Volkan YAZICI <volkan(dot)yazici(at)gmail(dot)com> writes:
> For the second mvcc.sgml edit, there's a huge difference between "two
> successive SELECT commands" and "two successive same SELECT commands".
Indeed, and I would argue that your proposed change is exactly wrong.
For instance,
SELECT * FROM foo WHERE col > 4;
SELECT * FROM foo WHERE col > 5;
Under READ COMMITTED, the second SELECT may retrieve rows not found by
the first, which would be impossible under SERIALIZABLE mode.
regards, tom lane