SQL SERVER: INSERT INTO SELECT FROM Statement to copy data from one table to another

Introduction: In this article I am going to share how to copy/select data from all or selected columns of one table and insert into other existing table in SQL. 

In previous articles i explained How to Insert multiple records in table in single insert statement and Update existing column values with linear serial numbers without loop and Get day,month and year from current or any date and Count number of occurrences of character or word in a string in sql and Declare and use table variables in sql server

Description: The INSERT INTO SELECT statement copies/selects data from one table (Source Table) and inserts it into other existing table (Destination Table). Existing data in destination table will remain unaffected. New rows will be appended to last of existing records.

 Implementation: Let’s create a sample table and perform the desired operation.

 --Create a table(Source)

GO

CREATE TABLE tbBooks

(

    BookId        INT NOT NULL IDENTITY(1,1) PRIMARY KEY,

    BookName   VARCHAR(100),

    Author         VARCHAR(100),

    Publisher      VARCHAR(100),

    BookPrice     DECIMAL(10,2)

)

--Add some dummy data into the table

GO

INSERT INTO tbBooks VALUES

('Asp.Net','Ajay','Rozy Publication',1200),

('C#.Net','Sahil','Jai Publication',1000),

('VB.Net','Nancy','Rozy Publication',970),

('MVC','Sahil','Amar Publication',1480),

('JAVA','Supreet','Sam Publication',850),

('PHP','Parvesh','Maya Publication',800)

 --Check inserted data

SELECT * FROM tbBooks 

BookId	BookName	Author	Publisher	BookPrice
1	Asp.Net	Ajay	Rozy Publication	1200.00
2	C#.Net	Sahil	Jai Publication	1000.00
3	VB.Net	Nancy	Rozy Publication	970.00
4	MVC	Sahil	Amar Publication	1480.00
5	JAVA	Supreet	Sam Publication	850.00
6	PHP	Parvesh	Maya Publication	800.00

--Create another table(Destination)

GO

CREATE TABLE tbSelectedBooks

(

    BookId        INT NOT NULL IDENTITY(1,1) PRIMARY KEY,

    BookName   VARCHAR(100),

    Author        VARCHAR(100),

    Publisher     VARCHAR(100),

    BookPrice    DECIMAL(10,2)

)

  

--Let’s Copy data except BookId from tbBooks table and insert into tbSelectedBooks table

 Copy data from one table and insert to other:

INSERT INTO tbSelectedBooks(BookName, Author, Publisher, BookPrice) SELECT BookName, Author, Publisher, BookPrice FROM  tbBooks;

Note: We can copy data from all or any number of columns from one table and insert into other table

--Check inserted data

SELECT * FROM tbSelectedBooks     

BookId	BookName	Author	Publisher	BookPrice
1	Asp.Net	Ajay	Rozy Publication	1200.00
2	C#.Net	Sahil	Jai Publication	1000.00
3	VB.Net	Nancy	Rozy Publication	970.00
4	MVC	Sahil	Amar Publication	1480.00
5	JAVA	Supreet	Sam Publication	850.00
6	PHP	Parvesh	Maya Publication	800.00

Copy data based on condition:

Suppose we want to copy and insert only those records from tbBooks table where Book price is greater than 1000 then the query will be as:

--Let's first truncate all existing data for clarity

TRUNCATE TABLE tbSelectedBooks

INSERT INTO tbSelectedBooks(BookName,Author,Publisher,BookPrice) SELECT BookName,Author,Publisher,BookPrice FROM  tbBooks WHERE BookPrice>1000;

--Check inserted data

SELECT * FROM tbSelectedBooks     

BookId	BookName	Author	Publisher	BookPrice
1	Asp.Net	Ajay	Rozy Publication	1200.00
2	MVC	Sahil	Amar Publication	1480.00

Now over to you:

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