Bulk insert between tables in same database

Question

Fastest way to do insert in a table A with same structure of a table B:

INSERT INTO A
SELECT * FROM B

I can't rename table because in table A there are indexes that when query is executed it's impossible to know without read catalog and create a dynamic script to modify table B to be equal to table A. Also, on table A there are on it some views than it's difficult to delete.

I can't use COPY command to make a COPY TO and next a COPY FROM because database user haven't permission on file and directory.

Is there a way to do a COPY A FROM (SELECT * FROM B) ?

PostgreSQL version 9.2.

Answer 1

Your question states the correct answer:

INSERT INTO A
SELECT * FROM B;

That's all you need.

Now you can also do this if A doesn't exist yet:

CREATE TABLE A (LIKE B INCLUDING ALL);
INSERT INTO A SELECT * FROM B;