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Wednesday, 5 September 2012

Select Statement in Sql server

The SELECT statement allows you to retrieve records from one or more tables in your database.
The syntax for the SELECT statement is:
SELECT columns
FROM tables
WHERE predicates;

Example #1:

Let's take a look at how to select all fields from a table.
SELECT *
FROM suppliers
WHERE city = 'Newark';
In our example, we've used * to signify that we wish to view all fields from the suppliers table where the supplier resides in Newark.

Example #2:

You can also choose to select individual fields as opposed to all fields in the table.
For example:
SELECT name, city, state
FROM suppliers
WHERE supplier_id > 1000;
This select statement would return all name, city, and state values from the suppliers table where the supplier_id value is greater than 1000.

Example #3:

You can also use the select statement to retrieve fields from multiple tables.
SELECT orders.order_id, suppliers.name
FROM suppliers, orders
WHERE suppliers.supplier_id = orders.supplier_id;
The result set would display the order_id and supplier name fields where the supplier_id value existed in both the suppliers and orders table.

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