Do you need ELSE IF? - SQL Server Forums

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Do you need ELSE IF?

Author

Topic

MMMY
Starting Member

14 Posts

Posted - 2012-08-23 : 13:28:24

Here is a sample code

IF COLOR = 'BLUE'
BEGIN
SET COLOR = 'RED'
END
IF COLOR = 'RED'
BEGIN
SET COLOR = 'YELLOW'
END

So if I pass a value that is blue, will the result be RED or YELLOW? I am trying to understand a script I inherited where I only want COLOR to change based on the ORIGINAL. So if it's BLUE, I want it to become RED, not YELLOW.

sunitabeck
Master Smack Fu Yak Hacker

5155 Posts

Posted - 2012-08-23 : 13:51:37

You would need ELSE as in:

IF @COLOR = 'BLUE'
BEGIN
    SET @COLOR = 'RED'
END

ELSE IF @COLOR = 'RED'
BEGIN
    SET @COLOR = 'YELLOW'
END

An alternate way that I like better is using a CASE expression:

SET @COLOR = 
CASE 
	WHEN @color = 'BLUE' THEN 'RED'
	WHEN @color = 'RED' THEN 'YELLOW'
	ELSE @color
END

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2012-08-23 : 14:10:25

you can also use simple case structure here

CASE @Color
WHEN 'BLUE' THEN 'RED'
WHEN 'RED' THEN 'YELLOW'
ELSE @Color
END

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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