sql server - SQL Query for Max records for Multiple dates -


hi looking sql query select max records based on specific criteria customers. current situation below

customer            activity            date 1                   1                   01/02/2015 1                   1                   02/02/2015 1                   1                   03/02/2015 1                   2                   05/02/2015 1                   2                   07/02/2015 1                   3                   06/02/2015 2                   1                   01/01/2015 2                   2                   05/01/2015 2                   3                   11/01/2015

my required resultset should 

customer        activity1maxdate            activity2maxdate        activity3maxdate 1               03/02/2015                  07/02/2015              06/02/2015 2               01/01/2015                  05/01/2015              11/01/2015

the activities here limited 4 or 5 therefore ther e no requirement of dynamic column making

any please cheers

what asking called pivot table.
sql server has relational operator pivot , can read documentation here.

try this:

select customer,    [0] activity1maxdate , [1] activity2maxdate , [2] activity3maxdate , [3] activity4maxdate , [4] activity5maxdate yourtable pivot ( max(date) activity in ([0], [1], [2], [3], [4]) ) pivottable;

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