MySQL: 获取约束名称并将其放在一条语句中

Question

我正在从以下位置获取约束名称：

SELECT
  constraint_name
FROM
  information_schema.REFERENTIAL_CONSTRAINTS
WHERE
  constraint_schema = 'db' AND table_name = 'table';

然后将其从 table 中删除。它在本地机器上手动完成时有效。现在它正在扰乱我的 Jenkins 构建的数据库迁移脚本。
有没有办法在一条语句中做到这一点？

Update
Following query gave me Access denied for user root@localhost

DELETE
FROM
  information_schema.REFERENTIAL_CONSTRAINTS
WHERE
  constraint_schema = 'db' AND table_name = 'table';

Answer 1

自动生成下降约束为运行:

SELECT concat('ALTER TABLE ', TABLE_NAME, ' DROP FOREIGN KEY ', CONSTRAINT_NAME, ';') as theString
FROM information_schema.key_column_usage 
WHERE CONSTRAINT_SCHEMA = 'so_gibberish' 
AND referenced_table_name IS NOT NULL;

+---------------------------------------------------+
| theString                                         |
+---------------------------------------------------+
| ALTER TABLE fc_junction DROP FOREIGN KEY fc_cat;  |
| ALTER TABLE fc_junction DROP FOREIGN KEY fc_food; |
+---------------------------------------------------+

它会自动生成运行的字符串。如有必要，按摩订单。然后你走吧。请注意，在 Workbench/sqlyog 中，您当然不会有 table 栏输出。

MySQL: 获取约束名称并将其放在一条语句中

MySQL: Get constraint name and drop it in one statement

mysql

sql

ddl

dynamic

bulk

自动生成下降约束为运行:

MySQL: 获取约束名称并将其放在一条语句中

MySQL: Get constraint name and drop it in one statement

mysql

sql

ddl

dynamic

bulk

自动生成下降约束为 运行:

自动生成下降约束为运行: