报错:Error Code: 1822. Failed to add the foreign key constraint. Missing index for constraint 'FAS_CABINET_FK01' in the referenced table 'COMMON_PERSONS' 其中GUID在`storage`.`COMMON_PERSONS`中并非primary key,也不是unique key 解决:可以看到因为GUID不是index导致,所以需要换成指向primary key或者把...
mysql> 1. 2. 3. 可以发现这里是报错了的,所以在使用MySQL8.0版本创建用户时应该使用常见的 create 语句,创建后再赋值。 问题二、ERROR 1822 (HY000) 问题完整描述: ERROR 1822 (HY000): Failed to add the foreign key constraint. Missing index for constraint ‘xxxx’ in the referenced table ‘xxxxx’ ...
Re: Error Code: 1822. Failed to add the foreign key constraint. Missing index for constraint 'department_ibfk_1' in the referenced table 'employee' Peter Brawley November 12, 2019 11:51AM Sorry, you can't reply to this topic. It has been closed. ...
004000s # 添加或者删除外键针对的都是从表 # 外键约束的删除 alter table employee drop foreign key emp_dept_fk; # 再次添加外键 alter table employee add constraint emp_dept_fk foreign key(dept_id) references department(id); # 有主外键关系的两个表插入数据的时候,首先要插入主表,然后再插入从表...
外键主要用来保证数据的完整性和一致性 两个表必须是InnoDB表，MyISAM表暂时不支持外键 外键列必须建立...
# 表级约束constraintpk_test4_idprimarykey(id) # 注意:没有必要命名,就算命名了还是primarykey 因为主键唯一 );desctest4; 添加数据 insertintotest4(id,last_name,salary,email)values(1,'Tom',4500,'tom@qq.com');-- > 1062 - Duplicate entry '1' for key 'test4.PRIMARY' 错误,主键是惟一的inse...
ENGINE=InnoDB; CREATE UNIQUE INDEX a_idx ON tbl1(a); CREATE INDEX b_idx ON tbl1(b); CREATE TABLE tbl2(aa INT NOT NULL, bb INT NOT NULL, CONSTRAINT fk FOREIGN KEY(aa, bb) REFERENCES tbl1(a, b)) ENGINE=InnoDB; -- SQL Error (1215): Cannot add foreign key constraint -- Correct...
Null is a special constraint of columns. The columns in table will be added null constrain if you do not define the column with “not null” key words explicitly when creating the table.Many programmers like to define columns by default because of the conveniences(reducing the judgement code ...
#define ER_ACCESS_DENIED_ERROR 1045 "Access denied for user:'%-.32s'@'%-.64s'(Using password: %s)", #define ER_NO_DB_ERROR 1046 "No Database Selected", #define ER_UNKNOWN_COM_ERROR 1047 "Unknown command", #define ER_BAD_NULL_ERROR 1048 "Column '%-.64s' cannot be null", ...
ON UPDATE CASCADE; ERROR 1822 (HY000): Failed to add foreign key constraint. Missing index for constraint 'hizogol_ibfk_3' in the referenced table 'partido' Subject Written By Posted ERROR 1822 (HY000): Failed to add foreign key constraint. Missing index for constraint ...