查找約束父鍵

Question

我得到一個異常

ORA-02291：完整性約束（ADS.ADS_JOB_FAMILIES_F03）違反 - 父鍵沒有找到

我找到了約束表中插入上午。

如何查找父鍵和子鍵...（列）。

注：我使用的是Oracle

Answer 1

父表：

select * from all_constraints 
     where constraint_name in (
       select R_CONSTRAINT_NAME 
       from all_constraints 
       where constraint_name = 'ADS_JOB_FAMILIES_F03'); 

父列：

select * 
    from all_cons_columns 
where constraint_name in (
     select constraint_name 
     from all_constraints 
     where constraint_name in (
       select R_CONSTRAINT_NAME 
       from all_constraints 
       where constraint_name = 'ADS_JOB_FAMILIES_F03')); 

這是不完全完美的，因爲它忽略了約束的所有者。但我認爲它會爲你工作。

編輯：我現在甚至發現this。這會給這樣一個查詢：

SELECT a.table_name, a.column_name, a.constraint_name, c.owner, 
     -- referenced pk 
     c.r_owner, c_pk.table_name r_table_name, c_pk.constraint_name r_pk 
    FROM all_cons_columns a 
    JOIN all_constraints c ON a.owner = c.owner 
         AND a.constraint_name = c.constraint_name 
    JOIN all_constraints c_pk ON c.r_owner = c_pk.owner 
          AND c.r_constraint_name = c_pk.constraint_name 
WHERE a.constraint_name = 'ADS_JOB_FAMILIES_F03';