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Overview
| Comment: | Update the change log to mention recent VDBE performance enhancements. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
7113f9f1696d15871a6fbef3f0c44a63 |
| User & Date: | drh 2013-11-21 23:43:43 |
Context
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2013-11-25
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| 13:23 | Fix typo in malloc.html. check-in: bf0de31094 user: drh tags: trunk | |
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2013-11-21
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| 23:43 | Update the change log to mention recent VDBE performance enhancements. check-in: 7113f9f169 user: drh tags: trunk | |
|
2013-11-19
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| 00:20 | Update the list of keywords to include COVERING, WITH, and WITHOUT. COVERING and WITH are currently unused. check-in: 74e28675d4 user: drh tags: trunk | |
Changes
Changes to pages/changes.in.
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[sqlite3_index_info] object to allow a virtual table to report its estimate
on the number of rows that will be returned by a query.
<li>Update the [R-Tree extension] to make use of the enhanced virtual table
interface.
<li>Add the [SQLITE_ENABLE_EXPLAIN_COMMENTS] compile-time option.
<li>Enhanced the comments that are inserted into [EXPLAIN] output when the
[SQLITE_ENABLE_EXPLAIN_COMMENTS] compile-time option is enabled.
<li>Enhanced the ".explain" output formatting of the [command-line shell]
so that loops are indented to better show the structure of the program.
<li>Enhanced the ".timer" feature of the [command-line shell] so that it
shows wall-clock time in addition to system and user times.
}
chng {2013-10-17 (3.8.1)} {
|
> > > |
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 |
[sqlite3_index_info] object to allow a virtual table to report its estimate
on the number of rows that will be returned by a query.
<li>Update the [R-Tree extension] to make use of the enhanced virtual table
interface.
<li>Add the [SQLITE_ENABLE_EXPLAIN_COMMENTS] compile-time option.
<li>Enhanced the comments that are inserted into [EXPLAIN] output when the
[SQLITE_ENABLE_EXPLAIN_COMMENTS] compile-time option is enabled.
<li>Performance enhancements in the VDBE, especially to the OP_Column opcode.
<li>Factor constant subexpressions in inner loops out to the initialization code
in prepared statements.
<li>Enhanced the ".explain" output formatting of the [command-line shell]
so that loops are indented to better show the structure of the program.
<li>Enhanced the ".timer" feature of the [command-line shell] so that it
shows wall-clock time in addition to system and user times.
}
chng {2013-10-17 (3.8.1)} {
|