1 files changed, 35 insertions, 0 deletions
diff --git a/application/migrations/006_add_username_index.php b/application/migrations/006_add_username_index.php
new file mode 100644
index 000000000..1633a95a9
--- /dev/null
+++ b/application/migrations/006_add_username_index.php
@@ -0,0 +1,35 @@
+<?php
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+class Migration_Add_username_index extends CI_Migration {
+
+	public function up()
+	{
+		$prefix = $this->db->dbprefix;
+
+		if ($this->db->dbdriver == 'postgre') {
+			$this->db->query('
+				CREATE UNIQUE INDEX "'.$prefix.'users_username_idx" ON "'.$prefix.'users" ("username")
+			');
+		} else {
+			$this->db->query('
+				ALTER TABLE `'.$prefix.'users`
+				ADD UNIQUE `username` (`username`);
+			');
+		}
+	}
+
+	public function down()
+	{
+		$prefix = $this->db->dbprefix;
+
+		if ($this->db->dbdriver == 'postgre') {
+			$this->db->query('DROP INDEX "'.$prefix.'users_username_idx"');
+		} else {
+			$this->db->query("
+				ALTER TABLE `'.$prefix.'users`
+				DROP INDEX `username`;
+			");
+		}
+	}
+}