how to fire a query using a value stored in a variable in sql ?

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String t=xyz;

SQL

select * from table1 where name = t;

why is this not responding ?

Posted 20-Mar-14 10:24am

Bharat_Jain

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Richard C Bishop 20-Mar-14 16:30pm

The context of your question is not clear. You cannot declare variables the same way in T-SQL as you do C#.

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Richard C Bishop · Answer 1 · 2014-03-20T10:32:00

Solution 1

If you want to create a variable and use it in a query, it would look something like this:

DECLARE @t varchar(15)

SET @t = 'xyz'

SELECT * FROM table1 WHERE name = @t

Posted 20-Mar-14 10:32am

Richard C Bishop

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Bharat_Jain 20-Mar-14 16:38pm

But I am using JDBC So how it is possible ?

Richard C Bishop 20-Mar-14 16:41pm

Are you wanting to execute this query from code-behind?

Bharat_Jain 20-Mar-14 16:51pm

Yes . Supposing that i have 2 JFrame and in first JFrame i have a textbox and a button. when i click that button the data of that text field is transferred to another Jframe and then stored in variable a on other JFrame. Now suppose that variable is a. and i am trying something like this on second jFrame to print data based on where condition

String a=xyz;
select * from table1 where name=a;

the problem is i am not able to fetch the value stored in a variable to execute query .