[Err] 1055 - Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated colum
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场景
[SQL] select * from `crmre` group by `repeat_type_id`;
[Err] 1055 - Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column ‘crmre.id’ which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
解决方案
一、查询mysql 相关mode
show variables like '%sql_mode%'
二、show variables like '%sql_mode%'
命令查询,发现里面有 ONLY_FULL_GROUP_BY
, 将其删除掉。
三、在把:sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
复制到
四、重启MySQL
service mysqld stop
停止mysql服务命令
service mysqld start
启动mysql服务命令
MySQL 的 sql_mode 模式
MySQL数据库的中有一个环境变量sql_mode
,定义了MySQL应该支持的sql语法,数据校验等!
我们可以通过以下方式查看当前数据库使用的sql_mode
:
一,sql_mode 值的含义
ONLY_FULL_GROUP_BY | 对于GROUP BY聚合操作,如果在SELECT中的列,没有在GROUP BY中出现,那么将认为这个SQL是不合法的,因为列不在GROUP BY从句中 |
STRICT_TRANS_TABLES | 在该模式下,如果一个值不能插入到一个事务表中,则中断当前的操作,对非事务表不做任何限制 |
NO_ZERO_IN_DATE | 在严格模式,不接受月或日部分为0的日期。如果使用IGNORE选项,我们为类似的日期插入'0000-00-00'。在非严格模式,可以接受该日期,但会生成警告。 |
NO_ZERO_DATE | 在严格模式,不要将 '0000-00-00'做为合法日期。你仍然可以用IGNORE选项插入零日期。在非严格模式,可以接受该日期,但会生成警告 |
ERROR_FOR_DIVISION_BY_ZERO | 在严格模式,在INSERT或UPDATE过程中,如果被零除(或MOD(X,0)),则产生错误(否则为警告)。如果未给出该模式,被零除时MySQL返回NULL。如果用到INSERT IGNORE或UPDATE IGNORE中,MySQL生成被零除警告,但操作结果为NULL。 |
NO_AUTO_CREATE_USER | 防止GRANT自动创建新用户,除非还指定了密码。 |
NO_ENGINE_SUBSTITUTION | 如果需要的存储引擎被禁用或未编译,那么抛出错误。不设置此值时,用默认的存储引擎替代,并抛出一个异常。 |
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