The basic syntax of the ALTER TABLE statement : ALTER TABLE « Table « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Table » ALTER TABLE 
3. 2. 1. The basic syntax of the ALTER TABLE statement
ALTER TABLE table_name [WITH CHECK|WITH NOCHECK]
{ADD new_column_name data_type [column_attributes|
 DROP COLUMN column_name |
 ALTER COLUMN column_name new_data_type [NULL|NOT NULL|
 ADD [CONSTRAINTnew_constraint_definition |
 DROP [CONSTRAINTconstraint_name}
3. 2. ALTER TABLE
3. 2. 1. The basic syntax of the ALTER TABLE statement
3. 2. 2. drop column syntax
3. 2. 3. Change the length of the emp_name column in the employee table from varchar(30) to varchar(50)
3. 2. 4. Alter table to add a constraint based on IN function
3. 2. 5. Altering a Table: A Basic Form
3. 2. 6. Alter table to add column
3. 2. 7. Alter table to drop a column
3. 2. 8. The DROP COLUMN clause provides the ability to drop an existing column of the table.
3. 2. 9. ALTER data size for a COLUMN
3. 2. 10. Altering a Table: Enhanced Form
3. 2. 11. Use ALTER TABLE statement to define the primary key
3. 2. 12. Use ALTER TABLE statement to define the foreign key of a table.
3. 2. 13. Each declarative integrity constraint can be removed using the DROP clause of the ALTER TABLE statement.
3. 2. 14. Expanded nvarchar(20) to nvarchar(300)
3. 2. 15. Creating a Computed Column in alter table command
3. 2. 16. Create a Table Index
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