//显示系统最近30天的记录 where "SB_DATE" BETWEEN TO_DATE ( TO_CHAR ( SYSDATE - 30, 'mm-dd-yyyy' ) || '00:00:01', 'mm-dd-yyyy hh24:mi:ss' ) AND TO_DATE ( TO_CHAR ( SYSDATE - 1, 'mm-dd-yyyy' ) || '23:59:59', 'mm-dd-yyyy hh24:mi:ss' ) //显示这个月的记录 where to_char("SENT_BOUNCE_BACK_OVDWELCOME"."SB_DATE", 'mm')=to_char(sysdate,'mm')