TUTORIAL HOME SQL INSERT INTO SELECT Statement

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SQL INSERT INTO SELECT  Statement
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The SQL INSERT INTO SELECT Statement
The INSERT INTO SELECT statement copies data from one table and inserts it into another table.

INSERT INTO SELECT requires that data types in source and target tables match
The existing records in the target table are unaffected
INSERT INTO SELECT Syntax
Copy all columns from one table to another table:

INSERT INTO table2
SELECT * FROM table1
WHERE condition;
Copy only some columns from one table into another table:

INSERT INTO table2 (column1, column2, column3, ...)
SELECT column1, column2, column3, ...
FROM table1
WHERE condition;
Demo Database
In this tutorial we will use the well-known Northwind sample database.

Below is a selection from the "Customers" table:

CustomerID CustomerName ContactName Address City PostalCode Country
1

Alfreds Futterkiste Maria Anders Obere Str. 57 Berlin 12209 Germany
2 Ana Trujillo Emparedados y helados Ana Trujillo Avda. de la Constitución 2222 México D.F. 05021 Mexico
3 Antonio Moreno Taquería Antonio Moreno Mataderos 2312 México D.F. 05023 Mexico
And a selection from the "Suppliers" table:

SupplierID SupplierName ContactName Address City Postal Code Country Phone
1 Exotic Liquid Charlotte Cooper 49 Gilbert St. Londona EC1 4SD UK (171) 555-2222
2 New Orleans Cajun Delights Shelley Burke P.O. Box 78934 New Orleans 70117 USA (100) 555-4822
3 Grandma Kelly's Homestead Regina Murphy 707 Oxford Rd. Ann Arbor 48104 USA (313) 555-5735
SQL INSERT INTO SELECT Examples
The following SQL statement copies "Suppliers" into "Customers" (the columns that are not filled with data, will contain NULL):

Example
INSERT INTO Customers (CustomerName, City, Country)
SELECT SupplierName, City, Country FROM Suppliers;
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The following SQL statement copies "Suppliers" into "Customers" (fill all columns):

Example
INSERT INTO Customers (CustomerName, ContactName, Address, City, PostalCode, Country)
SELECT SupplierName, ContactName, Address, City, PostalCode, Country FROM Suppliers;
»
The following SQL statement copies only the German suppliers into "Customers":

Example
INSERT INTO Customers (CustomerName, City, Country)
SELECT SupplierName, City, Country FROM Suppliers
WHERE Country='Germany';
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