postgres: Combining filter() with a percentile_cont()












0















Trying to use a filter() clause within a call to percentile_const and I am not sure I can do this. Is there a way? Here's the example query:



select

    count(*) as n1,

    count(*) filter(where ha >= 0) as n2,

    percentile_cont(.9) within group (order by es asc) as p1,

    percentile_cont(.9) filter (where ha >= 0) within group (order by es asc) as p2

from mytable where mypid = 123;


The query works fine without the p2 call of course, but you can see what I want to do.






postgresql







share|improve this question



























    0















    Trying to use a filter() clause within a call to percentile_const and I am not sure I can do this. Is there a way? Here's the example query:



    select
    
    count(*) as n1,
    
    count(*) filter(where ha >= 0) as n2,
    
    percentile_cont(.9) within group (order by es asc) as p1,
    
    percentile_cont(.9) filter (where ha >= 0) within group (order by es asc) as p2
    
from mytable where mypid = 123;


    The query works fine without the p2 call of course, but you can see what I want to do.






    postgresql







    share|improve this question

























      0












      0








      0








      Trying to use a filter() clause within a call to percentile_const and I am not sure I can do this. Is there a way? Here's the example query:



      select
      
    count(*) as n1,
      
    count(*) filter(where ha >= 0) as n2,
      
    percentile_cont(.9) within group (order by es asc) as p1,
      
    percentile_cont(.9) filter (where ha >= 0) within group (order by es asc) as p2
      
from mytable where mypid = 123;


      The query works fine without the p2 call of course, but you can see what I want to do.






      postgresql







      share|improve this question














      Trying to use a filter() clause within a call to percentile_const and I am not sure I can do this. Is there a way? Here's the example query:



      select
      
    count(*) as n1,
      
    count(*) filter(where ha >= 0) as n2,
      
    percentile_cont(.9) within group (order by es asc) as p1,
      
    percentile_cont(.9) filter (where ha >= 0) within group (order by es asc) as p2
      
from mytable where mypid = 123;


      The query works fine without the p2 call of course, but you can see what I want to do.






      postgresql




      postgresql






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 19 '18 at 19:25









      WellsWells

      3,59083763




      3,59083763
























          1 Answer
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          1














          The filter needs to go after the within group part:



          select
          
    count(*) as n1,
          
    count(*) filter(where ha >= 0) as n2,
          
    percentile_cont(.9) within group (order by es asc) as p1,
          
    percentile_cont(.9) within group (order by es asc) filter (where ha >= 0) as p2
          
from mytable 
          
where mypid = 123;





          share|improve this answer























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            The filter needs to go after the within group part:



            select
            
    count(*) as n1,
            
    count(*) filter(where ha >= 0) as n2,
            
    percentile_cont(.9) within group (order by es asc) as p1,
            
    percentile_cont(.9) within group (order by es asc) filter (where ha >= 0) as p2
            
from mytable 
            
where mypid = 123;





            share|improve this answer




























              1














              The filter needs to go after the within group part:



              select
              
    count(*) as n1,
              
    count(*) filter(where ha >= 0) as n2,
              
    percentile_cont(.9) within group (order by es asc) as p1,
              
    percentile_cont(.9) within group (order by es asc) filter (where ha >= 0) as p2
              
from mytable 
              
where mypid = 123;





              share|improve this answer


























                1












                1








                1







                The filter needs to go after the within group part:



                select
                
    count(*) as n1,
                
    count(*) filter(where ha >= 0) as n2,
                
    percentile_cont(.9) within group (order by es asc) as p1,
                
    percentile_cont(.9) within group (order by es asc) filter (where ha >= 0) as p2
                
from mytable 
                
where mypid = 123;





                share|improve this answer













                The filter needs to go after the within group part:



                select
                
    count(*) as n1,
                
    count(*) filter(where ha >= 0) as n2,
                
    percentile_cont(.9) within group (order by es asc) as p1,
                
    percentile_cont(.9) within group (order by es asc) filter (where ha >= 0) as p2
                
from mytable 
                
where mypid = 123;






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 19 '18 at 21:31









                a_horse_with_no_namea_horse_with_no_name

                298k46456548




                298k46456548
































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