set transaction question

Inside a transaction,

I insert a row into the table, with an autonumber id.
Now I want to return the id of the newly inserted row. How can I do
that?

It seems that the first insert statement is not committed, and so the
second statement couldn't return the newly id.

SELECT currval('table_field_seq'); should work fine from inside a
transaction. The reason is that it retrieves the last value of the sequence
that was used by that backend, *not* the last value inserted into the table.
Therefore, it doesn't matter whether that value was committed or not.

Greg