On pon, paź 21, 2013 at 08:38:52 -0400, Robert James wrote: > I have a table of event_id, event_time. Many times, several events > happen in a row. I'd like a query which replaces all of those events > with a single record, showing the count. > > Eg: Take A,A,A,B,C,A,D,A,A,D,D,B,C,C and return: A,3; B,1; C,1; A,1; > D,1; A,2; D,2; B,1; C,2 > How can I do that?
"A" or other letters don't really match your schema description. Please provide sample schema (as in: create table ...), sample data, and expected output.
Best regards,
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