下载安装的是最新版的mysql5.7.x版本,默认是开启了 only_full_group_by 模式的,但开启这个模式后,原先的 group by 语句就报错,然后又把它移除了. 一旦开启 only_full_group_by ,感觉,group by 将变成和 distinct 一样,只能获取受到其影响的字段信息,无法和其他未受其影响的字段共存,这样,group by 的功能将变得十分狭窄了 only_full_group_by 模式开启比较好. 因为在 mysql 中有一个函数: any_…

数据库升级到5.7.21后,一个正常的分组后按日期排序,并返回数据的语句开始报错: 语句如下: SELECT id,title,add_time FROM `message` GROUP BY add_time ORDER BY add_time DESC; 异常如下: 错误代码: 1055 Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'miniodb.nhb_m…

MySQL5.7后将sql_mode的ONLY_FULL_GROUP_BY模式默认设置为打开状态,这样一来,很多之前的sql语句可能会出现错误,错误信息如下: Error Code: 1055. Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column '×××' which is not functionally dependent on columns in GROUP B…

用到GROUP BY 语句查询时com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'col_user_6.a.START_TIME' which is not functionally dependent on columns in GROUP BY c…

用到GROUP BY 语句查询时com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'col_user_6.a.START_TIME' which is not functionally dependent on columns in GROUP BY c…

1:报错  关键字 sql_mode=only_full_group_bymysql> select uuid,ip,count(*) from dbname_report.t_client_ips group by uuid limit 1;ERROR 1055 (42000): Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'dbname_report.t_cl…

今天在测试服务器上突然出现了这么一个MySQL的问题,同样的代码正式服没有问题,那肯定就是出在了配置上,查了一下原因才明白原来是数据库版本为5.7以上的版本, 默认是开启了 only_full_group_by 模式的,但开启这个模式后,原先的 group by 语句就报错, 查询MySQL版本可以在命令行模式刚连接上数据库时就能看到,或者在进入mysql后使用命令:status查看版本号, 既然是版本的问题,那就查询一下配置看看具体的情况,命令行连接上数据库,再输入命令: select @@s…

/** * @author lcc807@ikoo8.com * * 临时关闭Mysql ONLY_FULL_GROUP_BY */ function closeSqlFullMode(){ DB::select("set session sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'&…

  用到GROUP BY 语句查询时com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'col_user_6.a.START_TIME' which is not functionally dependent on columns in GROUP BY…

Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'information_schema.PROFILING.SEQ' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by 第…