Hi folks, I've got an accounts table and a transactions table and want to do a summary join. If I do:
bank=# select aid, aname, aodraft from accounts a bank-# left outer join (select account, sum(amount) as balance bank(# from statement group by account) as s bank-# on s.account = a.aid; I get the results I want, but I need to rename the aid column to 'key' so that I can feed it into a standard routine I have in PHP to build a hash. If I do: bank=# select aid as key, aname, aodraft from accounts a bank-# left outer join (select account, sum(amount) as balance bank(# from statement group by account) as s bank-# on s.account = a.key; I get ERROR: No such attribute or function 'key' Any ideas why? Also, I'm sure I can do this more efficiently as a single select/join, but can't seem to work out why (Friday morning syndrome). Anyone give me a clue? -- Gary Stainburn This email does not contain private or confidential material as it may be snooped on by interested government parties for unknown and undisclosed purposes - Regulation of Investigatory Powers Act, 2000 ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html