regexp_replace vs regexp_substr 并使用将数据从一个单元格移动到多个单元格

Question

我不断收到 [Teradata Database] [9134] 输出超出缓冲区限制。

select 
MHKAUDITLOGINTERNALID as id, 
Cast(MHK_CONTENT as CLOB)as MHK_CONTENT 
from vcoreMEDHOK_MHK_Audit 
Where cast(AUDITDATETIME as Date) >= '2021/08/15' )
--- and id ='31181086' )
select ID, regexp_replace(Token, '<b>|<\/b>') -- trim everything up to '<b>' 
FROM TABLE (RegExp_Split_To_Table(t.id, t.MHK_CONTENT,'<BR/> *', 'i') -- split whenever '<\/b>' occurs 
RETURNS ( id BIGINT, TokenNum INT, Token VARCHAR(35000) CHARACTER SET LATIN)) AS dt 

有人知道如何解决这个问题吗？ [Teradata Database] [9134] 输入超出缓冲区大小限制。

with t as
 (
   select MHKAUDITLOGINTERNALID  as id, cast(MHK_CONTENT as clob) as MHK_CONTENT
   from vcoreMEDHOK_MHK_Audit as ma
   Where cast(ma.AUDITDATETIME as Date) >= '2021/08/15'
   
)
SELECT
  DISTINCT id,  
  regexp_substr(MHK_CONTENT, '.*<b>\K.*') -- trim everything up to '<b>'
FROM TABLE (RegExp_Split_To_Table(t.ID, t.MHK_CONTENT, '<\/b>', 'i')
     RETURNS (ID BIGINT, tok_num INTEGER, 
MHK_CONTENT VARCHAR(100) CHARACTER SET LATIN)) AS t   ```

---[Teradata Database] [9134] Input exceeds the buffer size limit.

Answer 1

根据您之前的问题扩展 SQL，这似乎是您想要的：

with t as
 (
   select MHKAUDITLOGINTERNALID  as id, cast(MHK_CONTENT as clob) as MHK_CONTENT
   from vcoreMEDHOK_MHK_Audit as ma
   Where cast(ma.AUDITDATETIME as Date) >= '2021/08/15'
   -- Where ma.AUDITDATETIME >= DATE '2021-08-15'
   -- recommended to use DATE literals, the timestamp is here automatically converted to date  
   
)

select regexp_replace(Token, '<b>|<\/b>') -- remove tags
   ,dt.* 
FROM TABLE (RegExp_Split_To_Table(t.id, t.MHK_CONTENT,'<BR\/> *', 'i') -- split whenever '<BR/>' occurs 
RETURNS ( id INT, TokenNum INT,
         Token VARCHAR(32000) CHARACTER SET LATIN)
        ) AS dt                              
      

关于错误：尝试将 size 令牌大小增加到最大。