mysql 查询和删除外键约束
时间:2022-04-07 15:02:53.613 +0800 CST 浏览:155

查询外键约束

select
  TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME
  from INFORMATION_SCHEMA.KEY_COLUMN_USAGE
  where CONSTRAINT_SCHEMA ='blog' AND
  REFERENCED_TABLE_NAME = 'articles';

+------------+-------------+----------------------+-----------------------+------------------------+
| TABLE_NAME | COLUMN_NAME | CONSTRAINT_NAME      | REFERENCED_TABLE_NAME | REFERENCED_COLUMN_NAME |
+------------+-------------+----------------------+-----------------------+------------------------+
| categories | uuid        | fk_articles_category | articles              | category_uuid          |
+------------+-------------+----------------------+-----------------------+------------------------+

删除外键约束

alter tablecategories drop foreign key fk_articles_category;


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