How to modify the default value of a column in mysql

How to modify the default value of a column in MySQL: directly execute the [alter table table name alter column field name set default default value;] statement to modify the default value.

If there is a default value, delete it first

(recommended tutorial:mysql video tutorial)

alter table表名alter column字段名drop default;

Then set the default value (if it does not exist, you can set it directly)

alter table表名 alter column字段名 set default默认值;

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