我的查询:SELECT*FROMprivatemessages69WHEREsender='19'ORrecipient='19'ORDERBYidDESC;我的表:CREATETABLE`privatemessages69`(`id`int(11)NOTNULLauto_increment,`recipient`int(11)NOTNULL,`sender`int(11)NOTNULL,`time`int(11)NOTNULL,`readstatus`int(11)NOTNULL,`message`varchar(255)NOTNULL,`messagetype`int(11)NOT