Add Execute func to driver

Author: Philippe Lafoucrière

mysql.go

@@ -25,6 +25,9 @@ type Driver struct {
 	db *sql.DB
 }
 
+// make sure our driver still implements the driver.Driver interface
+var _ driver.Driver = (*Driver)(nil)
+
 const tableName = "schema_migrations"
 
 func (driver *Driver) Initialize(url string) error {
@@ -242,6 +245,12 @@ func (driver *Driver) Versions() (file.Versions, error) {
 	return versions, err
 }
 
+// Execute a SQL statement
+func (driver *Driver) Execute(statement string) error {
+	_, err := driver.db.Exec(statement)
+	return err
+}
+
 func init() {
 	driver.RegisterDriver("mysql", &Driver{})
 }