#sql alter add column

ALTER statement different SQL Queries you need to modify objects

You can modify database objects using ALTER. The database objects are related to data, so you must be careful enough to alter any objects. Why I am stressing is the mistake you made causes to lose all the data.

Examples

SQL ALTER statement

The objects on which ALTER you can use are TABLE, INDEX, FUNCTION, MASK, TABLESPACE, SERVER, SEQUENCE, and THRESHOLD

ALTER TABLE 

ALTER TABLE table…