在 Oracle SQL Developer 中,如果我正在查看表上的信息,我可以查看约束,这让我可以看到外键(以及该表引用了哪些表),我可以查看依赖关系以查看哪些包和引用了表.但我不确定如何找到哪些表引用了该表.
In Oracle SQL Developer, if I'm viewing the information on a table, I can view the constraints, which let me see the foreign keys (and thus which tables are referenced by this table), and I can view the dependencies to see what packages and such reference the table. But I'm not sure how to find which tables reference the table.
例如,假设我正在查看 emp
表.还有一个表emp_dept
,它捕获了哪些员工在哪个部门工作,通过emp_id
引用emp
表,emp_id
,的主键>emp
表.有没有办法(通过程序中的某些 UI 元素,而不是通过 SQL)找到 emp_dept
表引用 emp
表,而我不必知道 emp_dept
表是否存在?
For example, say I'm looking at the emp
table. There is another table emp_dept
which captures which employees work in which departments, which references the emp
table through emp_id
, the primary key of the emp
table. Is there a way (through some UI element in the program, not through SQL) to find that the emp_dept
table references the emp
table, without me having to know that the emp_dept
table exists?
没有.Oracle SQL Developer 没有提供这样的选项.
No. There is no such option available from Oracle SQL Developer.
您必须手动执行查询或使用其他工具(例如 PLSQL Developer这样的选择).以下 SQL 是 PLSQL Developer 使用的 SQL:
You have to execute a query by hand or use other tool (For instance PLSQL Developer has such option). The following SQL is that one used by PLSQL Developer:
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
是架构,r_table_name
是您要查找的表.名称区分大小写
Where r_owner
is the schema, and r_table_name
is the table for which you are looking for references. The names are case sensitive
请注意,因为在 Oracle SQL Developer 的报告选项卡上有选项所有表/依赖项",它来自 ALL_DEPENDENCIES 指的是当前用户可访问的过程、包、函数、包主体和触发器之间的依赖关系,包括对创建的视图没有任何数据库链接.".那么,这份报告对您的问题没有任何价值.
Be careful because on the reports tab of Oracle SQL Developer there is the option "All tables / Dependencies" this is from ALL_DEPENDENCIES which refers to "dependencies between procedures, packages, functions, package bodies, and triggers accessible to the current user, including dependencies on views created without any database links.". Then, this report have no value for your question.
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