On Thu, 2005-09-08 at 14:12 -0700, Robert Simpson wrote: > If SUM returns 0 when no rows were evaluated, then SQLite is making an > assumption about what the answer should be, which is incorrect. > > SELECT SUM(temperature) FROM antartica WHERE temperature < -150 LIMIT 1 > > Does it makes sense for that query to return 0 if no rows matched the > criteria?
Temperature is an intensive property, not an extensive property, and is therefore not additive. SUM(temperature) not a sensible thing to do. The correct query should omit the SUM like this: SELECT temperature FROM antartica WHERE temperature < -150 LIMIT 1 Which gives the result you seek. Thank you for the suggestion, though... -- D. Richard Hipp <[EMAIL PROTECTED]>
