In a BEFORE INSERT trigger, depending on input values, I need to lock a table and do a few selects. Of course, the "lock table" isn't much use if not currently in a transaction. So my question is this: can I tell if I'm inside a transaction or not and issue a BEGIN if not. And then also set a flag so that after the INSERT I can detect that I issued a BEGIN and do a COMMIT? Or, maybe better is to just throw an exception if not already inside a transaction. BTW -- it seems odd to me that you can issue a lock table outside of an explicit begin/commit and not get a warning. When would issuing a lock table outside an explicit transaction be of any use? -- Bill Moseley moseley@xxxxxxxx
