--oracle函数如下：
CREATE OR REPLACE FUNCTION PJ_GDJHSSL_SCORE (mXZQDM VARCHAR2,mNF number)
RETURN int IS
vSCORE int;
BEGIN
select
case
when jh_ssl>=0.8 and jh_ssl<1.2 then 8
when (jh_ssl>=0.75 and jh_ssl<0.8) or (jh_ssl>=1.2 and jh_ssl<1.25) then 7
when (jh_ssl>=0.7 and jh_ssl<0.75) or (jh_ssl>=1.25 and jh_ssl<1.3) then 6
when (jh_ssl>=0.65 and jh_ssl<0.7) or (jh_ssl>=1.3 and jh_ssl<1.35) then 5
when (jh_ssl>=0.6 and jh_ssl<0.65) or (jh_ssl>=1.35 and jh_ssl<1.4) then 4
when (jh_ssl>=0.55 and jh_ssl<0.6) or (jh_ssl>=1.4 and jh_ssl<1.45) then 3
when (jh_ssl>=0.5 and jh_ssl<0.55) or (jh_ssl>=1.45 and jh_ssl<1.5) then 2
when (jh_ssl>=0.45 and jh_ssl<0.5) or (jh_ssl>=1.5 and jh_ssl<1.55) then 1
else 0
end as fz into vSCORE
from t_pj_gdjhssl where XZQ_DM=mXZQDM AND nf=mNF;
RETURN vSCORE;
END PJ_GDJHSSL_SCORE;
--在SQL语句中使用上面定义的函数。
select PJ_GDJHSSL_SCORE('4406',2012) from t_pj_gdjhssl where xzq_dm='4406' and nf=2012;
查询的记录中jh_ssl=0.8772，按常理说得出来的结果应该是8，但是执行的结果为空。
------解决方案--------------------
我试下来是返回8的。
- SQL code
tony@ORCL1> create table t_pj_gdjhssl(xzq_dm varchar2(100), nf int, jh_ssl int);Table created.tony@ORCL1> insert into t_pj_gdjhssl values('4406', 2012, 0.8772);1 row created.tony@ORCL1> commit;Commit complete.tony@ORCL1> CREATE OR REPLACE FUNCTION PJ_GDJHSSL_SCORE (mXZQDM VARCHAR2,mNF number) 2 RETURN int IS 3 vSCORE int; 4 BEGIN 5 select 6 case 7 when jh_ssl>=0.8 and jh_ssl<1.2 then 8 8 when (jh_ssl>=0.75 and jh_ssl<0.8) or (jh_ssl>=1.2 and jh_ssl<1.25) then 7 9 when (jh_ssl>=0.7 and jh_ssl<0.75) or (jh_ssl>=1.25 and jh_ssl<1.3) then 6 10 when (jh_ssl>=0.65 and jh_ssl<0.7) or (jh_ssl>=1.3 and jh_ssl<1.35) then 5 11 when (jh_ssl>=0.6 and jh_ssl<0.65) or (jh_ssl>=1.35 and jh_ssl<1.4) then 4 12 when (jh_ssl>=0.55 and jh_ssl<0.6) or (jh_ssl>=1.4 and jh_ssl<1.45) then 3 13 when (jh_ssl>=0.5 and jh_ssl<0.55) or (jh_ssl>=1.45 and jh_ssl<1.5) then 2 14 when (jh_ssl>=0.45 and jh_ssl<0.5) or (jh_ssl>=1.5 and jh_ssl<1.55) then 1 15 else 0 16 end as fz into vSCORE 17 from t_pj_gdjhssl where XZQ_DM=mXZQDM AND nf=mNF; 18 RETURN vSCORE; 19 END PJ_GDJHSSL_SCORE; 20 /Function created.tony@ORCL1> select PJ_GDJHSSL_SCORE('4406',2012) from t_pj_gdjhssl where xzq_dm='4406' and nf=2012;PJ_GDJHSSL_SCORE('4406',2012)----------------------------- 8tony@ORCL1>