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In SQL, after creation of table we insert data using INSERT keyword. Suppose we have to insert 10 records, we write 10 INSERT statement for inserting them. However, in SQL Server 20008 a new feature called Row constructor has been introduced which allows us to write a single INSERT statement for inserting more than one record at a time. |
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Consider the following scenario: Step 1 : Create table: CREATE TABLE USER(ID intNOTNULL, NAME varchar(50)NULL) Step 2 : Insert a record into Table: Now insert record into this table in traditional ways |
INSERT INTO USER(ID, NAME)VALUES (1,'userA') INSERT INTO USER(ID, NAME)VALUES (2,'userB') INSERT INTO USER(ID, NAME)VALUES (3,'userC') INSERT INTO USER(ID, NAME)VALUES (4,'userD') INSERT INTO USER(ID, NAME)VALUES (5,'userE') INSERT INTO USER(ID, NAME)VALUES (6,'userF') INSERT INTO USER(ID, NAME)VALUES (7,'userG') INSERT INTO USER(ID, NAME)VALUES (8,'userH') INSERT INTO USER(ID, NAME)VALUES (9,'userI') INSERT INTO USER(ID, NAME)VALUES (10,'userJ')
Step 3 : Delete all records from the USER table
TRUNCATE TABLE USER
DELETE * FROM USER
Step 4 : Insert all records into table using the Row constructor
INSERT INTO USER(ID, NAME)
VALUES(1,'userA'),
(2,'userB'),
(3,'userC'),
(4,'userD'),
(5,'userE'),
(6,'userF'),
(7,'userG'),
(8,'userH'),
(9,'userI'),
(10,'userJ')