Question

I have a database, with some tables in which, some fields have constraints. I have named some of these constraints myself, but some others, the names are generated automatically.

I want to select all these constrains. I am using

SELECT * FROM sys.objects
WHERE type_desc LIKE '%CONSTRAINT'

to get all the constraints. However there are a lot, and I cannot find them manually. These names are unpredictable with alphanumeric characters like PK__getParen__50EEF97F6BC33CCA How do I separate constraints I have named myself and automatically named?

Answer 1

sys.check_constraints，sys.key_constraints，sys.default_constraints，sys.foreign_keys视图包含一列is_system_named，可以告诉您是否自动生成了约束的名称。

Answer 2

在对象资源管理器的“数据库”文件夹的“系统数据库”文件夹的“主”数据库文件夹的“视图”文件夹中的“系统视图”文件夹中有许多与CONSTRAINT相关的视图。

即：除非已经打开，否则请从Object Explorer标签打开View。

Databases > System Databases > master > Views > System Views。

只需将它们作为（例如）SELECT * FROM INFORMATION_SCHEMA.CHECK_CONSTRAINTS运行，您就应该找到所需的内容。

Answer 3

尝试类似：

 SELECT * 
    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
    WHERE CONSTRAINT_NAME NOT LIKE 'PK_%'

How to select all automatically named constrains in tables, sql server

3 个答案: