diff --git a/lib/adapters/mysql.js b/lib/adapters/mysql.js
index 5f66b195..d25d771a 100644
--- a/lib/adapters/mysql.js
+++ b/lib/adapters/mysql.js
@@ -104,7 +104,13 @@ MySQL.prototype.toDatabase = function (prop, val) {
             return  this.toDatabase(prop, val[0]) +
                     ' AND ' +
                     this.toDatabase(prop, val[1]);
-        }
+        } else if (operator == 'inq' || operator == 'nin') {
+    		if (!(val.propertyIsEnumerable('length')) && typeof val === 'object' && typeof val.length === 'number') { //if value is array
+				return val.join(',');
+			} else {
+				return val;
+			}
+		}
     }
     if (prop.type.name === 'Number') return val;
     if (prop.type.name === 'Date') {
@@ -205,22 +211,31 @@ MySQL.prototype.all = function all(model, filter, callback) {
                 var sqlCond = keyEscaped;
                 switch (condType) {
                     case 'gt':
-                    sqlCond += ' > ';
-                    break;
+	                    sqlCond += ' > ';
+	                    break;
                     case 'gte':
-                    sqlCond += ' >= ';
-                    break;
+	                    sqlCond += ' >= ';
+	                    break;
                     case 'lt':
-                    sqlCond += ' < ';
-                    break;
+	                    sqlCond += ' < ';
+	                    break;
                     case 'lte':
-                    sqlCond += ' <= ';
-                    break;
+	                    sqlCond += ' <= ';
+	                    break;
                     case 'between':
-                    sqlCond += ' BETWEEN ';
-                    break;
+	                    sqlCond += ' BETWEEN ';
+	                    break;
+					case 'inq':
+						sqlCond += ' IN ';
+						break;
+					case 'nin':
+						sqlCond += ' NOT IN ';
+						break;
+					case 'neq':
+						sqlCond + ' != ';
+						break;
                 }
-                sqlCond += val;
+                sqlCond += (condType == 'inq' || condType == 'nin') ? '(' + val + ')' : val;
                 cs.push(sqlCond);
             } else {
                 cs.push(keyEscaped + ' = ' + val);