You could do something like (don't copy and paste, this is just for you
to have an ideia - i didn't understand your calculations with 0.063 and
others...):
SELECT IF (metric="cm", expression_in_centimeters, expression_in_inches)
, ...other_fields....
FROM ...
where "metric" is the name of the table field which can have values "cm"
or "inches" (could be a ENUM, for example).
On Mon, 2004-01-12 at 13:20, Richard Davies wrote:
> I recieve measurements for a product sometimes in inches, sometimes in
> centimeters.
>
> These are stored in table1
> int not null primary key, measurement1 int, measurement2 int, type
> varchar(255)
>
> I need to extract data from this table and store it in another table with all
> measurements converted to inches.
>
> insert into table2 select from table1 no, measurement1+0.625,
> measurement2+0.063, 'Style';
>
> Would it be possible to have a field in table1 that indicates centimeters or
> inches and modify the insert statement to check this field and divide
> everything by 2.54 before adding and inserting? If this is possible how would
> I do it I can't quite make it work.
>
> --
> Regards
>
> Richard
