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improved function update_category essentially by using INNER JOIN instead of

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LEFT JOIN


git-svn-id: http://piwigo.org/svn/branches/release-1_3@281 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
z0rglub
2004-01-15 23:19:51 +00:00
parent 384ec739f6
commit b8d74dde50
1 changed files with 8 additions and 12 deletions
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admin/include/functions.php
+8 -12
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@@ -379,26 +379,22 @@ function update_category( $id = 'all' )
$query.= ' FROM '.PREFIX_TABLE.'image_category';
$query.= ' WHERE category_id = '.$id;
$query.= ';';
$row = mysql_fetch_array( mysql_query( $query ) );
$query = 'UPDATE '.PREFIX_TABLE.'categories';
$query.= ' SET nb_images = '.$row['nb_images'];
$query.= ' WHERE id = '.$id;
$query.= ';';
mysql_query( $query );
list( $nb_images ) = mysql_fetch_array( mysql_query( $query ) );
// updating the date_last
$query = 'SELECT date_available';
$query = 'SELECT MAX(date_available) AS date_available';
$query.= ' FROM '.PREFIX_TABLE.'images';
$query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category ON id = image_id';
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category ON id = image_id';
$query.= ' WHERE category_id = '.$id;
$query.= ' ORDER BY date_available DESC';
$query.= ' LIMIT 0,1';
$query.= ';';
$row = mysql_fetch_array( mysql_query( $query ) );
list( $date_available ) = mysql_fetch_array( mysql_query( $query ) );
$query = 'UPDATE '.PREFIX_TABLE.'categories';
$query.= " SET date_last = '".$row['date_available']."'";
$query.= " SET date_last = '".$date_available."'";
$query.= ' SET nb_images = '.$nb_images;
$query.= ' WHERE id = '.$id;
$query.= ';';
mysql_query( $query );
// updating the representative_picture_id : if the representative
// picture of the category is not any more linked to the category, we
// have to set representative_picture_id to NULL