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Code Issues Releases Wiki Activity

Optimize feed query

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Summary:
This was killing us. `EXPLAIN` after:

<table>
<tr><th>id</th><th>select_type</th><th>table</th><th>type</th><th>possible_keys</th><th>key</th><th>key_len</th><th>ref</th><th>rows</th><th>Extra</th></tr>
<tr><td>1</td><td>SIMPLE</td><td>story</td><td>index</td><td>chronologicalKey</td><td>chronologicalKey</td><td>8</td><td></td><td>201</td><td> </td></tr>
<tr><td>1</td><td>SIMPLE</td><td>ref</td><td>ref</td><td>chronologicalKey</td><td>chronologicalKey</td><td>8</td><td>phabricator_feed.story.chronologicalKey</td><td>1</td><td>Using index</td></tr>
</table>

Test Plan: /feed/

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3628
This commit is contained in:
vrana 2012-10-04 14:49:23 -07:00
parent 5578ccdff2
commit 511a8bae34
2 changed files with 7 additions and 2 deletions
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1
src/applications/directory/controller/PhabricatorDirectoryMainController.php
View file

@ -139,6 +139,7 @@ final class PhabricatorDirectoryMainController
$filter = $subnav->selectFilter($this->subfilter, 'all');
$view = null;
switch ($filter) {
case 'all':
$view = $this->buildFeedView(array());

8
src/applications/feed/PhabricatorFeedQuery.php
View file

@ -76,11 +76,15 @@ final class PhabricatorFeedQuery
private function buildGroupClause(AphrontDatabaseConnection $conn_r) {
return qsprintf(
$conn_r,
'GROUP BY ref.chronologicalKey');
'GROUP BY '.($this->filterPHIDs
? 'ref.chronologicalKey'
: 'story.chronologicalKey'));
}
protected function getPagingColumn() {
return 'ref.chronologicalKey';
return ($this->filterPHIDs
? 'ref.chronologicalKey'
: 'story.chronologicalKey');
}
protected function getPagingValue($item) {