public static boolean isTextType(int sqlType) {
        if (sqlType == Types.CHAR || sqlType == Types.VARCHAR || sqlType == Types.CLOB || sqlType == Types.LONGVARCHAR
            || sqlType == Types.NCHAR || sqlType == Types.NVARCHAR || sqlType == Types.NCLOB
            || sqlType == Types.LONGNVARCHAR) {
            return true;
        } else {
            return false;
        }
    }
Check whether the given SQL type is numeric.
node/etl/src/main/java/com/alibaba/otter/node/etl/common/db/utils/SqlUtils.java