Error Code: 3780. Referencing column 'xxx' and referenced column 'xxx' in foreign key constraint 'zzz' are incompatible com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure 参考 小结 最近在使用MySQL8.0.37过程中返回的两个错误(Error Code: 3780和Communications link failure),...
参考:https://stackoverflow.com/questions/58550408/error-when-foreign-referencing-in-mysql-error-3780 这是由于两个表的table collation不同导致的. 修改表collation: ALTER TABLE `basename`.`tablename` COLLATE=utf8_bin; 发现仍然不行,这是由于 1.修改数据库的collation,对修改后新建的表才会生效,已存在表...
MySQL创建外键报错ERROR 3780 (HY000): Referencing column ‘user_id’ and referenced column ‘id’ in foreign key constraint ‘fk_user_id’ are incompatible. 原因:两个数据表中创建外键的数据类型不一致 我的错误是一个表是int,一个是bigint,这种的也算做是不一致的 解决办法:将数据类型修改为一致的即...
(Cid) ) Error Code: 3780. Referencing column 'City' and referenced column 'Cid' in foreign key constraint 'employee_ibfk_1' are incompatible. 0.031 secHow to repeat:09:37:50 CREATE TABLE Employee( EmpId INT NOT NULL AUTO_INCREMENT, EmpName VARCHAR(40) NOT NULL, Designation VARCHAR(40) ...
SQL Error code: 1045 Use --verbose for detailed stacktrace. *** schemaTool failed *** 按照百度教程,进mysql 修改了数据库的权限,不好使 最后用native for mysql挨个修改用户的密码,为了不出错,密码和root用户的密码保持一致,再次初始化 成功。
MySQL[tpa]>desc table1;+---+---+---+---+---+---+|Field|Type|Null|Key|Default|Extra|+---+---+---+---+---+---+|siteid|INT|Yes|true|10|||citycode|SMALLINT|Yes|true|NULL|||username|VARCHAR(32)|Yes|true|||pv|BIGINT|Yes|false|0|SUM|+---+---+---+---+---+...
jar;D:\jdk\jre\lib\rt.jar;E:\javaStudy\code\spring\mybatis_multi\target\test-classes;E:\javaStudy\code\spring\mybatis_multi\target\classes;D:\idea\IntelliJ IDEA 2020.2.3\plugins\maven\lib\maven3\mysql\mysql-connector-java\8.0.22\mysql-connector-java-8.0.22.jar;D:\idea\IntelliJ IDEA ...
It looks like mysql pool connection is throwing errors and somehow creates the crash. Maybe callback arrives so late that ws is closed. Not sure how to create a small test for this as it has a lot of pieces. ws.open is using ws, ws.message uses db&ws to fetch and return data and...
mysql "^2.13.0" pify "^2.3.0" amdefine@>=0.0.4: version "1.0.1" resolved "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5" ansi-colors@^3.2.1: version "3.2.4"
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