Joe Conway <> writes:
> I am probably missing something obvious, but why does the
> AccessShareLock remain held on a table after a SELECT statement is
> complete when in a transaction block?

*Any* lock acquired by user command is held till end of transaction;
AccessShareLock isn't special.

In general, releasing early would increase the risk of undesirable
behaviors such as tables changing definition mid-transaction.

                        regards, tom lane

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