PostgreSQL function for last inserted ID

Question

In PostgreSQL, how do I get the last id inserted into a table?

In MS SQL there is SCOPE_IDENTITY().

Please do not advise me to use something like this:

Answer 1

Try this:

select nextval('my_seq_name');  // Returns next value

If this return 1 (or whatever is the start_value for your sequence), then reset the sequence back to the original value, passing the false flag:

select setval('my_seq_name', 1, false);

Otherwise,

select setval('my_seq_name', nextValue - 1, true);

This will restore the sequence value to the original state and "setval" will return with the sequence value you are looking for.