Question

How can I update a table and create column with the id numbers for each entry in that ID column?

The table currently looks like:

    city    
-------------
  New York
  Los Angeles
  London
  Belgrade

I need the column in this table that would have the ID number of each city which would be ordered by column city ASC.

Something like:

 id   |   city
----------------
  1   | Belgrade
  2   | London
  3   | Los Angeles
  4   | New York

Can I do this using mysql query or I need to do that using PHP and Mysql?

Answer 1

ALTER TABLE table_name
ADD column_name column-definition;

so in your case its

 ALTER TABLE cities
 ADD id int auto-increment;