SQLServer中使用索引视图(物化视图)

--创建物化视图，每天晚上22:00:00自动更新
create materialized view VM_PSNPERSONINFO 
refresh force on demand start with sysdate next to_date( concat( to_char( sysdate+1,'dd-mm-yyyy'),' 22:00:00'),'dd-mm-yyyy hh24:mi:ss')
as
SELECT dt.personid, c.employeeid,d.unitcode,d.unitname,d.label,
       dt.unitid,dt.startdate,dt.enddate
  FROM (
         SELECT DISTINCT b.personnelid personid,SUBSTR (a.effectdate, 1, 10) startdate,
         MIN (CASE WHEN a.effectdate < b.effectdate THEN b.effectdate ELSE N'9999-99-99' END) AS enddate,
         MIN (a.adjustresult) unitid
         FROM psnadjust a LEFT JOIN psnadjust b
         ON a.personnelid = b.personnelid
         WHERE a.adjusttype = '2' AND b.adjusttype = '2'
         GROUP BY b.personnelid, a.effectdate
        ) dt
       INNER JOIN psnaccessioninfo c
           ON c.personid = dt.personid
       INNER JOIN orgstdstruct d
           ON d.unitid = dt.unitid
ORDER BY employeeid, unitcode, startdate;