select
coalesce(bgl.relation::regclass::text, bgl.locktype) as locked_item,
now() - bda.query_start as waiting_duration,
bda.pid as blocked_pid,
bda.query as blocked_query,
bdl.mode as blocked_mode,
bga.pid as blocking_pid,
bga.query as blocking_query,
bgl.mode as blocking_mode
from pg_catalog.pg_locks bdl
join pg_stat_activity bda
on
bda.pid =
bdl.pid join pg_catalog.pg_locks bgl
on
bgl.pid !=
bdl.pid and (bgl.transactionid = bdl.transactionid
or bgl.relation = bdl.relation and bgl.locktype = bdl.locktype)
join pg_stat_activity bga
on
bga.pid =
bgl.pid and bga.datid = bda.datid
where not bdl.granted
and bga.datname = current_database();