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...
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 ...
Missing index for constraint 'fk_emp1_dept_id' in the referenced table 'dept1' -- 错误:因为创建外键约束时,参考的主表的字段必须是唯一的(具有唯一性约束或者为主键) #修改主表dept1关联字段为唯一 alter table dept1 add primary key (dept_id); desc dept1; #再次执行建立从表操作,成功! desc em...
Access denied for user 'root'@ '...' (using password: YES) - CSDN MySQL登录时出现 Access denied for user ‘root‘@‘xxx.xxx.xxx.xxx‘ (using password: YES) 的原因及解决办法 - CSDN Web项目数据库MySQL出现Access denied for user (using password: YES)报错的解决办法 - CSDN Navicat连接数据...
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...
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...
# 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...
_constraint_impl, dd::Column, dd::Column_impl, dd::Column_statistics, dd::Column_statistics_impl, dd::Column_type_element, dd::Column_type_element_impl, dd::Entity_object_impl, dd::Foreign_key, dd::Foreign_key_element, dd::Foreign_key_element_impl, dd::Foreign_key_impl, dd::Index...
t1 - MyISAM engine does not support native partitioning6) Foreign key constraint names longer than 64 characters No issues found7) Usage of obsolete MAXDB sql_mode flag No issues found8) Usage of obsolete sql_mode flags No issues found9) ENUM/SET column definitions containing elements ...
• Error number: 1214; Symbol: ER_TABLE_CANT_HANDLE_FT; SQLSTATE: HY000 18 Message: The used table type doesn't support FULLTEXT indexes • Error number: 1215; Symbol: ER_CANNOT_ADD_FOREIGN; SQLSTATE: HY000 Message: Cannot add foreign key constraint • Error number: 1216; Symbol: ...