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PostgreSQL 10 Administration Cookbook - Fourth Edition
book

PostgreSQL 10 Administration Cookbook - Fourth Edition

by Simon Riggs, Gianni Ciolli
May 2018
Intermediate to advanced content levelIntermediate to advanced
576 pages
30h 25m
English
Packt Publishing
Content preview from PostgreSQL 10 Administration Cookbook - Fourth Edition

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Another-and sometimes easier-way of accessing other databases is with a tool named PL/Proxy, available as a PostgreSQL extension. PL/Proxy allows you to create a local database function that is a proxy for a remote database function. PL/Proxy works only for functions, and some people regard this as a restriction, in a way similar to postgres_fdw, which operates only on rows in tables. That is why these solutions complement dblink, rather than replacing it.

Creating a local proxy function is simple:

CREATE FUNCTION my_task(VOID)RETURNS SETOF text AS $$      CONNECT 'dbname=myremoteserver';      SELECT my_task();$$ LANGUAGE plproxy;

You need a local function, but you don't need to call a remote function; you can use SQL statements directly. ...

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Publisher Resources

ISBN: 9781788474924Supplemental Content