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Overview
| Comment: | Update the change log and the speed-and-size graph. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
03fde5ae272314a947e5f3e2eccfd307 |
| User & Date: | drh 2017-05-02 18:46:38 |
Context
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2017-05-04
| ||
| 19:44 | Add the "35% Faster Than The Filesystem" document. check-in: fd906f77ce user: drh tags: trunk | |
|
2017-05-02
| ||
| 18:46 | Update the change log and the speed-and-size graph. check-in: 03fde5ae27 user: drh tags: trunk | |
| 01:31 | Fix typo. check-in: f230c5ce7d user: mistachkin tags: trunk | |
Changes
Changes to misc/speed-size-graph.ods.
cannot compute difference between binary files
Changes to pages/changes.in.
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proc chng {date desc {options {}}} {
global nChng aChng xrefChng
set aChng($nChng) [list $date $desc $options]
set xrefChng($date) $nChng
incr nChng
}
chng {2017-00-00 (3.19.0)} {
<li> When using an index on an expression, try to use expression values already
available in the index, rather than loading the original columns and recomputing
the expression.
<li> Enhance the [flattening optimization] so that it is able to flatten views
on the right-hand side of a LEFT JOIN.
<li> Use [replace()] instead of [char()] for escaping newline and carriage-return
characters embedded in strings in the .dump output from the [command-line shell].
................................................................................
<li> Avoid unnecessary foreign key processing in UPDATE statements that do not
touch the columns that are constrained by the foreign keys.
<li> On a DISTINCT query that uses an index, try to skip ahead to the next distinct
entry using the index rather that stepping through rows, when an appropriate
index is available.
<li> Avoid unnecessary invalidation of [sqlite3_blob] handles when making
changes to unrelated tables.
<p><b>Bug Fixes:</b>
<li> Fix a problem in [PRAGMA integrity_check] that was causing a subsequent
[VACUUM] to behave suboptimally.
<li> Fix the [PRAGMA foreign_key_check] command so that it works correctly with
foreign keys on [WITHOUT ROWID] tables.
<li> Disallow leading zeros in numeric constants in JSON. Fix for ticket
[https://www.sqlite.org/src/info/b93be8729a895a528e2|b93be8729a895a528e2].
<li> Disallow control characters inside of strings in JSON. Fix for ticket
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proc chng {date desc {options {}}} {
global nChng aChng xrefChng
set aChng($nChng) [list $date $desc $options]
set xrefChng($date) $nChng
incr nChng
}
chng {2017-06-00 (3.19.0)} {
<li> When using an index on an expression, try to use expression values already
available in the index, rather than loading the original columns and recomputing
the expression.
<li> Enhance the [flattening optimization] so that it is able to flatten views
on the right-hand side of a LEFT JOIN.
<li> Use [replace()] instead of [char()] for escaping newline and carriage-return
characters embedded in strings in the .dump output from the [command-line shell].
................................................................................
<li> Avoid unnecessary foreign key processing in UPDATE statements that do not
touch the columns that are constrained by the foreign keys.
<li> On a DISTINCT query that uses an index, try to skip ahead to the next distinct
entry using the index rather that stepping through rows, when an appropriate
index is available.
<li> Avoid unnecessary invalidation of [sqlite3_blob] handles when making
changes to unrelated tables.
<li> Transfer any terms of the HAVING clause that use only columns mentioned in
the GROUP BY clause over to the WHERE clause for faster processing.
<li> Reuse the same materialization of a VIEW if that VIEW appears more then
once in the same query.
<li> Enhance [PRAGMA integrity_check] so that it identifies tables that have two
or more rows with the same [rowid].
<p><b>Bug Fixes:</b>
<li> Fix a problem in [REPLACE] that can result in a corrupt database containing
two ore more rows with the same [rowid]. Fix for ticket
[https://www.sqlite.org/src/info/f68dc596c4e6018d|f68dc596c4e6018d].
<li> Fix a problem in [PRAGMA integrity_check] that was causing a subsequent
[VACUUM] to behave suboptimally.
<li> Fix the [PRAGMA foreign_key_check] command so that it works correctly with
foreign keys on [WITHOUT ROWID] tables.
<li> Disallow leading zeros in numeric constants in JSON. Fix for ticket
[https://www.sqlite.org/src/info/b93be8729a895a528e2|b93be8729a895a528e2].
<li> Disallow control characters inside of strings in JSON. Fix for ticket
|