Scavenging the mail folder uncovered Randall F. Kern's letter:
> Read committed is faster, but I have not done any tests to know how much
> faster. Read committed mode doesn't support concurrent updates either,
> but fails silently. In other words, given to concurrent queries:
>
> update foo se
Read committed is faster, but I have not done any tests to know how much
faster. Read committed mode doesn't support concurrent updates either,
but fails silently. In other words, given to concurrent queries:
update foo set a = a + 1
update foo set a = a + 2
Assuming these overlap, and a start
Scavenging the mail folder uncovered Randall F. Kern's letter:
[snip]
> Concurrent updates are not supported in the serializable transaction
> mode; if one transaction tries to update (or delete) a row that has
> already been updated by a concurrent uncommitted transaction, the second
> transacti
