I have a ruby script which I run using the JRuby Interpreter. The script
connects to a Sybase database using DBI and Sybase JDBC (jTDS3.jar and
jconn3.jar)

My problem is that I have a select query that when I return the result I
change the column names. For example:

SELECT
t.TRANSACTION as 'business_transaction',
t.TRADE_CURRENCY as 'currency',
t.CURRENCY as 'settlement_currency'
...etc...

FROM
TRADE t
...etc...

My problem is when using the examples directly from the documentation
(http://www.kitebird.com/articles/ruby-dbi.html)

sth = dbh.execute(stmt)

printf "Number of rows: %d\n", rows.size
printf "Number of columns: %d\n", sth.column_names.size
sth.column_info.each_with_index do |info, i|
   printf "--- Column %d (%s) ---\n", i, info["name"]
end

or simply

sth = dbh.execute(stmt)

rows = sth.fetch_all
col_names = sth.column_names
sth.finish
DBI::Utils::TableFormatter.ascii(col_names, rows)

Not ALL the names come out as I set them using the 'as' clause in the
query. Some are the original field names and some are the names I have
specified.

For example they will list like:

--- Column 0 (TRANSACTION) ---
--- Column 1 (TRADE_CURRENCY) ---
--- Column 2 (settlement_currency) ---

or

TRANSACTION
TRADE_CURRENCY
settlement_currency

When testing this in Squirrel SQL Client the columns are correctly named
so is this a bug in DBI or the Sybase JDBC drivers? or am I doing
something wrong?

Any help would be greatly appreciated

I posted on:
http://stackoverflow.com/questions/1530329/jrruby-sybase-jdbc-and-dbi-fetching-column-name-with-the-as-clause-issue