What do you mean by ALTER TABLE command?

Question

The SQL ALTER TABLE command is used to add, delete or modify columns in an existing table. You should also use the ALTER TABLE command to add and drop various constraints on an existing table.

What is ALTER TABLE command?

The ALTER TABLE statement is used to add, delete, or modify columns in an existing table. The ALTER TABLE statement is also used to add and drop various constraints on an existing table.

What can we do with ALTER command?

alter command is used for altering the table structure, such as,1to add a column to existing table.2to rename any existing column.3to change datatype of any column or to modify its size.4to drop a column from the table.

What is the use of ALTER command class 10?

ALTER Command is used to add, delete, modify the attributes of the relations (tables) in the database.

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