ORA-00932：数据类型不一致：预期 NUMBER 在 INFORMATICA PowerCenter 中得到 CLOB

Question

尝试在 informatica 中运行会话时出现以下错误。

ERROR  10/11/2023 2:56:21 PM  node02  READER_1_1_1  RR_4035  SQL Error [
ORA-00932: inconsistent datatypes: expected NUMBER got CLOB

我在源限定符中添加了以下 SQL 查询，以从源中的 CLOB 中提取数据。

select objectid,
       db_instance_seq,

       REGEXP_SUBSTR(
         DATA,
         '\|(RES_GetResData_Public_ScreenPrint.*?)\|(.*?)\|(.*?)\|(.*?)\|',
         1,
         column_value,
         NULL,
         1
       ) AS TEXT
from   TEST
       cross join table(
         
cast(
           multiset(
             select level
             from   dual 

             where DATA LIKE '%RES_GetResData_Public_ScreenPrint%'

             connect by level <= regexp_count(
                                   DATA,
                                   '\|(RES_GetResData_Public_ScreenPrint.*?)\|(.*?)\|(.*?)\|(.*?)\|'
                                 )
                  
) 
           as sys.odcinumberlist
         )
       )

Answer 1

您可以使用简单的字符串函数（速度更快）和递归子查询分解子句，而不是使用正则表达式：

WITH rsqfc (objectid, db_instance_seq, data, spos, dpos, epos) AS (
  SELECT objectid,
         db_instance_seq,
         data,
         INSTR(data, '|RES_GetResData_Public_ScreenPrint', 1),
         INSTR(data, '|', INSTR(data, '|RES_GetResData_Public_ScreenPrint', 1) + 34, 1),
         INSTR(data, '|', INSTR(data, '|RES_GetResData_Public_ScreenPrint', 1) + 34, 4)
  FROM   test
UNION ALL
  SELECT objectid,
         db_instance_seq,
         data,
         INSTR(data, '|RES_GetResData_Public_ScreenPrint', epos + 1),
         INSTR(data, '|', INSTR(data, '|RES_GetResData_Public_ScreenPrint', epos + 1) + 34, 1),
         INSTR(data, '|', INSTR(data, '|RES_GetResData_Public_ScreenPrint', epos + 1) + 34, 4)
  FROM   rsqfc
  WHERE  spos > 0
  AND    epos > 0
)
SEARCH DEPTH FIRST BY objectid, db_instance_seq SET order_id
SELECT objectid,
       db_instance_seq,
       SUBSTR(data, spos + 1, dpos - spos - 1) AS text
from   rsqfc
WHERE  spos > 0
AND    epos > 0;

对于样本数据：

CREATE TABLE test (objectid, db_instance_seq, data) AS
  SELECT 1,
         1,
         EMPTY_CLOB()
         || '|RES_GetResData_Public_ScreenPrint - AAAAA|BBBB|CCCC|DDDD|' || CHR(10)
         || 'XXXX|RES_GetResData_Public_ScreenPrint - EEEEE|F||H|I|J|K' || CHR(10)
  FROM   DUAL;

输出：

对象ID	DB_INSTANCE_SEQ	文字
1	1	RES_GetResData_Public_ScreenPrint - AAAAA
1	1	RES_GetResData_Public_ScreenPrint - EEEEE

小提琴