Added migration file for index on col_gridsquare and col_vucc_grids to speed up VUCC award a bit.

application/config/migration.php

@@ -21,7 +21,7 @@ $config['migration_enabled'] = TRUE;
 | be upgraded / downgraded to.
 |
 */
-$config['migration_version'] = 52;
+$config['migration_version'] = 53;
 
 /*
 |--------------------------------------------------------------------------

application/migrations/053_gridsquare_index.php

@@ -0,0 +1,24 @@
+<?php
+
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+class Migration_gridsquare_index extends CI_Migration {
+
+    public function up()
+    {
+        $sql = "CREATE INDEX HRD_IDX_COL_GRIDSQUARE USING BTREE ON " . $this->config->item('table_name') . " (COL_GRIDSQUARE)";
+        $this->db->query($sql);
+
+        $sql = "CREATE INDEX HRD_IDX_COL_VUCC_GRIDS USING BTREE ON " . $this->config->item('table_name') ." (COL_VUCC_GRIDS)";
+        $this->db->query($sql);
+    }
+
+    public function down()
+    {
+        $sql = "ALTER TABLE " . $this->config->item('table_name') . " DROP INDEX HRD_IDX_COL_GRIDSQUARE";
+        $this->db->query($sql);
+
+        $sql = "ALTER TABLE " . $this->config->item('table_name') . " DROP INDEX HRD_IDX_COL_VUCC_GRIDS";
+        $this->db->query($sql);
+    }
+}