Using sequences is clever if you always increment a sequence for every insert, but again my analysis says that unless your table clearing is much slower than mi

Using sequences is clever if you always increment a sequence for every insert, but again my analysis says that unless your table clearing is much slower than mine it's hardly worth it to check, in fact checking the value of every sequence can't take much less than 5ms which is how long it takes to clear every table if empty but is less general.