Oracle获得外键 [英] Oracle get foreign keys

问题描述

我想把所有的外键都放在一个模式中，像这样。
假设我有表格

users（id，username，pass，address_id）

和

地址（id，text）

我已经在users-address_id上为地址中的id列定义了一个FK。
我应该如何编写一个查询来返回FK列：
users，address_id，addresses，id？
$ b

谢谢！ p>

  SELECT * 
 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 C.R_OWNER ='TRWBI'
  

解决方案

pre
$ p $ SELECT a.table_name，a.column_name， uc.table_name，uc.column_name
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
和c.r_constra int_name = c_pk.constraint_name
加入USER_CONS_COLUMNS uc上的uc.constraint_name = c.r_constraint_name
WHERE C.R_OWNER ='myschema'


I'd like to get all foreign keys in a schema, like this. Let's say I have tables

users(id, username, pass, address_id)

and

addresses(id, text)

I have defined a FK on users-address_id to the id column in addresses. How should I write a query that would return me the FK columns like : users, address_id, addresses, id ?

Thanks!

SELECT *
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  C.R_OWNER = 'TRWBI'

解决方案

found it!

this is what i was looking for, thanks everybody for helping.

SELECT a.table_name, a.column_name, uc.table_name, uc.column_name 
                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
                join USER_CONS_COLUMNS uc on uc.constraint_name = c.r_constraint_name
                WHERE  C.R_OWNER = 'myschema'

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