Displaying 1 result from an estimated 1 matches for "numberofcustomers".
2007 Jan 26
3
Using tapply to create a new table
All,
I'm sure that this is covered somewhere, but I can't seem to find a good explanation. I have an existing table that contains information grouped by date. This is as so:
Day NumberOfCustomers NumberOfComplaints
20060512 10040 40
20060513 32420 11
...
I also have a table at the detail level as so:
Day Meal PricePaid UsedCupon
20060512 Fish 14 Y
20060512 Chicken 20 N
...
Is there a simple way to create summaries on the detail table and then join them into the first table a...