CREATE OR REPLACE FUNCTION FNCDVAL
(
xCdGrp in varchar2,
xCdKey in varchar2
)
return varchar2
as
nCdVal tb_gnr_cd.cd_val%type;
begin
select cd_val
into nCdVal
from tb_gnr_cd
where tb_gnr_cd.cd_id = xCdGrp || xCdKey
;
return nCdVal;
end;
这段代码中 “||” 的意思是什么？
------解决方案--------------------
连接符
SQL> select 'aa'||'bb' from dual;
'AA'
----
aabb