How about keeping a hidden field out in the table that has a trigger that,
when an insert or update is done, it takes the varchar value, goes thru some
magic, and converts it to the decimal equivalent. I mean, what if you have
mixed 1' 3 1/4 ". You would have to convert this to 15.25 then store it.
THEN do your ordering on this field.
Or, if you do have a function that can look at the value and convert it on
the fly, just order by that function acting upon the data field.
Such as Select * from test order by width_converter(width);
-----Original Message-----
Sent: Thursday, June 07, 2001 12:56 PM
To: Multiple recipients of list ORACLE-L
One of our developers was looking for solution for his problem ..
Any idea folks .. ??
He wants to sort his data asc or desc for a varchar column ..
1> create table test(width varchar2(20));
2>
insert into test values('5/8"');
insert into test values('4"');
insert into test values('3/4"');
insert into test values('2"');
insert into test values('1-1/2"');
insert into test values('1"');
3>
select width from test order by width DESC;
5/8"
3/4"
1"
1-1/2"
2"
4"
Cheers
RK
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