Pavel Stehule <pavel.steh...@gmail.com> writes: > I tried to write a query that does lateral join between > information_schema.tables and pgstattuple function.
> select * from information_schema.tables, lateral(select * from > pgstattuple(table_name::name)) s where table_type = 'BASE TABLE'; > The query finished by strange error > postgres=# select * from information_schema.tables, lateral(select * from > pgstattuple(table_name::name)) s where table_type = 'BASE TABLE'; > ERROR: relation "sql_features" does not exist > When I set search_path to information_schema, then the query is running. > But there is not any reason why it should be necessary. Nope, this is classic user error, nothing else. "table_name::name" is entirely inadequate as a way to reference a table that isn't visible in your search path. You have to incorporate the schema name as well. Ideally you'd just pass the table OID to the OID-accepting version of pgstattuple(), but of course the information_schema schema views don't expose OIDs. So basically you need something like pgstattuple((quote_ident(table_schema)||'.'||quote_ident(table_name))::regclass) although perhaps format() could help a little here. regards, tom lane