SQL Group by sex then age -


i have patients table below:

patients

name       gender   dob student    m      03-mar-2001  student b    f      08-dec-1985  student c    f      12-sep-1990  student d    m      20-may-1981

i have sql statement display result below:

gender  0-19  20-29  30-39 m         1     0      1  f         0     2      0

please check below query

create table #t1 (name varchar(100),gender varchar(10),dob date)  insert #t1(name,gender,dob) values('student a','m','03-mar-2001') insert #t1(name,gender,dob) values('student b','f','08-dec-1985') insert #t1(name,gender,dob) values('student c','f','12-sep-1990') insert #t1(name,gender,dob) values('student d','m','20-may-1981')  select gender , sum(case when  datediff(yy,dob,getdate()) between 0 , 20 1 else 0 end)  [0-19], sum(case when  datediff(yy,dob,getdate()) between 21 , 30  1 else 0 end) [20-29], sum(case when  datediff(yy,dob,getdate()) between 31 , 40  1 else 0 end) [30-39] #t1 group gender

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