA statements to improve parsing performance. <li><b>Bug fix:</b> Return the correct answer for "SELECT count(*) FROM table" even if there is a [partial index] on the table. Ticket [http://www.sqlite.org/src/info/a5c8ed66ca|a5c8ed66ca]. } chng {2013-09-03 (3.8.0.2)} { <li>Fix a bug in the optimization that attempts to omit unused LEFT JOINs |
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