Advertisements
Advertisements
प्रश्न
Write a SQL statement to modify the student table structure by adding a new field.
Advertisements
उत्तर
Syntax:
ALTER TABLE < table-name > ADD < column name >< data type >< size > ;
Example:
ALTER TABLE student ADD (age integer (3)).
APPEARS IN
संबंधित प्रश्न
Differentiate Unique and Primary Key constraint.
Write the difference between table constraint and column constraint?
What is a constraint?
Write a short note on Primary key constraints.
Write any three DDL commands.
Write a SQL statement using the DISTINCT keyword.
Consider the following employee table. Write SQL commands for the question.
| EMP CODE | NAME | DESIG | PAY | ALLO WANCE |
| S1001 | Hariharan | Supervisor | 29000 | 12000 |
| P1002 | Shaji | Operator | 10000 | 5500 |
| P1003 | Prasad | Operator | 12000 | 6500 |
| C1004 | Manjima | Clerk | 8000 | 4500 |
| M1005 | Ratheesh | Mechanic | 20000 | 7000 |
To add a new row.
Consider the following employee table. Write SQL commands for the question.
| EMP CODE | NAME | DESIG | PAY | ALLO WANCE |
| S1001 | Hariharan | Supervisor | 29000 | 12000 |
| P1002 | Shaji | Operator | 10000 | 5500 |
| P1003 | Prasad | Operator | 12000 | 6500 |
| C1004 | Manjima | Clerk | 8000 | 4500 |
| M1005 | Ratheesh | Mechanic | 20000 | 7000 |
To display the details of all employees who are operators.
Construct the following SQL statement in the student table-
SELECT statement using GROUP BY clause.
Construct the following SQL statement in the student table-
SELECT statement using ORDER BY clause.
