- my $sql_showTBL = "SELECT c.relname FROM pg_catalog.pg_class c \
- LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace \
- WHERE c.relkind IN ('r','') AND n.nspname NOT IN ('pg_catalog','pg_toast') and
- pg_catalog.pg_table_is_visible(c.oid)";