Postgresql Pivot Table









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Hi i have go a simple database with three fields :



Customer: Date: Amount:
ACME, 2018-01-01, 37.50


......



And want aggregate the amount per customer per month in a table.
The ideal would be:



month: 01,02,03,04,05,06,07,08,09,10,11,12
total: (sum of all sales per month)
acme : (sum of customer sales per month)
etc. ...


I thought a Crosstab like this would solve it, but I seem to be stuck here, any ideas:



SELECT *
FROM crosstab('SELECT "Customer", to_char("Date",'MM') as "Month",sum("Amount") as "Sale" FROM Sales where "Date">'2018-01-01' GROUP BY 1,2') as "Month" ("Customer" varchar, "Sale" real);









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    up vote
    0
    down vote

    favorite












    Hi i have go a simple database with three fields :



    Customer: Date: Amount:
    ACME, 2018-01-01, 37.50


    ......



    And want aggregate the amount per customer per month in a table.
    The ideal would be:



    month: 01,02,03,04,05,06,07,08,09,10,11,12
    total: (sum of all sales per month)
    acme : (sum of customer sales per month)
    etc. ...


    I thought a Crosstab like this would solve it, but I seem to be stuck here, any ideas:



    SELECT *
    FROM crosstab('SELECT "Customer", to_char("Date",'MM') as "Month",sum("Amount") as "Sale" FROM Sales where "Date">'2018-01-01' GROUP BY 1,2') as "Month" ("Customer" varchar, "Sale" real);









    share|improve this question

























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Hi i have go a simple database with three fields :



      Customer: Date: Amount:
      ACME, 2018-01-01, 37.50


      ......



      And want aggregate the amount per customer per month in a table.
      The ideal would be:



      month: 01,02,03,04,05,06,07,08,09,10,11,12
      total: (sum of all sales per month)
      acme : (sum of customer sales per month)
      etc. ...


      I thought a Crosstab like this would solve it, but I seem to be stuck here, any ideas:



      SELECT *
      FROM crosstab('SELECT "Customer", to_char("Date",'MM') as "Month",sum("Amount") as "Sale" FROM Sales where "Date">'2018-01-01' GROUP BY 1,2') as "Month" ("Customer" varchar, "Sale" real);









      share|improve this question















      Hi i have go a simple database with three fields :



      Customer: Date: Amount:
      ACME, 2018-01-01, 37.50


      ......



      And want aggregate the amount per customer per month in a table.
      The ideal would be:



      month: 01,02,03,04,05,06,07,08,09,10,11,12
      total: (sum of all sales per month)
      acme : (sum of customer sales per month)
      etc. ...


      I thought a Crosstab like this would solve it, but I seem to be stuck here, any ideas:



      SELECT *
      FROM crosstab('SELECT "Customer", to_char("Date",'MM') as "Month",sum("Amount") as "Sale" FROM Sales where "Date">'2018-01-01' GROUP BY 1,2') as "Month" ("Customer" varchar, "Sale" real);






      postgresql aggregate crosstab






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      edited Nov 11 at 15:06









      D-Shih

      24.6k61431




      24.6k61431










      asked Nov 11 at 15:04









      Locust

      174




      174



























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