(Fixes issue 2365)

CHANGELOG

@@ -42,6 +42,7 @@ Version 1.1.8 work in progress
 - Enh #2341: More verbose log message for CModel::onUnsafeAttribute. Added model class (Sam Dark)
 - Enh #2357: Documented CWebApplication accessors with @property for better IDE autocomplete (Sam Dark)
 - Enh #2361: Added CDbConnection::pdoClass that allows to specify and use custom PDO wrapper class (Sam Dark)
+- Enh #2365: Added support for creating more complex index by using createIndex() of query builder. (Qiang)
 - Enh #2389: MessageCommand now accepts overwrite option determining if merge result will overwrite existing file (Sam Dark)
 - Enh #2424: CDbConnection::beginTransaction() will now trigger a trace message for better debugging (Y!!)
 - Enh #2450: Added Ctype extension check to Yii requirements checker (Sam Dark)

framework/db/schema/CDbSchema.php

@@ -524,7 +524,7 @@ public function dropForeignKey($name, $table)
 	 * @param string $name the name of the index. The name will be properly quoted by the method.
 	 * @param string $table the table that the new index will be created for. The table name will be properly quoted by the method.
 	 * @param string $column the column(s) that should be included in the index. If there are multiple columns, please separate them
-	 * by commas. The column names will be properly quoted by the method.
+	 * by commas. Each column name will be properly quoted by the method, unless a parenthesis is found in the name.
 	 * @param boolean $unique whether to add UNIQUE constraint on the created index.
 	 * @return string the SQL statement for creating a new index.
 	 * @since 1.1.6
@@ -534,7 +534,12 @@ public function createIndex($name, $table, $column, $unique=false)
 		$cols=array();
 		$columns=preg_split('/\s*,\s*/',$column,-1,PREG_SPLIT_NO_EMPTY);
 		foreach($columns as $col)
-			$cols[]=$this->quoteColumnName($col);
+		{
+			if(strpos($col,'(')!==false)
+				$cols[]=$col;
+			else
+				$cols[]=$this->quoteColumnName($col);
+		}
 		return ($unique ? 'CREATE UNIQUE INDEX ' : 'CREATE INDEX ')
 			. $this->quoteTableName($name).' ON '
 			. $this->quoteTableName($table).' ('.implode(', ',$cols).')';