BUGFIX Fixing date/datetime handling in MSSQLDatabase

Fixing the date type to actually be "date", and not "datetime" so
that values are returned as "Y-m-d" for dates, and not "Y-m-d H:i:s".

Additionally, fixing a case where using the mssql functions would
return strange datetime formats. We need the datetime field values
in Y-m-d H:i:s. To get this working, we need to inspect the field type
when retrieving rows from the database and re-format the datetime
value at this point. This is done in MSSQLQuery::nextRecord()

code/MSSQLDatabase.php

@@ -983,7 +983,7 @@ public function boolean($values) {
 	 * @return string
 	 */
 	public function date($values) {
-		return 'datetime null';
+		return 'date null';
 	}
 
 	/**
@@ -1221,7 +1221,6 @@ public function sqlQueryToString(SQLQuery $query) {
 			$text = 'DELETE ';
 		} else {
 			$distinct = $query->getDistinct() ? 'DISTINCT ' : '';
-
 			// If there's a limit but no offset, just use 'TOP X'
 			// rather than the more complex sub-select method
 			if ($limit != 0 && $offset == 0) {
@@ -1775,7 +1774,20 @@ public function nextRecord() {
 		if(!is_resource($this->handle)) return false;
 
 		if($this->mssql) {
-			if($data = mssql_fetch_assoc($this->handle)) {
+			if($row = mssql_fetch_row($this->handle)) {
+				foreach($row as $i => $value) {
+					$field = mssql_fetch_field($this->handle, $i);
+
+					// fix datetime formatting from format "Jan  1 2012 12:00:00:000AM" to "2012-01-01 12:00:00"
+					// strtotime doesn't understand this format, so we need to do some modification of the value first
+					if($field->type == 'datetime' && $value) {
+						$value = date('Y-m-d H:i:s', strtotime(preg_replace('/:[0-9][0-9][0-9]([ap]m)$/i', ' \\1', $value)));
+					}
+
+					if(isset($value) || !isset($data[$field->name])) {
+						$data[$field->name] = $value;
+					}
+				}
 				return $data;
 			}
 		} else {

tests/MSSQLDatabaseQueryTest.php

@@ -0,0 +1,28 @@
+<?php
+class MSSQLDatabaseQueryTest extends SapphireTest {
+
+	public static $fixture_file = 'MSSQLDatabaseQueryTest.yml';
+
+	protected $extraDataObjects = array(
+		'MSSQLDatabaseQueryTestDataObject'	
+	);
+
+	public function testDateValueFormatting() {
+		$obj = $this->objFromFixture('MSSQLDatabaseQueryTestDataObject', 'test-data-1');
+		$this->assertEquals('2012-01-01', $obj->TestDate, 'Date field value is formatted correctly (Y-m-d)');
+	}
+
+	public function testDatetimeValueFormatting() {
+		$obj = $this->objFromFixture('MSSQLDatabaseQueryTestDataObject', 'test-data-1');
+		$this->assertEquals('2012-01-01 10:30:00', $obj->TestDatetime, 'Datetime field value is formatted correctly (Y-m-d H:i:s)');
+	}
+
+}
+class MSSQLDatabaseQueryTestDataObject extends DataObject implements TestOnly {
+
+	public static $db = array(
+		'TestDate' => 'Date',
+		'TestDatetime' => 'SS_Datetime'
+	);
+
+}

tests/MSSQLDatabaseQueryTest.yml

@@ -0,0 +1,5 @@
+MSSQLDatabaseQueryTestDataObject:
+   test-data-1:
+      TestDate: 2012-01-01
+      TestDatetime: 2012-01-01 10:30:00
+