Some things to consider for query optimization \d - show columns, data types, and other table.\dtE - list both local and foreign tables.Provide information related to foreign data wrappers: This means that the local serverĭoesn't know anything about statistics from the external server (we'll look at Tables don't actually store data locally. LEFT JOIN payment_methods pm ON acct.id = pm.acct_idĮven though I've recreated up the foreign schema on the local server, these LEFT JOIN accounts acct ON c.id = ntact_id Test=# IMPORT FOREIGN SCHEMA public LIMIT TO (payment_methods, accounts)įROM SERVER salesinfo_bridge INTO public Īnd I can carry on querying as if these tables were all on the same database! test=# SELECT c.id, pm.type, acct.balance You even have the option to include/exclude specific tables only, Run IMPORT FOREIGN SCHEMA, which imports tables and views from a schema,Īnd creates foreign tables that match the definitions for the external.You have to define column names, data types, constraints etc. Run CREATE FOREIGN TABLE, which is pretty similar to CREATE TABLE in that. Then I can set up foreign tables that correspond to the tables I want to OPTIONS (user 'fdw_user', password 'password') OPTIONS (host 'p.2gdmzr2pcbadzcstrkuolxvtpq.db.', dbname 'sales') Postgres contrib, and you do need CREATE privileges on the local database):
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