mysql ERROR: Error 1005: Can't create table (errno: 121)

时间:2022-05-19 20:43:23
Q:Executing SQL script in server
ERROR: Error 1005: Can't create table 'aquaticstar.link' (errno: 121)


A:I searched quickly for you, and it brought me here. I quote:


You will get this message if you're trying to add a constraint with a name that's already used somewhere else
To check constraints use the following SQL query:


SELECT
    constraint_name,
    table_name
FROM
    information_schema.table_constraints
WHERE
    constraint_type = 'FOREIGN KEY'
AND table_schema = DATABASE()
ORDER BY
    constraint_name;
Look for more information there, or try to see where the error occurs. Looks like a problem with a foreign key to me.


Q:ERROR: Error 1005: ...... (errno: 150)


A:查看mysql主表的键字段与从表的字段的值类型是否一样,比如varchar(10),int