单行子查询返回多行：ORA-01427

Question

UPDATE DESIGNATION_REVISED A SET A.DCODE_ORG=(SELECT D.DCODE_ORG FROM DESIGNMAST_DUP D WHERE D.DNAME=A.DNAME)

以上update投掷

  

单行子查询返回多行：ORA-01427

Answer 1

我认为在您的DESIGNMAST_DUP表中名称是重复的，因此内部查询返回多行。 试试这个： -

UPDATE DESIGNATION_REVISED A SET A.DCODE_ORG=(SELECT distinct D.DCODE_ORG FROM DESIGNMAST_DUP D WHERE D.DNAME=A.DNAME)