管理指南系统表information_schemaengines本页总览engines概述此表仅用于兼容 MySQL 行为。永远为空。所属数据库information_schema表信息列名类型说明ENGINEvarchar(64)SUPPORTvarchar(8)COMMENTvarchar(80)TRANSACTIONSvarchar(3)XAvarchar(3)SAVEPOINTSvarchar(3)