Thijs/wiki.techinc.nl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Improve query; add dupe and loop checking

Browse source
This commit is contained in:
Aaron Schulz 2008-04-09 19:19:10 +00:00
parent f7f273defa
commit 41ea588bef
1 changed files with 21 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
maintenance/populateParentId.php
View file

@ -39,10 +39,29 @@ function populate_rev_parent_id( $db ) {
# the original previous revision of the title when the
# edit was made...
foreach( $res as $row ) {
# First, check rows with the same timestamp other than this one
# with a smaller rev ID. The highest ID "wins". This avoids loops
# as either id or timestamp need to be going from parent_id to parent_id
$previousID = $db->selectField( 'revision', 'rev_id',
array( 'rev_page' => $row->rev_page, "rev_timestamp < '{$row->rev_timestamp}'" ),
array( 'rev_page' => $row->rev_page, 'rev_timestamp' => $row->rev_timestamp,
"rev_id < {$row->rev_id}" ),
__FUNCTION__,
array( 'ORDER BY' => 'rev_timestamp DESC' ) );
array( 'ORDER BY' => 'rev_id DESC' ) );
# If there are none, check the the highest ID with a lower timestamp
if( !$previousID ) {
# Get the highest older timestamp
$lastTimestamp = $db->selectField( 'revision', 'rev_timestamp',
array( 'rev_page' => $row->rev_page, "rev_timestamp < '{$row->rev_timestamp}'" ),
__FUNCTION__,
array( 'ORDER BY' => 'rev_timestamp DESC' ) );
# If there is one, let the highest rev ID win
if( $lastTimestamp ) {
$previousID = $db->selectField( 'revision', 'rev_id',
array( 'rev_page' => $row->rev_page, 'rev_timestamp' => $lastTimestamp ),
__FUNCTION__,
array( 'ORDER BY' => 'rev_id DESC' ) );
}
}
$previousID = intval($previousID);
if( $previousID != $row->rev_parent_id )
$changed++;