oracle判断字符是否为字母
create or replace function ischar(chr varchar2) return varchar2 is
ischr varchar2(5);
begin
select case
when ascii(chr) between 65 and 122 THEN
'true'
else
'false'
end
into ischr
from dual;
return ischr;
end;
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oracle判断字符是否为字母 create or replace function ischar(chr varchar2) return varchar2 is ischr varchar2(5); begin select case when ascii(chr) between 65 and 122 THEN 'true' else 'false' end into ischr from dual; return ischr; en...
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