sql operation table structure

The following table, for example with student

- View table structure

desc student;

- add a field
alter table student add (field names) Age (data type) int unsigned (constraint) Not null default 0;
ALTER the Add Table Student Birthday datetime; --birthday datetime data type field names, constraints

 

 

- Change the field data types, constraints
alter table student modify (field names) Birthday (constraint) DATE;

- change the field name
--alter table student change (formerly) Birthday (rename) Birth (data types, constraints) datetime default "0-0-0-0";
ALTER Change Table Student Birth datetime default Birthday "0-0 -0-0 ";

- Delete field (caution)
the ALTER drop the Table Student Age;