From 44831d26e2c2bb5583f5e7aa512b0e3a719117d6 Mon Sep 17 00:00:00 2001
From: Carsten Schmitz <carsten.schmitz@limesurvey.org>
Date: Tue, 19 Jun 2012 11:43:56 +0200
Subject: [PATCH] Dev MSSQL breaks on Active Record when column has a default
 value of NULL - see https://github.com/yiisoft/yii/issues/842

---
 .../db/schema/mssql/CMssqlColumnSchema.php     | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/framework/db/schema/mssql/CMssqlColumnSchema.php b/framework/db/schema/mssql/CMssqlColumnSchema.php
index 88dc6540640..32c7f424fe8 100644
--- a/framework/db/schema/mssql/CMssqlColumnSchema.php
+++ b/framework/db/schema/mssql/CMssqlColumnSchema.php
@@ -19,6 +19,24 @@
  */
 class CMssqlColumnSchema extends CDbColumnSchema
 {
+
+
+
+     /**
+     * Initializes the column with its DB type and default value.
+     * This sets up the column's PHP type, size, precision, scale as well as default value.
+     * @param string $dbType the column's DB type
+     * @param mixed $defaultValue the default value
+     */
+     public function init($dbType, $defaultValue)
+     {
+        if ($defaultValue=='(NULL)')
+        {
+            $defaultValue=null;
+        }
+        parent::init($dbType, $defaultValue);
+     }
+
 	/**
 	 * Extracts the PHP type from DB type.
 	 * @param string $dbType DB type