Question

I have a query that searches for customers that have visted multiple times per day. If I run this query for 1 specific day it works. What I’d like to do is be able to query a range of dates. For example I want to search 12/1/12 – 1/31/13 and have it check each day for multiple visits, and display the date that customer visited multiple times. Below is my query that is not working:

SELECT        Customers.sBarcode, COUNT(Customers.sBarcode) AS [Number of Scans], Tickets.dtCreated
FROM            Tickets INNER JOIN
                         Customers ON Tickets.lCustomerID = Customers.lCustomerID
WHERE        (Tickets.dtCreated BETWEEN CONVERT(DATETIME, '2012-12-11 00:00:00', 102) AND CONVERT(DATETIME, '2012-12-12 00:00:00', 102)) AND (Tickets.dblTotal <= 0)
GROUP BY Customers.sBarcode, Tickets.dtCreated
HAVING        (COUNT(*) > 1)

Answer 1

Try something like this:

SELECT  Customers.sBarcode ,
        CAST(FLOOR(CAST(Tickets.dtCreated AS FLOAT)) AS DATETIME) AS dtCreatedDate ,
        COUNT(Customers.sBarcode) AS [Number of Scans]
FROM    Tickets
        INNER JOIN Customers ON Tickets.lCustomerID = Customers.lCustomerID
WHERE   ( Tickets.dtCreated BETWEEN CONVERT(DATETIME, '2012-12-01 00:00:00', 102)
                            AND     CONVERT(DATETIME, '2013-01-31 23:59:59', 102) )
        AND ( Tickets.dblTotal <= 0 )
GROUP BY Customers.sBarcode ,
        CAST(FLOOR(CAST(Tickets.dtCreated AS FLOAT)) AS DATETIME)
HAVING  ( COUNT(*) > 1 )

Assuming you have time information your dtCreated field, the cast/floor/cast would drop it, then you can group on your date and expand your date range.