SQL SELECT Statement
The SELECT
statement in SQL is the fundamental command for retrieving data from a database. It's how you get information out of your tables.
SELECT: Definition and Usage
SELECT
lets you choose specific columns or all columns from one or more tables. The results are organized into a result set—a table containing the selected data. You can use a WHERE
clause to filter the results and an ORDER BY
clause to sort them.
Syntax
Syntax
SELECT column1, column2,...
FROM table_name;
Replace column1, column2,...
with the names of the columns you want, or use *
to select all columns.
Examples
Selecting Specific Columns
This example retrieves only the 'CustomerName' and 'City' columns from the 'Customers' table. (This assumes a 'Customers' table exists with those columns.)
Syntax
SELECT CustomerName, City FROM Customers;
Output
CustomerName | City
--------------------
(Customer names and cities will be displayed here)
Selecting All Columns
This example retrieves all columns from the 'Customers' table.
Syntax
SELECT * FROM Customers;
Output
(All columns and rows from the Customers table will be displayed here.)