MSSQL how to get value from table into variable ?

Posted on 2009-05-11
Last Modified: 2012-08-13
hi .. let's say i have a table and a variable.

SELECT email from parent where username = @pusername;  

will return the value that i need to have in @mail variable..

how can i set the @mail variable to get the value of the above sql query ? i also know that it will return only one result .
thanks in advance
Question by:cooking
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
LVL 31

Expert Comment

ID: 24352999
declare @mail varchar(50)

select @mail=email from parent where username=@parentname

select @mail
LVL 31

Expert Comment

ID: 24353020
you are sure about that your query will return only one value so there is no problem at all, since there is no concept like array in SQL Server so if your query will return more than one row in above query, only last email address will be stored in @mail variable.
LVL 31

Accepted Solution

RiteshShah earned 400 total points
ID: 24353029
sorry I did typo in WHERE clause in above example, it should be like below snippet, even check your table and field name before you run.

declare @mail varchar(50)

select @mail=email from parent where username = @pusername;

select @mail

Assisted Solution

bull_rider earned 100 total points
ID: 24353047
You can do this in two ways. One which RiteshShah has suggested and the other way is to use the Set option to store a value into a variable.

Declare @mail nvarchar(255)

Set @mail = (SELECT email from parent where username = @pusername)

Select @mail

You can use anyone of them accotding to your convenience.
LVL 31

Expert Comment

ID: 24353082
generally in the situation Author has, I would go for SELECT not for SET, nothing much different but just wanted to stick with ANSI standard, basically SET is used to assign static value and SELECT is for getting value in variable from QUERY. have a look.

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This post looks at MongoDB and MySQL, and covers high-level MongoDB strengths, weaknesses, features, and uses from the perspective of an SQL user.
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Familiarize people with the process of utilizing SQL Server functions from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Ac…
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.

717 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question