Tableau Queries Better With Short & Wide or Tall & Thin Tables in SQL Server? -


i'm trying improve query time tableau when queries data table in sql server database. when considering # of rows vs. # of columns, should have short & wide table or tall & thin?

this resource has done research proving tall & thin approach better: http://www.powerpivotpro.com/2011/08/less-columns-more-rows-more-speed/, wanted few more sources of info before started formatting of tables.

thanks

after edit: multiple tall & thin tables joined less performant 1 short & wide table when tableau pulling data make visualizations?

tableau better tall data wide data. because better when numbers graph in same column. tableau performs category field. category can variety of different things when used in boxes "color", "detail" (breakdown by), "label".

tall example

  • date, category, value
  • date1, sales, 10
  • date1, revenue, 5
  • date2, sales, 12
  • date2, revenue, 6

wide example

  • date, sales, revenue
  • date1, 10, 5
  • date2, 12, 6

have heard excel data reshaper? here 2 links it.

http://www.tableausoftware.com/about/blog/2012/03/reshaping-data-made-easy-16353

http://kb.tableausoftware.com/articles/knowledgebase/addin-reshaping-data-excel


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