Hi, we need to process user-defined integrity conditions, which are stored as strings at application level, e. g. "person.age - 2 > 18". We would like to substitute the variable names within these expressions by their values at trigger time. So we have expressions containing constants only, e. g. "29 - 2 > 18". We are glad to have found out that we can evaluate such expressions simply by calling them with SELECT, e. g. "SELECT 29 - 2 > 18" returns true. We think that it would be very nice to benefit from the pg database system parser. But can we rely on this functionality in the future? Is this standard SQL?
Thank you, Markus ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
