Added method distinct() in Mvc\Model\Criteria

phalcon/mvc/model/criteria.zep

@@ -113,6 +113,15 @@ class Criteria implements CriteriaInterface, InjectionAwareInterface
 		return this;
 	}
 
+	/**
+	 * Sets SELECT DISTINCT / SELECT ALL flag
+	 */
+	 public function distinct(var distinct) -> <Criteria>
+	 {
+	 	let this->_params["distinct"] = distinct;
+	 	return this;
+	 }
+
 	/**
 	 * Sets the columns to be queried
 	 *

phalcon/mvc/model/query/builder.zep

@@ -100,7 +100,7 @@ class Builder implements BuilderInterface, InjectionAwareInterface
 			forUpdate, sharedLock, orderClause, offsetClause, joinsClause,
 			singleConditionArray, limit, offset, fromClause,
 			mergedConditions, mergedParams, mergedTypes,
-			singleCondition, singleParams, singleTypes, with;
+			singleCondition, singleParams, singleTypes, with, distinct;
 
 		if typeof params == "array" {
 
@@ -147,6 +147,13 @@ class Builder implements BuilderInterface, InjectionAwareInterface
 				}
 			}
 
+			/**
+			 * Assign SELECT DISTINCT / SELECT ALL clause
+			 */
+			if fetch distinct, params["distinct"] {
+				let this->_distinct = distinct;
+			}
+
 			/**
 			 * Assign FROM clause
 			 */