relational database - PostgreSQL find locks including the table name -

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i'm trying take @ locks happening on specific tables in postgresql database.

i see there's table called pg_locks

select * pg_locks;

which seems give me bunch of columns possible find relation because see 1 of columns relation oid.

what table must link to relation name?

try :

select nspname,relname,l.* pg_locks l join pg_class c on   (relation=c.oid) join pg_namespace nsp on (c.relnamespace=nsp.oid)    pid in (select procpid pg_stat_activity    datname=current_database() , current_query!=current_query())

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