"This is incompative with sql_mode = only_full_group_by" error solution (MAC system)
1. Principle level
This error occurred in the MYSQL 5.7 version and above.
The default SQL configuration of MySQL 5.7 is: sql_mode = "only_full_group_by", which strictly executes the "SQL92 standard".
When it is upgraded from 5.6 to 5.7, most of them will choose to adjust the SQL_mode for grammar compatibility, so that it is consistent with 5.6, in order to be as compatible as possible.
2. SQL level
When SQL is executed, this reason occurs:
Simply put: the result of the output is target list, which is the field followed by select, and there is a place in a place by column, which is the place
The field followed by group by. Because the settings of only_full_group_by, if a field is not on the target list
If it appears at the same time as the GROUP BY field, or the value of the polymerization function, then this SQL query is considered illegal by mysql and reports errors.
1. View the sentence of SQL_MODE as follows
select @@GLOBAL.sql_mode;
Solution- (Recommended solution 2)
① Solution 1: SQL statement temporarily modify sql_mode
| 1 |
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(Note: After setting, you may need to restart the MySQL service, and then set it again, because it will fail after the restart)
After restarting the MySQL database service, only_full_group_by will still appear.
② Solution 2: Perfect solution.
Add this sentence to the My.CNF file:
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
Just restart mysql.
Notice:
If you have not used my.cnf, you must manually create a My.CNF directory under the few directory we saw in the previous one. Usually /usr/local/Mysql/support-files/my-default.cnf directory There will be a default file below. If you copy it to the specified location for custom modification, it is OK.
But sometimes/usr/local/mysql/support-filesWithout the files we want, it can only be added by itself.
Download my.cnf address:MySQL and MariaDB Configuration File template (my.cnf/my.ini) | FromDual
grateful:
"This is incompative with sql_mode = only_full_group_by" error solution - -Blog Garden
MySQL and MariaDB Configuration File template (my.cnf/my.ini) | FromDual
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