oracle sql 查出根据节假日表中日期的前后一段时间的负荷数据

--负荷

select t.netid,t.ymd,t.dmaxload,t.dminload,t.denergy from lf_stat_dloadcharact t where t.netid='00' order by t.ymd;

--假期

select h.year, h.ymd,h.daytypeid ,h.rowid from ST_HIS_HOLIDAY h;

select t.*, t.rowid from ST_FACTOR_DAYTYPE t

--某一天的前后日期

select t.netid,t.ymd,t.dmaxload,t.dminload,t.denergy

from lf_stat_dloadcharact t where t.netid='00'

and floor(to_date(t.ymd,'yyyymmdd')-to_date('20100405','yyyymmdd'))<10

and floor(to_date('20100405','yyyymmdd')-to_date(ymd,'yyyymmdd'))<=20;

--floor(to_date(t.ymd,'yyyymmdd')-to_date('20100405','yyyymmdd'))<10

--查出所需的所有日期

select h.year,h.daytypeid, h.ymd

,to_date(h.ymd,'yyyymmdd') - interval '20' day starttime

,to_date(h.ymd,'yyyymmdd') + interval '10' day endtime

from ST_HIS_HOLIDAY h;

--select sysdate,sysdate - interval '7' day from dual;

--合并

select t.netid,t.ymd,t.dmaxload,t.dminload,t.denergy,h.year h_y,h.daytypeid h_t, h.ymd h_h,tp.daytypename h_name

from lf_stat_dloadcharact t ,

(select year,daytypeid, ymd

,to_char(to_date(ymd,'yyyymmdd') - interval '20' day ,'yyyymmdd') starttime

,to_char(to_date(ymd,'yyyymmdd') + interval '10' day ,'yyyymmdd') endtime

from ST_HIS_HOLIDAY ) h,ST_FACTOR_DAYTYPE tp where t.netid='00'

and t.ymd>=h.starttime and t.ymd<=h.endtime and h.daytypeid=tp.daytypeid

order by t.ymd,tp.daytypeid