create or replace function strFormatDate(i_datestr in varchar2)
return date
is
begin
if i_datestr is null or trim(i_datestr) = '' then
return null;
end if;
return to_date(i_datestr,'yyyy-MM-dd');
end strFormatDate;
转载于:https://www.cnblogs.com/bilaisheng/p/10210984.html
