pg_class:oid与relname互查
SELECT oid FROM pg_class WHERE relname = 'mytable'
SELECT relname FROM pg_class WHERE oid in (16391,16394,16397);
获得其他属性:SELECT * FROM pg_attribute WHERE attrelid = 'mytable'::regclass;
RangeTblEntry 内的Oid relid; 有定义
RangeTblEntry 内的Oid relid; 有定义