SQL Server：openquery插入链接服务器

Question

如何使用不存在行的条件将数据插入到链接服务器（oracle）中？

如果该表中尚不存在employee，我想插入employeecode表

INSERT INTO OPENQUERY(ORACLEX,
  'SELECT EMPCODE, EMPNAME FROM AX.EMPLOYEE') -- I want a where clause here

Select EID, ENAME FROM EMPDATA

Answer 1

您可能实际上必须从表中读取两次

   INSERT INTO OPENQUERY(ORACLEX,
  'SELECT EMPCODE, EMPNAME FROM AX.EMPLOYEE') -- I want a where clause here
   Select D.EID, D.ENAME
     FROM EMPDATA D
LEFT JOIN OPENQUERY(ORACLEX,
  'SELECT EMPCODE, EMPNAME FROM AX.EMPLOYEE') OQ ON OQ.EMPCODE = D.EID
    WHERE QQ.EMPCODE IS NULL;