pg_class:oid與relname互查
SELECT oid FROM pg_class WHERE relname = 'mytable'
SELECT relname FROM pg_class WHERE oid in (16391,16394,16397);
獲得其他屬性:SELECT * FROM pg_attribute WHERE attrelid = 'mytable'::regclass;
RangeTblEntry 內的Oid relid; 有定義
RangeTblEntry 內的Oid relid; 有定義