how to add default constraint in mysql code example
Example 1: how to add default constraint in mysql
ALTER TABLE "name_table" ALTER "name_column"
SET DEFAULT value_default;
Example 2: default number in sql
//Sql Server
//Add a table
ALTER TABLE clients ADD Points INT DEFAULT 0
//Edit an existing table
ALTER TABLE clients ADD CONSTRAINT points DEFAULT 0 FOR Points
Example 3: set default column value sql
Name Varchar(255) default "Fred"