Trying to replace UNION

• acemary4918

  Newbie

  Points: 3

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  February 3, 2016 at 5:28 am

  #1856236

  Hey everyone! I'm having a slight problem with the Union Template. When I try previewing the LEARN MORE button so the lightbox appears and the contact us form pops-up, it doesn't show the full rectangle around the form nor does the text fit in the form fields. What can I do to fix this? Thanks so much! VMware Training in Chennai 🙂 | Web Designing Training in Chennai 🙂

  PHP Training in Chennai 🙂

• ChrisM@Work

  SSC Guru

  Points: 186127

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  February 3, 2016 at 5:33 am

  #1856239

  SQL006 (2/3/2016)

  ---

  Thank you guys for your valuable inputs. I checked the execution plan for the UNION and the CROSS APPLY query, i am surprised that the UNION query is still faster than CROSS APPLY query by 1-2 seconds,even though in UNION query it accessing the table twice in comparison to CROSS APPLY where it accessing the table only once.

  For the execution order of query i referred the itzik ben-gan logical order processing.

  Thanks for all your suggestions.

  That's an interesting and unexpected observation. Care to share your code?

  ^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

  For fast, accurate and documented assistance in answering your questions, please read this article.
  Understanding and using APPLY, (I) and (II) Paul White
  Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

• Luis Cazares

  SSC Guru

  Points: 183706

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  February 3, 2016 at 8:07 am

  #1856300

  It might be caused by how the date ranges are handled. The union might allow to get a more straight forward plan.

  Maybe if you combine the solutions, you could get better performance.

  SELECT

  t.Id,

  x.Amount,

  t.CashFlowDate,

  x.AmtType

  FROM #Test t

  CROSS APPLY (

  VALUES

  (t.Principal, 'Principal'), --No need for additional date condition

  (CASE WHEN t.CashFlowDate >= '2016-01-02' THEN t.Interest END, 'Interest') --Exclude the first day

  ) x (Amount,AmtType)

  WHERE x.Amount > 0

  AND CashFlowDate between '2016-01-01' AND '2016-01-05'; --Leave a single date condition

  Luis C.
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