How to create a dropdown list in which one choice will have the two possible values?

• marksquall

  Ten Centuries

  Points: 1093

  More actions

  November 28, 2013 at 9:36 am

  #300888

  Dear sqlservercentral members,

  Hello and a pleasant day.

  I would like to ask how to create a dropdown list in which one choice will have the two possible values? In the report I am creating for a certain customer, they need to choose between USA and EUROPE, and BOTH of them…the customer who requested the report wants a <BOTH>, USA, EUROPE should appear on the dropdown choice. In my first work, I declare a parameter (the name is @Country) that allows multiple values, so the output of the dropdown is:

  (Select All)

  USA

  EUROPE

  But like what I'd said, the customer wants a dropdown like:

  <BOTH>

  USA

  EUROPE

  So if the customer selects <BOTH>, it will be both USA and EUROPE.

  By the way, here is the query I used:

  SELECT * FROM tblInvoice WHERE COUNTRY IN (@Country)

  Thank you for any advice that you may give.

  Respectfully Yours,

  MarkSquall

  ________________________________
  "Listen to advice and accept instruction, and in the end you will be wise." -Proverbs 19:20

• mister.magoo

  SSC-Forever

  Points: 47068

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  November 28, 2013 at 6:03 pm

  #1669741

  Some choices, which one is best for you will depend on your setup.

  First though, Country in (@Country) is misleading as @Country is one value, not a list by the time SQL gets to see it, so changing your WHERE clause to Country = @Country would achieve the same result but make it clear you understand that @Country is a single value...

  1. add OR @Country='BOTH' to the query (and use "BOTH" as the value for the "BOTH" label in your dropdown list...

  2. change to using Country = ISNULL(NULLIF(@Country,'BOTH'),Country)

  3. change your query to use an IF

  IF @Country = 'BOTH'

  SELECT col1 ,col2, col3 FROM tblInvoice

  ELSE

  SELECT col1 ,col2, col3 FROM tblInvoice WHERE Country = @Country

  4. Filter the data in the report and set the value of the label "BOTH" to USA,EUROPE in the dropdown

  I am sure there are other ways also, these are just a few.

  I would personally prefer options 3 or 4 but it all depends on your exact situation.

  MM
  

  ---

  
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