sql query with if condition?

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SQL-Server-2014

SQL

ect O.OrderID,D.OrderDetailID,ProductName,
--case when R.OrderDetailID   = 65 then '0'
--else '1'
--end

IF (D.OrderDetailID != R.OrderDetailID) Then '1'
Else '0'
end
--Returned='0'
From dbo.vOrderDetails D Join tblOrders O On O.OrderID = D.OrderID
Join tblCustomerLogins L On O.CustomerID = L.CustomerID
join tblOrderReturns R on R.OrderDetailID = D.OrderDetailID
Where O.OrderID = 65 And L.SessionID ='8004837C7D62qdSV8'

If condition is not correct format

Posted 23-Jan-15 3:09am

santhu888

Updated 23-Jan-15 3:10am

v2

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Tomas Takac 23-Jan-15 9:18am

Why is the "case" commented out? That's actually the correct solution. You cannot use "if-else" in select list like that. BTW there is no "then" in T-SQL.

jaket-cp 23-Jan-15 9:56am

then for when but not of if..else
right :)

3 solutions

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Wendelius · Answer 1 · 2015-01-23T03:20:00

You can use the CASE as you have tried. Sommthing like:

SQL

select O.OrderID,D.OrderDetailID,ProductName,
case 
   when D.OrderDetailID != R.OrderDetailID then '1'
   else '0'
end as ColName
From dbo.vOrderDetails D 
     Join tblOrders O         On O.OrderID = D.OrderID
     Join tblCustomerLogins L On O.CustomerID = L.CustomerID
     join tblOrderReturns R   On R.OrderDetailID = D.OrderDetailID
Where O.OrderID = 65 
And L.SessionID ='8004837C7D62qdSV8'

For details see CASE (Transact-SQL)[^]

Sri Nivas.M · Answer 2 · 2015-01-23T03:18:00

Solution 1

It can be done using Case statement.
[Check here]

Posted 23-Jan-15 3:18am

Sri Nivas.M

RaisKazi · Answer 3 · 2015-01-23T03:19:00

Solution 2

Use Case statement instead. Have a look at below link for more information.

http://www.techonthenet.com/sql_server/functions/case.php

Posted 23-Jan-15 3:19am

RaisKazi