1, the use of group by group statement in mysql 5.7 or later, if you select the field, not exactly correspond to the group by the back of the field, there are other fields, it will report this error
ERROR 1055 (42000): Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column
View sql_mode
select @@sql_mode;
mysql> select @@sql_mode;
You can see there is a ONLY_FULL_GROUP_BY, this is the strict control group by and select fields, without changing the sql statement premise, this can be removed
set @@ global.sql_mode = 'other values';
2、Mysql ERROR 1067: Invalid default value for ‘date’ 解决
If you specified when you create table engine entry is not supported at this time will support mysql error
Sql_mode modify the value, if not add NO_ENGINE_SUBSTITUTION
set @@ global.sql_mode = 'original value, NO_ENGINE_SUBSTITUTION';
3, given data insertion Incorrect integer value: '' for column
mysql version to more than 5 will encounter this problem, insert null characters to use NULL
Default sql-mode = "STRICT_TRANS_TABLES, NO_AUTO_CREATE_USER , NO_ENGINE_SUBSTITUTION",
after it is modified to sql-mode = "NO_AUTO_CREATE_USER, NO_ENGINE_SUBSTITUTION ", to restart mysql
Other values Description of sql_mode: https: //blog.csdn.net/wyzxg/article/details/8787878