Select results based on a value within a table

• gjoelson 29755

  SSC Eights!

  Points: 848

  More actions

  October 18, 2017 at 12:48 pm

  #329261

  Morning All,

  I’m stumped on a sqlquery and thought I might ask for some help. first time I'm trying this.

  I'm trying to build a select query that pulls fields from 3 related tables (transactions,Destinatin,Rates)  the Rates table has two particular columns [Rate A] and [Rate B] and I need to select either one of these based on a value in the Transaction table [Tonnage] column. So basically if the tonnage is <= 15 then select [Rate A] if not [Rate B]
  
  I've joined the 3 tables , I'm think I should use a subquery in a case like below but I'm not sure how to put that together, or whether this is the best way to do it.

  Case when tonnage >= 15 then subquery1 else subquery2

  End

  -------------------------------------------------------------------
  I've attached sample of my script.

  Any help is much appreciated.

• Thom A

  SSC Guru

  Points: 99126

  More actions

  October 18, 2017 at 12:53 pm

  #1964266

  I think this is what you're after.
  CASE WHEN Tonnage <= 15 THEN [Rate A] ELSE [Rate B] END

  Thom~

  Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.
  Larnu.uk

• gjoelson 29755

  SSC Eights!

  Points: 848

  More actions

  October 18, 2017 at 1:59 pm

  #1964281

  Thank you for your quick reply....yes that worked like a dream , I wish I had come here earlier. 

  Thanks ! 😀

• January 7, 2021 at 9:36 am

  This was removed by the editor as SPAM

• January 7, 2021 at 9:38 am

  This was removed by the editor as SPAM

• April 22, 2021 at 8:55 pm

  This was removed by the editor as SPAM

• April 23, 2021 at 8:18 pm

  This was removed by the editor as SPAM

• April 23, 2021 at 8:19 pm

  This was removed by the editor as SPAM

• April 23, 2021 at 9:15 pm

  This was removed by the editor as SPAM

• April 23, 2021 at 9:16 pm

  This was removed by the editor as SPAM