SQL Queries - DML Commands
- 1. Program No. # 02 Object :- Write SQL Queries for DML (Data Manipulation Language) Statement. DML Commands:- INSERT Query SELECT Query UPDATE Query DELETE Query 1. INSERT Command:- INSERT command is used to insert data into a table. Following is the syntax:- Example:- COMMIT is a transactional control key word that saves the entered data. 2. SELECT Command:- SELECT statement is used to retrieve data from one or more objects within a database. INSERT INTO table_name VALUES (data_1, data_2,….data_n); INSERT INTO STUDENT VALUES (9002, Monish , 23) INSERT INTO STUDENT VALUES (9003, Shubham, 19); INSERT INTO STUDENT VALUES (9004, Shubham Kumar, 19); INSERT INTO STUDENT VALUES (9005, Sumit Kumar, 21); COMMIT;
- 2. Following is the syntax:- Example:- 3. UPDATE Command:- UPDATE command is used to update any record of data in a table. Following is the Syntax:- Example:- 4. DELETE Command:- DELETE command is used to delete data from a table. Following is the syntax:- Delete all Records from table:- SELECT column_name FROM table_name ; SELECT AGE FROM STUDENT ; UPDATE table_name SET column_name = ‘Input_Value’ WHERE condition ; UPDATE STUDENT SET AGE = 21 WHERE Roll_No. = 9005 ; DELETE FROM table_name ;
- 3. Example:- Delete a particular Record From Table:- Syntax:- Example:- DELETE FROM Student ; DELETE FROM table_name WHERE Condition ; DELETE FROM STUDENT WHERE Roll_No = 9002;