ing

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select *
  from GUPROPOSALCLAUSES t,GUPROPOSALMAIN tt
         where t.PROPOSALNO = tt.PROPOSALNO(+)
           --and t.PROPOSALNO = tt.PROPOSALNO (+)
           and tt.PROPOSALNO is null
           
delete from GUPOLICYCOPYPAYMENTPLANDETAIL
       where policyno=‘U604131516000277‘;

 
 
 
select (select a.table_name
          from user_constraints a
           where a.constraint_name = c.r_constraint_name) 主表表名,
           c.r_constraint_name 主表主键键约束名,
           c.table_name 从表表名,
           c.constraint_name 从表外键约束名,c.*
         from user_constraints c
        where c.constraint_type = ‘R‘ and c.constraint_name=‘FK_GUPOLICY_R56‘;

ing

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原文地址：http://www.cnblogs.com/zydev/p/5286700.html