今天在java mybatis项目中遇到一个问题,“java mybatis Column 'AAA' in where clause is ambiguous”, 这是由于在多表连接查询的时候,遇上有相同的字段,这个需要设置一下表名的前缀: 例: select * from lw_table lt where lt.column =  'xxxx' 在相关的地方加上lt前缀就可以了.这个错误也提醒开发写条件语句的时候最好是附上表明的前缀.…

当在java开发中遇到了Column 'AAA' in where clause is ambiguous问题时, 你需要去看看:多表查询的时候不同的表是否出现了相同名称相同的列, 如果存在,你需要在条件中或者查询结果中指定表名, 比如:user表有name,post表有name,而你想查询name,那么你就需要写表名:select post.name from post inner join user on user.id=post.user.id;…

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'org_mer_id' in where clause is ambiguous ### The error may exist in class path resource [mapper/StatisticsPeriodTaskMapper.xml] ##…

内容 一.异常信息 严重: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: ### Error querying database. Cause: com.m…

1.错误描述 org.hibernate.exception.ConstraintViolationException: error executing work at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:72) at org.hibernate.exception.internal.StandardSQLExceptionConverter…

问题: AND created_by IN (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?) limit 0, 10]; Column 'created_by' in where clause is ambiguous; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'created_by' in where clause…

1.先看错误的sql语句: select a.authName from roles as r,authority as a,role_ah as ra where ra.roleId=r.roleId and ra.ahId=a.ahId and roleId='R002' 2.再看正确的sql语句: select a.authName from roles as r,authority as a,role_ah as ra where ra.roleId=r.roleId and ra.ah…

今天报了这个错误 原因是.当使用sql查询语句,使用了join查表.但是这个orders没指定是哪张表的字段 ,发生在自关联情况…

[Err] 1052 - Column 'modify_time' in where clause is ambiguous 出错的语句: SELECT AVG(T.se)%60FROM( SELECT TIMESTAMPDIFF(SECOND,first_transfer_time,modify_time) se FROM xes_appeals INNER JOIN xes_appeal_templates WHERE xes_appeals.app_type = xes_appeal_te…

今天在使用mysql数据库查找数据的时候报错,错误信息如下: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'dd' in 'where clause' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newI…