Oracle动态SQL语句

动态SQL返回游标：

create or replace procedure proc_ValidityDueQuery(
     p_regioncode in number,    
     p_pscode in number,        
     p_outputcode in number,    
     p_pollutantType in number, 
     p_psclasscode in varchar2,   
     p_attencode in varchar2,     
     p_checkstatus in number,   
     p_auditstatus in number,   
     p_cursor out curdata
  )
  as
  begin
     open p_cursor for 
     'select bs.regioncode,
             bs.regionname,
             bs.pscode,
             bs.psname,
             bs.outputcode,
             bs.outputname,
             bs.ptype,
             bd.chkname,
             bd.approvename, 
             bd.pollutantname,
             case when ((bd.maxvalidtill - sysdate) > 0 and (bd.maxvalidtill - sysdate) <= 7) then ''yellow''
                  when (sysdate - bd.maxvalidtill) > 0 then ''red''
             end color,
             case when bs.ptype = 1 then ''水'' when bs.ptype = 2 then ''气'' end pstype,
             bd.auddate,
             to_char(bd.maxvalidtill, ''yyyy-MM-dd HH24:mi'') validtill
        from (select vb.regioncode,
                     vb.regionname,
                     vb.pscode,
                     vb.psname,
                     vo.outputcode,
                     vo.outputname,
                     vo.ptype
                from (select oregioncode regioncode, oregionname regionname, pscode, psname
                        from v_baseinfo
                       where 1 = 1
                         '|| case when p_regioncode >0 then 'and oregioncode='|| p_regioncode else '' end ||'
                         '|| case when p_pscode>0 then 'and pscode='|| p_pscode else '' end ||'
                         '|| case when p_psclasscode<>'0' then 'and psclasscodexc in ('|| p_psclasscode ||')' else '' end ||'
                         '|| case when p_attencode<>'0' then 'and attentiondegreecode in ('|| p_attencode ||')' else '' end ||' 
                     ) vb,
                     (select pscode, outputcode, outputname, inout, psstatus, ptstatus, ptype
                        from v_output t
                       where psstatus = 0
                         and ismonitor = 1
                         and ptstatus = 0
                         '|| case when p_pscode>0 then 'and pscode='|| p_pscode else '' end ||'
                         '|| case when p_outputcode>0 then 'and outputcode='|| p_outputcode else '' end ||' 
                         '|| case when p_checkstatus=1 then 'and isgjkh=1 or isskkh=1'
                                  when p_checkstatus=0 then 'and isgjkh=0 or isskkh=0'
                                  else ''
                             end || ' 
                         and ptype ='|| p_pollutantType ||'
                         '|| case when p_psclasscode<>'0' then 'and psclasscodexc in ('|| p_psclasscode ||')' else '' end ||'
                         '|| case when p_attencode<>'0' then 'and attentiondegreecode in ('|| p_attencode ||')' else '' end ||'
                     ) vo
               where vb.pscode = vo.pscode) bs,
        (select pscode, outputcode, pollutantname, pollutantcode, 
                auddate,maxvalidtill, approvename, chkname
           from v_scenecommonite
          where checkresult=''1''
            '|| case when p_pscode>0 then 'and pscode='|| p_pscode else '' end ||'
            '|| case when p_outputcode>0 then 'and outputcode='|| p_outputcode else '' end ||' 
            '|| case when p_auditstatus=1 then 'and ((maxvalidtill - sysdate) > 0 and (maxvalidtill - sysdate) <= 7)' 
                     when p_auditstatus=2 then 'and maxvalidtill >= sysdate-90'
                     when p_auditstatus=3 then 'and sysdate>maxvalidtill'
                     else ''
                end ||' 
        ) bd 
       Where bs.pscode=bd.pscode
         and bs.outputcode=bd.outputcode 
       order by bd.maxvalidtill desc, bs.regioncode, bs.pscode, bs.outputcode';
   end proc_ValidityDueQuery; 

2.动态创建暂时表

--创建暂时表
--推断是否存在
select count(*)
  into v_num
  from user_tables
 where table_name=upper('zstemptable');
--假设不存在则创建
if v_num=0 then 
   execute immediate 'create global temporary table zstemptable(id number(1),reviseddata number(20,6))
          on commit preserve rows';
end if;
--插入数据    
execute immediate 'insert into zstemptable
    select 1,RevisedStrength
      from (select RevisedStrength
              from t_mod_gasfachourdata
             where pscode = '|| p_pscode ||'
               and outputcode = '|| p_outputcode ||'
               and pollutantCode = '''|| p_pollutantcode ||'''
               and monitorTime < to_date('''|| p_recordTime ||''',''yyyy-MM-dd HH24:mi:ss'')
               and availableStatus = 0
             order by MonitorTime desc)
     where rownum = 1'; 
--查询数据       
execute immediate 'select count(*) from zstemptable where id=1' into v_hisstrength; 
--清除表信息
execute immediate 'truncate table zstemptable';