"This is incompative with sql_mode = only_full_group_by" Quick solution method

1. Reasons for the problem

MySQL 5.7, realize the dependencies of detection functions. If it is enabledONLY_FULL_GROUP_BY SQL mode (default),MySQLRefuse to choose a list query, conditions, or command list refers to the non -aggregate column is neitherGROUP BYThe specified function in the clause does not rely on them. (Before 5.7,MySQLDependence and dependencies of not detecting functionsONLY_FULL_GROUP_BYDo not open in the default situation.ONLY_FULL_GROUP_BY,forGROUP BYPlastful operation, if inSELECTThe column in the middleGROUP BYIt appears, then thisSQLIt's illegal, because the list is not thereGROUP BYFrom the sentence, that is, the found column must be inGROUP BYOtherwise, an error will be reported later, or this field appears in the polymerization function.

2. Solution

useselect @@GLOBAL.sql_mode,CheckONLY_FULL_GROUP_BYWhether to enable, as follows

select @@global.sql_mode;

Get the query data and remove the insideONLY_FULL_GROUP_BY Mode, thenset go back

set @@global.sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

If it still does not take effect, it runs:

set sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

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