你可以从ALL_CONSTRAINTS视图中查询:

SELECT table_name
FROM ALL_CONSTRAINTS
WHERE constraint_type = 'R' -- "Referential integrity"
  AND r_constraint_name IN
    ( SELECT constraint_name
      FROM ALL_CONSTRAINTS
      WHERE table_name = 'EMP'
        AND constraint_type IN ('U', 'P') -- "Unique" or "Primary key"
    );

在下面的查询中用emp替换[Your TABLE]

select owner,constraint_name,constraint_type,table_name,r_owner,r_constraint_name
  from all_constraints 
 where constraint_type='R'
   and r_constraint_name in (select constraint_name 
                               from all_constraints 
                              where constraint_type in ('P','U') 
                                and table_name='[YOUR TABLE]');

这样怎么样:

SELECT c.constraint_name, c.constraint_type, c2.constraint_name, c2.constraint_type, c2.table_name
  FROM dba_constraints c JOIN dba_constraints c2 ON (c.r_constraint_name = c2.constraint_name)
 WHERE c.table_name = <TABLE_OF_INTEREST>
   AND c.constraint_TYPE = 'R';

不。在Oracle SQL Developer中没有这样的选项。

您必须手动执行查询或使用其他工具(例如PLSQL Developer有这样的选项)。下面的SQL是PLSQL开发者使用的SQL:

select table_name, constraint_name, status, owner
from all_constraints
where r_owner = :r_owner
and constraint_type = 'R'
and r_constraint_name in
 (
   select constraint_name from all_constraints
   where constraint_type in ('P', 'U')
   and table_name = :r_table_name
   and owner = :r_owner
 )
order by table_name, constraint_name

其中r_owner是模式，r_table_name是要查找引用的表。名称区分大小写

要小心，因为在Oracle SQL Developer的reports选项卡上有一个选项“All tables / Dependencies”，这个选项来自ALL_DEPENDENCIES，它指的是“当前用户可访问的过程、包、函数、包体和触发器之间的依赖关系，包括对没有任何数据库链接创建的视图的依赖关系”。那么，这份报告对你的问题毫无价值。

要将其作为扩展添加到SQL Developer，请执行以下操作:

将下面的代码保存到一个xml文件(例如fk_ref.xml):

<items>
    <item type="editor" node="TableNode" vertical="true">
    <title><![CDATA[FK References]]></title>
    <query>
        <sql>
            <![CDATA[select a.owner,
                            a.table_name,
                            a.constraint_name,
                            a.status
                     from   all_constraints a
                     where  a.constraint_type = 'R'
                            and exists(
                               select 1
                               from   all_constraints
                               where  constraint_name=a.r_constraint_name
                                      and constraint_type in ('P', 'U')
                                      and table_name = :OBJECT_NAME
                                      and owner = :OBJECT_OWNER)
                               order by table_name, constraint_name]]>
        </sql>
    </query>
    </item>
</items>

将扩展添加到SQL Developer: 工具>首选项 数据库>用户定义扩展 点击“添加行”按钮 在类型中选择“编辑器”，位置是你上面保存xml文件的位置 单击“确定”，然后重新启动SQL Developer 导航到任何表，您现在应该在SQL表旁边看到一个附加选项卡，标记为FK References，其中显示新的FK信息。 参考 http://www.oracle.com/technetwork/issue-archive/2007/07-jul/o47sql-086233.html

SELECT DISTINCT table_name, 
                constraint_name, 
                column_name, 
                r_table_name, 
                position, 
                constraint_type 
FROM   (SELECT uc.table_name, 
               uc.constraint_name, 
               cols.column_name, 
               (SELECT table_name 
                FROM   user_constraints 
                WHERE  constraint_name = uc.r_constraint_name) r_table_name, 
               (SELECT column_name 
                FROM   user_cons_columns 
                WHERE  constraint_name = uc.r_constraint_name 
                       AND position = cols.position)           r_column_name, 
               cols.position, 
               uc.constraint_type 
        FROM   user_constraints uc 
               inner join user_cons_columns cols 
                       ON uc.constraint_name = cols.constraint_name 
        WHERE  constraint_type != 'C') 
START WITH table_name = '&&tableName' 
           AND column_name = '&&columnName' 
CONNECT BY NOCYCLE PRIOR table_name = r_table_name 
                         AND PRIOR column_name = r_column_name; 

2015年5月发布的SQL Developer 4.1增加了一个Model选项卡，显示表外键，表外键以实体关系图的格式引用你的表。

为sql developer插件添加上面的答案，使用下面的xml将有助于获得与外键相关的列。

    <items>
        <item type="editor" node="TableNode" vertical="true">
        <title><![CDATA[FK References]]></title>
        <query>
            <sql>
                <![CDATA[select a.owner,
                                a.constraint_name,
                                a.table_name,
                                b.column_name,
                                a.status
                         from   all_constraints a
                         join   all_cons_columns b ON b.constraint_name = a.constraint_name
                         where  a.constraint_type = 'R'
                                and exists(
                                   select 1
                                   from   all_constraints
                                   where  constraint_name=a.r_constraint_name
                                          and constraint_type in ('P', 'U')
                                          and table_name = :OBJECT_NAME
                                          and owner = :OBJECT_OWNER)
                                   order by table_name, constraint_name]]>
            </sql>
        </query>
        </item>
    </items>

这已经在产品中存在多年了——尽管在2011年的产品中还没有。

但是，只需单击Model页面。

请确保您使用的版本至少为4.0(2013年发布)才能访问此功能。

我喜欢使用直接的SQL查询来实现这一点，而不是在SQL Developer应用程序中瞎折腾。

我是这么做的。最好通读这篇文章，了解发生了什么，这样你就可以调整它来满足你的需求……

WITH all_primary_keys AS (
  SELECT constraint_name AS pk_name,
         table_name
    FROM all_constraints
   WHERE owner = USER
     AND constraint_type = 'P'
)
  SELECT ac.table_name || ' table has a foreign key called ' || upper(ac.constraint_name)
         || ' which references the primary key ' || upper(ac.r_constraint_name) || ' on table ' || apk.table_name AS foreign_keys
    FROM all_constraints ac
         LEFT JOIN all_primary_keys apk
                ON ac.r_constraint_name = apk.pk_name
   WHERE ac.owner = USER
     AND ac.constraint_type = 'R'
     AND ac.table_name = nvl(upper(:table_name), ac.table_name)
ORDER BY ac.table_name, ac.constraint_name
;

仅用主表名替换table_name

select *
from all_constraints
where r_constraint_name in (
select constraint_name
from all_constraints
where table_name='table_name'
); 

替换下面的MY_OWNER_NAME和MY_TABLE_NAME，你就可以递归了:

DECLARE
FUNCTION list_all_child_tables_and_constraints(asked_table_name in VARCHAR2, parent_table_name in VARCHAR2)
RETURN VARCHAR2 IS
    current_path VARCHAR2(100);
BEGIN
    FOR item IN
    (SELECT fk.TABLE_NAME, constraint_parent.FK FK1, constraint_child.FK FK2
        FROM all_constraints fk, all_constraints pk,
            (SELECT acc.CONSTRAINT_NAME, LISTAGG(acc.COLUMN_NAME, ', ') WITHIN GROUP (ORDER BY acc.COLUMN_NAME) AS FK
                FROM ALL_CONS_COLUMNS acc
                WHERE acc.OWNER = 'MY_OWNER_NAME'
                GROUP BY acc.CONSTRAINT_NAME) constraint_parent,
            (SELECT acc.CONSTRAINT_NAME, LISTAGG(acc.COLUMN_NAME, ', ') WITHIN GROUP (ORDER BY acc.COLUMN_NAME) AS FK
                FROM ALL_CONS_COLUMNS acc
                WHERE acc.OWNER = 'MY_OWNER_NAME'
                GROUP BY acc.CONSTRAINT_NAME) constraint_child
        WHERE pk.owner = fk.r_owner
            AND pk.constraint_name = fk.r_constraint_name
            AND fk.constraint_type = 'R'
            AND pk.table_name = asked_table_name
            AND constraint_parent.CONSTRAINT_NAME = fk.CONSTRAINT_NAME
            AND constraint_child.CONSTRAINT_NAME = fk.R_CONSTRAINT_NAME
            AND pk.owner = 'MY_OWNER_NAME'
            AND fk.owner = 'MY_OWNER_NAME')
    LOOP
        current_path := parent_table_name || ' // ' || item.TABLE_NAME;
        DBMS_OUTPUT.PUT_LINE(current_path);
        DBMS_OUTPUT.PUT_LINE('     [' || item.FK1 || ']  [' || item.FK2 || ']');
        DBMS_OUTPUT.PUT_LINE('');
        current_path := list_all_child_tables_and_constraints(item.TABLE_NAME, current_path);

    END LOOP;
    RETURN '-----------FINISHED-----------';

EXCEPTION
    WHEN OTHERS THEN
        RETURN '-----------FINISHED-----------';
END list_all_child_tables_and_constraints;
BEGIN
DBMS_OUTPUT.PUT_LINE(list_all_child_tables_and_constraints('MY_TABLE_NAME', ''));
END;