optimization : instead of reading each $conf['calendar_datefield'] for

matching YEAR() and MONTH(), use of SQL statement BETWEEN ... AND ... on the
date field + new index image_i5 on date_creation (default date field for
calendar)


git-svn-id: http://piwigo.org/svn/trunk@612 68402e56-0260-453c-a942-63ccdbb3a9ee

include/category_calendar.inc.php

@@ -86,10 +86,11 @@ if (isset($page['calendar_year']))
   $query = '
 SELECT DISTINCT(MONTH('.$conf['calendar_datefield'].')) AS month
      , COUNT(id) AS count
-  FROM '.IMAGES_TABLE.', '.IMAGE_CATEGORY_TABLE.'
+  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id
   '.$page['where'].'
-    AND id = image_id
-    AND YEAR('.$conf['calendar_datefield'].') = '.$page['calendar_year'].'
+    AND '.$conf['calendar_datefield'].'
+      BETWEEN \''.$page['calendar_year'].'-1-1\'
+      AND \''.$page['calendar_year'].'-12-31\'
   GROUP BY MONTH('.$conf['calendar_datefield'].')
 ;';
   $result = pwg_query($query);
@@ -157,11 +158,11 @@ elseif (!isset($page['calendar_day']))
   // the number of picture for this day : $calendar_days
   $query = '
 SELECT DISTINCT('.$conf['calendar_datefield'].') AS day, COUNT(id) AS count
-  FROM '.IMAGES_TABLE.', '.IMAGE_CATEGORY_TABLE.'
+  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id
   '.$page['where'].'
-    AND id = image_id
-    AND YEAR('.$conf['calendar_datefield'].') = '.$page['calendar_year'].'
-    AND MONTH('.$conf['calendar_datefield'].') = '.$page['calendar_month'].'
+    AND '.$conf['calendar_datefield'].'
+      BETWEEN \''.$page['calendar_year'].'-'.$page['calendar_month'].'-1\'
+      AND \''.$page['calendar_year'].'-'.$page['calendar_month'].'-31\'
   GROUP BY day
 ;';
   $result = pwg_query($query);
@@ -182,10 +183,9 @@ elseif (isset($page['calendar_day']))
   
   $query = '
 SELECT category_id AS category, COUNT(id) AS count
-  FROM '.IMAGES_TABLE.', '.IMAGE_CATEGORY_TABLE.'
+  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id
   '.$page['where'].'
     AND '.$conf['calendar_datefield'].' = \''.$page['calendar_date'].'\'
-    AND id = image_id
   GROUP BY category_id
 ;';
   $result = pwg_query($query);
@@ -220,10 +220,11 @@ if (!isset($page['calendar_year']))
   {
     $query = '
 SELECT file,tn_ext,'.$conf['calendar_datefield'].',path
-  FROM '.IMAGES_TABLE.', '.IMAGE_CATEGORY_TABLE.'
+  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id
   '.$page['where'].'
-    AND YEAR('.$conf['calendar_datefield'].') = '.$calendar_year.'
-    AND id = image_id
+    AND '.$conf['calendar_datefield'].'
+      BETWEEN \''.$calendar_year.'-1-1\'
+      AND \''.$calendar_year.'-12-31\'
   ORDER BY RAND()
   LIMIT 0,1
 ;';
@@ -265,11 +266,11 @@ elseif (!isset($page['calendar_month']))
   {
     $query = '
 SELECT file,tn_ext,'.$conf['calendar_datefield'].',path
-  FROM '.IMAGES_TABLE.', '.IMAGE_CATEGORY_TABLE.'
+  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id
   '.$page['where'].'
-    AND YEAR('.$conf['calendar_datefield'].') = '.$page['calendar_year'].'
-    AND MONTH('.$conf['calendar_datefield'].') = '.$calendar_month.'
-    AND id = image_id
+    AND '.$conf['calendar_datefield'].'
+      BETWEEN \''.$page['calendar_year'].'-'.$calendar_month.'-1\'
+      AND \''.$page['calendar_year'].'-'.$calendar_month.'-31\'
   ORDER BY RAND()
   LIMIT 0,1
 ;';
@@ -319,10 +320,9 @@ elseif (!isset($page['calendar_day']))
   {
     $query = '
 SELECT file,tn_ext,'.$conf['calendar_datefield'].',path
-  FROM '.IMAGES_TABLE.', '.IMAGE_CATEGORY_TABLE.'
+  FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id
   '.$page['where'].'
     AND '.$conf['calendar_datefield'].' = \''.$calendar_day.'\'
-    AND id = image_id
   ORDER BY RAND()
   LIMIT 0,1
 ;';

install/dbscheme.txt

@@ -140,5 +140,6 @@ index:images_i2         table:images         column:date_available
 index:images_i1         table:images         column:storage_category_id
 index:images_i3         table:images         column:average_rate
 index:images_i4         table:images         column:hit
+index:images_i5         table:images         column:date_creation
 index:sites_ui1         table:sites          column:galleries_url
 index:users_ui1         table:users          column:username

install/phpwebgallery_structure.sql

@@ -145,7 +145,8 @@ CREATE TABLE phpwebgallery_images (
   KEY images_i2 (date_available),
   KEY images_i1 (storage_category_id),
   KEY images_i3 (average_rate),
-  KEY images_i4 (hit)
+  KEY images_i4 (hit),
+  KEY images_i5 (date_creation)
 ) TYPE=MyISAM;
 
 --