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Overview
| Comment: | Update the change log with more details of recent enhancements. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
b22a695db242bb8918d8fa6d43877de3 |
| User & Date: | drh 2017-10-30 17:32:01 |
Context
|
2017-11-03
| ||
| 02:37 | Fix typo reported on the mailing list. check-in: d26d101c74 user: mistachkin tags: trunk | |
|
2017-10-30
| ||
| 17:32 | Update the change log with more details of recent enhancements. check-in: b22a695db2 user: drh tags: trunk | |
|
2017-10-28
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| 20:58 | Preliminary changes for the 3.22.0 release. check-in: b3e5268a9a user: drh tags: trunk | |
Changes
Changes to pages/changes.in.
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 |
global nChng aChng xrefChng
set aChng($nChng) [list $date $desc $options]
set xrefChng($date) $nChng
incr nChng
}
chng {2018-01-04 (3.22.0)} {
<li> Query planner enhancements (details pending)
}
chng {2017-10-24 (3.21.0)} {
<li> Take advantage of the atomic-write capabilities in the
[https://en.wikipedia.org/wiki/F2FS|F2FS filesystem] when available, for
greatly reduced transaction overhead. This currently requires the
[SQLITE_ENABLE_BATCH_ATOMIC_WRITE] compile-time option.
|
| > > > > > > > > > > |
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 |
global nChng aChng xrefChng
set aChng($nChng) [list $date $desc $options]
set xrefChng($date) $nChng
incr nChng
}
chng {2018-01-04 (3.22.0)} {
<li> Query planner enhancements.
<ol type='a'>
<li> The optimization of using an index to quickly compute an
aggregate min() or max() is extended to work with
[indexes on expressions].
<li> The decision of whether to implement a FROM-clause subquery
as a co-routine or using query flattening now considers whether
the result set of the outer query is "complex" (if it
contains functions or expression subqueries). A complex result
set bias the decision toward the use of co-routines.
</ol>
}
chng {2017-10-24 (3.21.0)} {
<li> Take advantage of the atomic-write capabilities in the
[https://en.wikipedia.org/wiki/F2FS|F2FS filesystem] when available, for
greatly reduced transaction overhead. This currently requires the
[SQLITE_ENABLE_BATCH_ATOMIC_WRITE] compile-time option.
|