Need Help with SQL Query in Access
I have been handed a database to run a few queries on.
For one query I have to find the top 10 applications, from two different tables with hundreds of records. then on row (11) I will need to SUM or Count the remaining records and name the row "Other".
I have worked out the following code so far.
SELECT TOP 10 ApplicationTbl.AppName, Count(*) AS SessionNos
FROM ApplicationTbl INNER JOIN SessionTbl ON ApplicationTbl.AppID = SessionTbl.AppID
GROUP BY ApplicationTbl.AppName;
ORDER BY Count(*) DESC;
I am displayed with 10 top records, but I know need to sum the remaining SessionNos together onto row 11 and rename the AppName to "Other"
Can anyone please help, or recommend anything.
FYI: I am using Access 2007 built in开发者_C百科 SQL View, and I know that there is limits to how much can be done.
I am not very good with SQL, its new to me.
Thanks :)
What you need is
1) The Query above that Gets the top 10, call it Top10Apps.
2) A second Query that selects from the same tables above, but where the rows are not in Top10Apps, and sums the rows / returns the sums & aggrigates, with the "Other" tag. Call This SumOfNotTop10Apps
3) A third query that unions Top10App & SumOfNotTop10Apps
If that's not clear post some comments and I'll try to make it clearer.
SELECT TOP 10 ApplicationTbl.AppName, Count(*) AS SessionNos
FROM ApplicationTbl
INNER JOIN SessionTbl
ON ApplicationTbl.AppID = SessionTbl.AppID
GROUP BY ApplicationTbl.AppName
ORDER BY Count(*) DESC
UNION ALL
SELECT "Other" AS AppName, Count(*) AS SessionNos
FROM (ApplicationTbl
INNER JOIN SessionTbl
ON ApplicationTbl.AppID = SessionTbl.AppID)
LEFT JOIN (SELECT TOP 10 ApplicationTbl.AppName, Count(*) AS SessionNos
FROM ApplicationTbl
INNER JOIN SessionTbl
ON ApplicationTbl.AppID = SessionTbl.AppID
GROUP BY ApplicationTbl.AppName;
ORDER BY Count(*) DESC) AS s
ON ApplicationTbl.AppName = s.AppName
WHERE s.AppName Is Null
GROUP BY "Other"
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