diff --git a/drivers/clickhouse.go b/drivers/clickhouse.go
index 4b17bbf..1ca98cd 100644
--- a/drivers/clickhouse.go
+++ b/drivers/clickhouse.go
@@ -24,7 +24,7 @@ func (c Clickhouse) Transaction(f func(executor contracts.SqlExecutor) error) er
 	return errors.New("transaction is not supported")
 }
 
-func dollarNParamBindWrapper(sql string) (result string) {
+func DollarNParamBindWrapper(sql string) (result string) {
 	var (
 		parts    = strings.Split(sql, "?")
 		partsLen = len(parts)
@@ -77,6 +77,6 @@ func ClickHouseConnector(config contracts.Fields, events contracts.EventDispatch
 	db.SetMaxOpenConns(utils.GetIntField(config, "max_connections"))
 	db.SetMaxIdleConns(utils.GetIntField(config, "max_idles"))
 	return &Clickhouse{
-		support.NewExecutor(db, events, dollarNParamBindWrapper),
+		support.NewExecutor(db, events, DollarNParamBindWrapper),
 	}
 }
diff --git a/drivers/postgresql.go b/drivers/postgresql.go
index b4647c7..6df5b9b 100644
--- a/drivers/postgresql.go
+++ b/drivers/postgresql.go
@@ -28,5 +28,5 @@ func PostgresSqlConnector(config contracts.Fields, events contracts.EventDispatc
 	db.SetMaxOpenConns(utils.GetIntField(config, "max_connections"))
 	db.SetMaxIdleConns(utils.GetIntField(config, "max_idles"))
 
-	return &PostgresSQL{WithWrapper(db, events, dollarNParamBindWrapper)}
+	return &PostgresSQL{WithWrapper(db, events, DollarNParamBindWrapper)}
 }