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Performances improved : replacing the useless LEFT JOIN by INNER JOIN

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git-svn-id: http://piwigo.org/svn/branches/release-1_3@301 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
z0rglub
2004-01-19 21:18:34 +00:00
parent b81a4dbc62
commit 982bc009b6
3 changed files with 14 additions and 10 deletions
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picture.php
+9 -5
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@@ -43,7 +43,8 @@ if ( is_numeric( $page['cat'] ) )
$query.= ',category_id';
}
$query.= ' FROM '.PREFIX_TABLE.'images';
$query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic ON id = ic.image_id';
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' ON id = ic.image_id';
$query.= $page['where'];
$query.= ' AND id = '.$_GET['image_id'];
$query.= $conf['order_by'];
@@ -77,7 +78,8 @@ $page['storage_category_id'] = $row['storage_category_id'];
// retrieving the number of the picture in its category (in order)
$query = 'SELECT DISTINCT(id)';
$query.= ' FROM '.PREFIX_TABLE.'images';
$query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic ON id = ic.image_id';
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' ON id = ic.image_id';
$query.= $page['where'];
$query.= $conf['order_by'];
$query.= ';';
@@ -139,7 +141,7 @@ if ( isset( $_GET['add_fav'] ) )
}
$query = 'SELECT id';
$query.= ' FROM '.PREFIX_TABLE.'images';
$query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' ON id = ic.image_id';
$query.= $page['where'];
$query.= $conf['order_by'];
@@ -168,7 +170,8 @@ if ( $page['num'] < $page['cat_nb_images']-1 )
$next = $page['num'] + 1;
$query = 'SELECT DISTINCT(id),name,file,tn_ext,storage_category_id';
$query.= ' FROM '.PREFIX_TABLE.'images';
$query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic ON id=ic.image_id';
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' ON id=ic.image_id';
$query.= $page['where'];
$query.= $conf['order_by'];
$query.= ' LIMIT '.$next.',1';
@@ -276,7 +279,8 @@ if ( $page['num'] >= 1 )
$prev = $page['num'] - 1;
$query = 'SELECT DISTINCT(id),name,file,tn_ext,storage_category_id';
$query.= ' FROM '.PREFIX_TABLE.'images';
$query.= ' LEFT JOIN '.PREFIX_TABLE.'image_category AS ic ON id=ic.image_id';
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' ON id=ic.image_id';
$query.= $page['where'];
$query.= $conf['order_by'];
$query.= ' LIMIT '.$prev.',1';