From: skodak <skodak>
Date: Wed, 16 Apr 2008 15:48:47 +0000 (+0000)
Subject: MDL-12893 fixed sorting of date fields in pg - credit goes to David; merged from... 
X-Git-Url: http://git.mjollnir.org/gw?a=commitdiff_plain;h=88145e9d08e5f29fbd44f01d2c9dca18f529ece0;p=moodle.git

MDL-12893 fixed sorting of date fields in pg - credit goes to David; merged from MOODLE_19_STABLE
---

diff --git a/mod/data/field/date/field.class.php b/mod/data/field/date/field.class.php
index bc35d4aea2..50236392de 100755
--- a/mod/data/field/date/field.class.php
+++ b/mod/data/field/date/field.class.php
@@ -113,7 +113,18 @@ class data_field_date extends data_field_base {
     }
 
     function get_sort_sql($fieldname) {
-        return 'CAST('.$fieldname.' AS unsigned)';
+         global $CFG;
+ 
+         switch ($CFG->dbfamily) {
+             case 'postgres':
+             case 'mssql':
+                 return 'CAST('.$fieldname.' AS bigint)';
+             case 'oracle':
+                 return 'TO_NUMBER('.$fieldname.')';
+             case 'mysql':
+             default:
+                 return 'CAST('.$fieldname.' AS signed)';
+         }
     }