On 7 Aug 2003, Neil Zanella wrote: > of transactions as opposed to the operations taking place serially? Also, does > PostgreSQL fully support SQL99 CHECK constraints? And if the system crashes...
Technically no. Check constraints with subselects are not supported. Using a function gets you half the constraint, but doesn't notice modifications to the other table(s) involved. You might need triggers to handle that portion. ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
