加入收藏 | 设为首页 | 会员中心 | 我要投稿 李大同 (https://www.lidatong.com.cn/)- 科技、建站、经验、云计算、5G、大数据,站长网!
当前位置: 首页 > 站长学院 > MsSql教程 > 正文

sql中参数过多利用变量替换参数的方法

发布时间:2020-12-12 09:24:32 所属栏目:MsSql教程 来源:网络整理
导读:工作中遇到一个需求,需要非常多的参数,例如如下sql, div class="codetitle" a style="CURSOR: pointer" data="42892" class="copybut" id="copybut42892" onclick="doCopy('code42892')" 代码如下:div class="codebody" id="code42892" select ff.fundsc|

工作中遇到一个需求,需要非常多的参数,例如如下sql,
<div class="codetitle"><a style="CURSOR: pointer" data="42892" class="copybut" id="copybut42892" onclick="doCopy('code42892')"> 代码如下:<div class="codebody" id="code42892">
select
ff.fundsc||'-'||ff.fundtzfs||'-'||ff.fundcjfl||'-'||ff.fundonefl||'-'||ff.fundtowfl catagory,
sf.scode,replace(sf.fund5,'型证券投资基金','')fund5,sf.fund4,sf.fund10,
(select to_date(tradedate,'yyyy-MM-dd') from sdc_fundnetassetvalue where scode=sf.scode and tradedate in
(select max(tradedate) from sdc_fundnetassetvalue where scode=sf.scode and to_date(tradedate,'yyyyMMdd')>=(to_date(20120801,'yyyyMMdd')-10) and tradedate<=20120801) and rownum<2) trdatedate,
(select unitvalue from sdc_fundnetassetvalue where scode=sf.scode and tradedate in
(select max(tradedate) from sdc_fundnetassetvalue where scode=sf.scode and to_date(tradedate,'yyyyMMdd')-10) and tradedate<=20120801) and rownum<2) fejz,
(select accumulatedunitvalue from sdc_fundnetassetvalue where scode=sf.scode and tradedate in
(select max(tradedate) from sdc_fundnetassetvalue where scode=sf.scode and to_date(tradedate,'yyyyMMdd')-10) and tradedate<=20120801) and rownum<2) feljjz,
(select f30004_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'yyyyMMdd')-10) and f_tradingdate<=20120801) and rownum<2) gqyzjzzzl,
(select f30006_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'yyyyMMdd')-10) and f_tradingdate<=20120801) and rownum<2) gqyyjzzzl,
decode((select f30007_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'yyyyMMdd')-10) and f_tradingdate<=20120801) and rownum<2),
null,'-',to_char((select f30007_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) gqsgyjzzzl,
row_number() over(partition by ff.fundsc||'-'||ff.fundtzfs||'-'||ff.fundcjfl||'-'||ff.fundonefl||'-'||ff.fundtowfl
order by decode((select f30007_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) desc) sgy,
decode((select f30008_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,to_char((select f30008_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) gqbnjzzzl,
row_number() over(partition by ff.fundsc||'-'||ff.fundtzfs||'-'||ff.fundcjfl||'-'||ff.fundonefl||'-'||ff.fundtowfl
order by decode((select f30008_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) desc) bn,
decode((select F30017_30003 from si_fund_30003 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30003 where f_fundcode=sf.scode and to_date(f_tradingdate,to_char((select F30017_30003 from si_fund_30003 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30003 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) jinnian,
row_number() over(partition by ff.fundsc||'-'||ff.fundtzfs||'-'||ff.fundcjfl||'-'||ff.fundonefl||'-'||ff.fundtowfl
order by decode((select F30017_30003 from si_fund_30003 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30003 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) desc) jn,
decode((select f30009_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,to_char((select f30009_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) gqynjzzzl,
row_number() over(partition by ff.fundsc||'-'||ff.fundtzfs||'-'||ff.fundcjfl||'-'||ff.fundonefl||'-'||ff.fundtowfl
order by decode((select f30009_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) desc) gqyn,
decode((select f30010_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,to_char((select f30010_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) gqlnjzzzl,
row_number() over(partition by ff.fundsc||'-'||ff.fundtzfs||'-'||ff.fundcjfl||'-'||ff.fundonefl||'-'||ff.fundtowfl
order by decode((select f30010_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) desc) gqln,
decode((select f30011_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,to_char((select f30011_30002 from si_fund_30002 where f_fundcode=sf.scode and f_type=0 and f_tradingdate in
(select max(f_tradingdate) from si_fund_30002 where f_fundcode=sf.scode and to_date(f_tradingdate,'fm999999990.9999')) gqsnjzzzl from
(select
b.scode,b.fund5,b.fund4,b.fund10
from
sdc_fundbase b left join sdc_security a on b.scode=a.scode and b.mktcode=a.mktcode and b.fund49=a.stype
where
b.scode in (select t.fundcode from fund_fundcategoryone t where (t.fundtzfs='开放式' or t.fundtzfs='封闭式') and t.fundonefl!='货币市场基金' and t.fundonefl!='交易类' )
and (a.enddate>=to_date(20120801,'yyyy-MM-dd') or a.enddate is null or a.enddate=to_date(19000101,'yyyy-MM-dd'))
and a.stype in (6,7) order by scode
) sf
left join fund_fundcategoryone ff on sf.scode = ff.fundcode and ff.fundonefl!='交易类'

非常复杂,不仔细介绍,此时需要将20120801处全部变成参数传入,,只写参数就得累死我,下面方法可以节省我的好多工作量,在最内部函数中修改select
b.scode,b.fund10,20120801 tdate
from
将20120801用tdate变量来代替,这样传入的参数就用tdate来表示就可以了。

(编辑:李大同)

【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容!

    推荐文章
      热点阅读