一、场景
1、项目使用ShardingJDBC操作数据库
2、修改SQL执行报错
二、报错信息
### Error updating database. Cause: com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Out of range value for column 'MSGID' at row 1
### The error may involve com.xxx.mapper.service.KeyWordMapper.updateByExample-Inline
### The error occurred while setting parameters
### SQL: UPDATE t_wx_keyword SET keyword = ?,msgType = ?,msgId = ?,content = ?,createTime = ?,eable = ?,matchType = ?,originId = ?,vdnId = ? WHERE ( ( vdnId = ? and originId = ? and id = ? ) )
### Cause: com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Out of range value for column 'MSGID' at row 1
; Data truncation: Out of range value for column 'MSGID' at row 1; nested exception is com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Out of range value for column 'MSGID' at row 1
org.springframework.dao.DataIntegrityViolationException:
### Error updating database. Cause: com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Out of range value for column 'MSGID' at row 1
### The error may involve com.xxx.mapper.service.KeyWordMapper.updateByExample-Inline
### The error occurred while setting parameters
### SQL: UPDATE t_wx_keyword SET keyword = ?,msgType = ?,msgId = ?,content = ?,createTime = ?,eable = ?,matchType = ?,originId = ?,vdnId = ? WHERE ( ( vdnId = ? and originId = ? and id = ? ) )
### Cause: com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Out of range value for column 'MSGID' at row 1
; Data truncation: Out of range value for column 'MSGID' at row 1; nested exception is com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Out of range value for column 'MSGID' at row 1
三、原因
表字段的数据类型与实体类属性的类型不一致
在本例中：表字段MSGID的数据类型是int，而实体类的msgId属性类型是String，类型不一致
四、解决
方法1、更改表字段数据类型，与实体类属性类型一致
方法2、更改实体类属性类型，与表字段数据类型一致