sql中参数过多利用变量替换参数的方法

2020-07-10 08:06:08易采站长站整理

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,’yyyyMMdd’)>=(to_date(20120801,’yyyyMMdd’)-10) and f_tradingdate<=20120801) and rownum<2),
null,’-‘,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,’yyyyMMdd’)>=(to_date(20120801,’yyyyMMdd’)-10) and f_tradingdate<=20120801) and rownum<2),’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,’yyyyMMdd’)>=(to_date(20120801,’yyyyMMdd’)-10) and f_tradingdate<=20120801) and rownum<2),
null,’-‘,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,’yyyyMMdd’)>=(to_date(20120801,’yyyyMMdd’)-10) and f_tradingdate<=20120801) and rownum<2),’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.fund5,b.fund4,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。

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