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Re: help with SQL join

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Neil Stlyz wrote:
Now... here is the problem I am having... the above SQL query is retrieving results from one table: sales I have another table called customers with a couple of fields (customerid, and customername are two of the fields). I want to join on the customerid in both tables to retrieve the customername in the query.
So I need the results to look something like this:
customerid | customername | TODAYS_USERS | LAST 7 DAYS | LAST 30 DAYS bigint | varchar | bigint | bigint | bigint
--------------------------------------------------------------------------------------------------------------------------------
8699 | Joe Smith | 1 | 1 | 1 8700 | Sara Olson | 1 | 12 | 17 8701 | Mike Jones | 3 | 5 | 19 Can someone show me how to use a JOIN with the above SQL Statement? I need to bring the customername field into the query from the other table and I have been having issues writting the query... can this even be done?

something like...

SELECT results.customerid, c.customername, count(distinct count1) AS "TODAYS_USERS",
count(distinct count2) AS "LAST 7 DAYS" ,
count(distinct count3) AS "LAST 30 DAYS"
FROM (SELECT distinct case when s.modified >= '2010-02-11' then s.modelnumber else null end as count1, case when s.modified >= '2010-02-04' then s.modelnumber else null end as count2, case when s.modified >= '2010-01-11' then s.modelnumber else null end as count3, s.customerid
          FROM sales as s WHERE s.modelnumber LIKE 'GH77%') AS results
   JOIN customers as c ON (results.customerid = c.customerid)
   GROUP BY results.customerid



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