一、背景: 本来已经正常运行的平台,突然有一天由于对服务器进行部分操作迁移,发现jar可以正常启动,但是访问功能一直报错,监控后台日志后,发现了问题: 报错的具体信息如下: Caused by: java.sql.SQLSyntaxErrorException: Expression #1 of SELECT list is not in GROUP BY clause and conta
前面有个webSocket自动断开连接的问题,已解决,请见博客: webSocket java.io.EOFException: null 增加心跳机制解决 然后又报了一个错: java.lang.IllegalStateException: The remote endpoint was in state [TEXT_FULL_WRITING] which is an invalid st
目录 1. 缘由2. 解决 1. 缘由 当 MySQL 的版本为 5.7+ 时,在执行 group by 时,如果 select 的字段不在 group by 中, 并且 select 的字段未使用聚合函数(SUM、AVG、MAX、MIN 等)的话,就会报错。 mysql> SELECT name, address, MAX(age) FROM t GROUP BY name;
错误内容 SQL 错误 [1055] [42000]: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'xx.xx.id' which is not functionally dependent on columns in GROUP BY clause; this
错误场景 有时候,遇到数据库重复数据,需要将数据进行分组,并取出其中一条来展示,这时就需要用到group by语句。 但是,如果mysql是高版本,当执行group by时,select的字段不属于group by的字段的话,sql语句就会报错。报错信息如下: Expression #1 of SELECT list is not in GROUP BY clause and contain
FMC213V3-基于FMC兼容1.8V IO的Full Camera Link 输入子卡 一、板卡概述 该板卡为了考虑兼容1.8V电平IO,适配Virtex7,Kintex Ultrascale,Virtex ultrasacle + FPGA而特制,如果要兼容原来的3.3V 也可以修改硬件参数。板卡支持1路Full Camera link输入,同时支持1路H
Watermelon Full of Water 时间限制(普通/Java):3000MS/9000MS 运行内存限制:65536KByte 描述 Watermelon is very popular in the hot summer. Students in ZJU-ICPC Team also love watermelon very much and they
如果你的项目出现如下类似的错误 ### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column '字段名' which is not funct