diff --git a/VERSION b/VERSION
index 1ce3eb84..47b5cd7e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-Version 2.4.5-stable+timestamp.2013.04.03.09.49.46
+Version 2.4.5-stable+timestamp.2013.04.03.11.31.36
diff --git a/gluon/dal.py b/gluon/dal.py
index c96f04a9..46e395e7 100644
--- a/gluon/dal.py
+++ b/gluon/dal.py
@@ -2424,6 +2424,9 @@ class MySQLAdapter(BaseAdapter):
     def EPOCH(self, first):
         return "UNIX_TIMESTAMP(%s)" % self.expand(first)
 
+    def CONCAT(self, *items):
+        return 'CONCAT(%s)' % ','.join(self.expand(x,'string') for x in items)
+
     def REGEXP(self,first,second):
         return '(%s REGEXP %s)' % (self.expand(first),
                                    self.expand(second,'string'))