From: Brian Candler <B.Candler@...>
Date: 2003-08-05T22:40:06+09:00
Subject: Problem with ruby-dbi-all-0.0.20 and/or ruby-1.8.0

The following test program works correctly with ruby-dbi-all-0.0.18 under
ruby-1.6.8, but not ruby-dbi-all-0.0.20 under ruby-1.8.0:

------------------------------------------------------------------
#!/usr/local/bin/ruby -w
require 'dbi'
LIMIT = 100

d = DBI.connect('dbi:Mysql:somedatabase','root','')

sql = "select col1,col2 from anytable"
rows = []
d.execute(sql) do |sth|
  loop do
    row = sth.fetch
    p row   # prints the right answer
    break if row.nil?
    rows << row.dup
    break if rows.size >= LIMIT
  end
end

p rows # prints the wrong answer
------------------------------------------------------------------

The problem is that the array 'rows' contains the last row repeated N times,
instead of N different rows. This is despite the use of 'row.dup'.
The object_id's of the elements of row are all different, but the contents
are the same.

I used mysql-ruby-2.4.4 in both cases.

Regards,

Brian.