sql语句为：
select t1.day as day , any_value(IFNULL(t2.avgNum,0)) as avgNum, any_value(IFNULL(t2.maxNum,0)) as maxNum
from ( SELECT date_add( date_sub('2021-03-01',interval 1 day), INTERVAL ( cast( help_topic_id AS signed ) + 1 ) day ) day
FROM mysql.help_topic
WHERE help_topic_id <= DATEDIFF('2021-03-03',date_sub('2021-03-01',interval 1 day))) t1
left JOIN
(select ctime, any_value(sum(hourNum)) as avgNum, any_value(MAX(hourNum)) as maxNum from ( select any_value(DATE_FORMAT(create_time,'%Y-%m-%d')) as ctime, any_value(DATE_FORMAT(create_time,'%Y-%m-%d-%H')) as chour, count(*) as hourNum
from game_log.player_login_log
where server_id = 196 and DATE_FORMAT(create_time,'%Y-%m-%d') >= '2021-03-03'
and DATE_FORMAT(create_time,'%Y-%m-%d') <= '2021-03-03' group by chour) t group by ctime ) t2
ON t1.day = t2.ctime ORDER BY t1.day
message:
### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'game_log.player_login_log.create_time' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
### The error may exist in com/manage/dao/mapper/IReportMapper.java (best guess)
### The error may involve com.manage.dao.mapper.IReportMapper.game2-Inline
### The error occurred while setting parameters
### SQL: select t1.day, IFNULL(t2.avgNum,0) avgNum, IFNULL(t2.maxNum,0) maxNum from ( SELECT date_add( date_sub(?,interval 1 day), INTERVAL ( cast( help_topic_id AS signed ) + 1 ) day ) day FROM mysql.help_topic WHERE help_topic_id < DATEDIFF(?,date_sub(?,interval 1 day)) ) t1 LEFT JOIN ( select ctime, ROUND(sum(hourNum)/24) as avgNum, MAX(hourNum) as maxNum from ( select DATE_FORMAT(create_time,'%Y-%m-%d') ctime, DATE_FORMAT(create_time,'%Y-%m-%d-%H') chour, count(*) hourNum from game_log.player_login_log where server_id = ? and DATE_FORMAT(create_time,'%Y-%m-%d') >= ? and DATE_FORMAT(create_time,'%Y-%m-%d') <= ? group by chour ) t group by ctime ) t2 ON t1.day = t2.ctime ORDER BY t1.day
### Cause: java.sql.SQLSyntaxErrorException: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'game_log.player_login_log.create_time' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'game_log.player_login_log.create_time' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
网上查出报错原因：
数据库设置了只读事务（保证了事务级别的读一致性），查询是一个事务的开始，但是在查询中有修改操作。
解决：
将运算部分查出，在代码里运算；