* Tom Lane: >> Do you mean that the ALTER query and subsequent queries are shown as >> "waiting" in pg_stat_activity? In this case, I'm also wondering why >> this is inecessary. > > ALTER ADD FOREIGN KEY must lock both tables to add triggers to them. But why is such a broad lock needed? If the table was created in the current transaction and is empty, the contents of the foreign key table should not matter. -- Florian Weimer <fweimer@xxxxxx> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
