> 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

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