diff --git a/doc/api.md b/doc/api.md
index f22d07f..8b7fa43 100644
--- a/doc/api.md
+++ b/doc/api.md
@@ -81,7 +81,7 @@ $result2 = $result->where($array)    // for each key-value pair, call $result->w
 $result2 = $result->whereNot($array) // for each key-value pair, call $result->whereNot($key, $value)
 ```
 
-## Selected columns, Order and Limit
+## Selected columns, Group, Order and Limit
 
 Note that you can order association results, but you cannot use `LIMIT` on them.
 
@@ -89,6 +89,9 @@ Note that you can order association results, but you cannot use `LIMIT` on them.
 $result2 = $result->select($expr)  // identfiers NOT escaped, so expressions are possible
     // multiple calls are joined with a comma
 
+// $column group by
+$result2 = $result->groupBy($column);
+
 // $column will be escaped
 $result2 = $result->orderBy($column);
 $result2 = $result->orderBy($column, 'ASC');
diff --git a/src/LessQL/Database.php b/src/LessQL/Database.php
index b56e325..d2f08b3 100644
--- a/src/LessQL/Database.php
+++ b/src/LessQL/Database.php
@@ -453,6 +453,7 @@ public function setIdentifierDelimiter($d)
      * @param string $table
      * @param mixed $exprs
      * @param array $where
+     * @param array $groupBy
      * @param array $orderBy
      * @param int|null $limitCount
      * @param int|null $limitOffset
@@ -464,6 +465,7 @@ public function select($table, $options = array())
         $options = array_merge(array(
             'expr' => null,
             'where' => array(),
+            'groupBy' => array(),
             'orderBy' => array(),
             'limitCount' => null,
             'limitOffset' => null,
@@ -484,7 +486,7 @@ public function select($table, $options = array())
         $table = $this->rewriteTable($table);
         $query .= " FROM " . $this->quoteIdentifier($table);
 
-        $query .= $this->getSuffix($options['where'], $options['orderBy'], $options['limitCount'], $options['limitOffset']);
+        $query .= $this->getSuffix($options['where'], $options['groupBy'], $options['orderBy'], $options['limitCount'], $options['limitOffset']);
 
         $this->onQuery($query, $options['params']);
 
@@ -762,12 +764,13 @@ public function delete($table, $where = array(), $params = array())
      * Return WHERE/LIMIT/ORDER suffix for queries
      *
      * @param array $where
+     * @param array $groupBy
      * @param array $orderBy
      * @param int|null $limitCount
      * @param int|null $limitOffset
      * @return string
      */
-    public function getSuffix($where, $orderBy = array(), $limitCount = null, $limitOffset = null)
+    public function getSuffix($where,$groupBy = array(), $orderBy = array(), $limitCount = null, $limitOffset = null)
     {
         $suffix = "";
 
@@ -775,6 +778,10 @@ public function getSuffix($where, $orderBy = array(), $limitCount = null, $limit
             $suffix .= " WHERE (" . implode(") AND (", $where) . ")";
         }
 
+        if (!empty($groupBy)) {
+            $suffix .= " GROUP BY " . implode(", ", $groupBy);
+        }
+
         if (!empty($orderBy)) {
             $suffix .= " ORDER BY " . implode(", ", $orderBy);
         }