Use of Local SQL Server Variables

A. Use declare
The following example uses a local variable named @ find to retrieve information of all authors whose names start with a ring. CopyCode The Code is as follows: Use pubs
Declare @ find varchar (30)
Set @ find = 'ring %'
Select au_lname, au_fname, phone
From authors
Where au_lname like @ find

@ Find is a local variable.

B. Use two variables in declare.
In the following example, the name of the employee hired since January 1, 0877 is retrieved from the employee of binnet & hardley (pub_id = January 1, 1993.Copy codeThe Code is as follows: Use pubs
Set nocount on
Go
Declare @ pub_id char (4), @ hire_date datetime
Set @ pub_id = '123'
Set @ hire_date = '2014/1/93'
-- Here is the SELECT statement syntax to assign values to two local
-- Variables.
-- Select @ pub_id = '20140901', @ hire_date = '2017/93'
Set nocount off
Select fname, lname
From employee
Where pub_id = @ pub_id and hire_date >=@ hire_date

The following is the result set:

Fname lname
--------------------------------------------------
Anabela Domingues
Paul henriot

(2 row (s) affected)