Seems like I will have to use a temporary table for this purpose. But if there is another way, I would be interested in knowing it.
Josef > Hi! > > Is there a simple way to get an aggregation of some query as well as the > individual rows from within a PSQL? I.e., I have a stored procedure > GEN_DATA which produces individual rows (ID, Name, DateAndTime, Value). > I am processing the output of GEN_DATA in another stored procedure > PROCESS_DATA: > > FOR SELECT id, name, dateandtime, value > FROM gen_data(...) > INTO ... > DO ... > > Within this loop, I need the individual records, but I also need some > aggregations on them, i.e. MIN(dateandtime) or SUM(value). If I could > run GEN_DATA twice, then it would be easy (in the first run I would > calculate the aggregations, in the second run the individual values), > but I can't. If I could perform the processing in my application (rather > than the stored procedure), it would be easy, too (I would simply > traverse the result dataset of GEN_DATA twice), but again I can't do > that. Would Common Table Expressions or perhaps Derived Tables help me? > > Thanks, > > Josef ------------------------------------ ------------------------------------ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Visit http://www.firebirdsql.org and click the Documentation item on the main (top) menu. Try FAQ and other links from the left-side menu there. Also search the knowledgebases at http://www.ibphoenix.com/resources/documents/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/firebird-support/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/firebird-support/join (Yahoo! ID required) <*> To change settings via email: firebird-support-dig...@yahoogroups.com firebird-support-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: firebird-support-unsubscr...@yahoogroups.com <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/
