对于clob字段，添加/修改sql数据集时，预览可以正常显示；

但是保存sql后，预览报错，做成明细表也报错。

展示时，会默认添加as varchar2(4000) 做限制，这个能修改么？

报错信息如下：

出错节点ID: [ 79b97b2f-f917-fcb4-69cd-451b5491789b ] 错误代码:62400001The SQL : {   select "v0" "__fcol_0" from (  select    "x"."v0",    rownum "rn"  from (    select cast("T_972469"."DETAIL_MSG" as varchar2(4000)) "v0"    from (select temp.detail_msg1 || temp.detail_msg2 as detail_msg from (select substr(detail_msg, 0, 1000) as detail_msg1, substr(detail_msg, 1001, 2000) as detail_msg2 from its_cust_info_break_raw_sub where UNIQUE_MARK = 'b92c97bed1a14d909aca63d287850cb4')temp ) "T_972469"  ) "x"  where rownum <= (0 + 5000) ) where "rn" > 0 order by "rn"  } is wrong,  please check!ORA-64203: 目标缓冲区太小, 无法容纳字符集转换之后的 CLOB 数据。