fix: decimal problem

@@ -125,8 +125,8 @@ var (
 	Int        SQLType = "INT"
 	BigInt     SQLType = "BIGINT"
 	Float      SQLType = "FLOAT"
-	DECIMALV2  SQLType = "DECIMAL(20,15)" //"DECIMALV2"
-	DECIMAL279 SQLType = "DECIMAL(20,15)"
+	DECIMALV2  SQLType = "DECIMAL(35,15)" //"DECIMALV2"
+	DECIMAL279 SQLType = "DECIMAL(35,15)"
 	Date       SQLType = "DATE"
 	Datetime   SQLType = "DATETIME"
 )