#459786 by DamZ: Remove all_fields from extended queries to prevent breaking...

#459786 by DamZ: Remove all_fields from extended queries to prevent breaking under PostgreSQL and certain MySQL versions.

includes/database/select.inc

@@ -568,6 +568,12 @@ public function countQuery() {
     $expressions =& $count->getExpressions();
     $expressions = array();
 
+    // Also remove 'all_fields' statements, which are expanded into tablename.*
+    // when the query is executed.
+    foreach ($count->tables as $alias => &$table) {
+      unset($table['all_fields']);
+    }
+
     // Ordering a count query is a waste of cycles, and breaks on some
     // databases anyway.
     $orders = &$count->getOrderBy();
@@ -1030,6 +1036,13 @@ public function countQuery() {
     $expressions =& $count->getExpressions();
     $expressions = array();
 
+
+    // Also remove 'all_fields' statements, which are expanded into tablename.*
+    // when the query is executed.
+    foreach ($count->tables as $alias => &$table) {
+      unset($table['all_fields']);
+    }
+
     // Ordering a count query is a waste of cycles, and breaks on some
     // databases anyway.
     $orders = &$count->getOrderBy();