Question

i need Sql query Convert Table1 to Table2

select Count(Page) as VisitingCount,CONVERT(VARCHAR(5),Date, 108) as [Time] from scr_SecuristLog     
where Date between '2009-04-30' and '2009-05-02'    
and [user] in(select USERNAME               
    from scr_CustomerAuthorities where customerID=Convert(varchar,4) and ID=Convert(varchar,43) )    
group by CONVERT(VARCHAR(5),Date, 108) order by CONVERT(VARCHAR(5),Date, 108) asc 

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Table1

VisitingCount Date
1——————-15:09
3——————-15:10
7——————-15:15
1——————-15:39
2——————-15:40
3——————-15:47

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How can i change this table below table

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Table2

VisitingCount Date
11——————-15:00-15:30
6——————-15:30-16:00

Answer 1

Use a case statement to create a category, and then count by that category.

For (oversimplified) example.

select case when Date < '15:30' then '15:00 - 15:30'
            when Date < '16:00' then '15:30 - 16:00'
            else 'After 16:00' end as category
into #temp1
from Table1

select count(*) as VistingCount, category as Date
from #temp1
group by category