Question

I am just facing trouble to sort out the query I need. I have a scenario like this

colDist       colGender           attnedancePrcnt
Place-1        Male                 2.5 %
Place-1        Female               1.5%
Place-2        Male                 3.5%
Place-2        Female               2.1%

Now I need a query in mysql to have the data like this

colDist       colMale           colFemale
Place-1        2.5%                1.5 %
Place-2        3.5%                2.1 % 

This is sort of group by coldDist but I am just facing trouble to make the colMale and colFemale from the first data set into the second one.

Advance thanks.

This approach…..

select colDist, if(colGender='Male',colGender,null ) as   colMale ,
        if(colGender='Female',colGender,null ) as   colFemale 
 from tablename

gives me the result like this

colDist       colMale           colFemale          attnedancePrcnt
Place-1        Male                NULL                 2.5
Place-1        NULL                Female               1.5
Place-2        Male                NULL                 3.5
Place-2        NULL                Female               2.1

But again I need them like this:

colDist       colMale           colFemale
Place-1        2.5%                1.5 %
Place-2        3.5%                2.1 % 

So how can I group or pivot the data as required?

Thanks.

Answer 1

SELECT
    t1.colDist,
    t1.attnedancePrcnt AS colMale,
    t2.attnedancePrcnt AS colFemale
FROM
    tablename AS t1
INNER JOIN tablename AS t2 ON t1.colDist = t2.colDist
AND t1.colGender != t2.colGender
WHERE
    t1.colGender = 'Male'

It’s also worth noting that “attnedance” should be spelt “attendance”.