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Sunday, 21 April 2019

SQL SELECT Statement

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SQL SELECT  Statement
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The SQL SELECT Statement
The SELECT statement is used to select data from a database.

The data returned is stored in a result table, called the result-set.

SELECT Syntax
SELECT column1, column2, ...
FROM table_name;
Here, column1, column2, ... are the field names of the table you want to select data from. If you want to select all the fields available in the table, use the following syntax:

SELECT * FROM table_name;
Demo Database
Below is a selection from the "Customers" table in the Northwind sample database:

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
4

Around the Horn Thomas Hardy 120 Hanover Sq. London WA1 1DP UK
5 Berglunds snabbköp Christina Berglund Berguvsvägen 8 Luleå S-958 22 Sweden
SELECT Column Example
The following SQL statement selects the "CustomerName" and "City" columns from the "Customers" table:

Example
SELECT CustomerName, City FROM Customers;
»
SELECT * Example
The following SQL statement selects all the columns from the "Customers" table:

Example
SELECT * FROM Customers;
»

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