Thanks Joerg. You are very correct. On Thu, Oct 1, 2009 at 2:40 PM, Joerg Bruehe <joerg.bru...@sun.com> wrote:
> Hi! > > > prabhat kumar wrote: > > You can use : > > > > *ALTER TABLE it ADD COLUMN title varchar(25), phone number integer (6);* > > > > it will add new column after last. > > > > but you can also specify the particular column after you want to add. > > > > like. > > > > *ALTER TABLE it ADD COLUMN title varchar(25), phone number integer (6) > AFTER > > pusername; * > > The syntax is correct, but one data type is wrong: > > A phone number is no numeric type, it is a string of (mostly) digits. > > Those who think there is no difference, they are wrong: > 1) In a phone number, you may need a leading zero. No numeric type > supports that, unless you try some formatting which would then affect > all values and not just selected ones. > 2) Just ask yourself whether it makes sense to compute the average phone > number (yes, the term is misleading). > > Similar reasoning applies to other digit strings, like article number, > ISBN (books), SSN (social security number), passport number, etc. > > > Jörg > > -- > Joerg Bruehe, MySQL Build Team, joerg.bru...@sun.com > Sun Microsystems GmbH, Komturstraße 18a, D-12099 Berlin > Geschaeftsfuehrer: Thomas Schroeder, Wolfgang Engels, Wolf Frenkel > Vorsitzender des Aufsichtsrates: Martin Haering Muenchen: HRB161028 > > -- Best Regards, Prabhat Kumar MySQL DBA Datavail-India Mumbai Mobile : 91-9987681929 www.datavail.com My Blog: http://adminlinux.blogspot.com My LinkedIn: http://www.linkedin.com/in/profileprabhat
