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POJRruby, Sybase JDBC and DBI - fetching column name with the AS clause issue
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  1. POJRruby, Sybase JDBC and DBI - fetching column name with the AS clause issue
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    copied!<p>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)</p> <p>My problem is that I have a select query that alters the column names of table. For example:</p> <pre><code>SELECT t.TRANSACTION as 'business_transaction', t.TRADE_CURRENCY as 'currency', t.CURRENCY as 'settlement_currency' ...etc... FROM TRADE t ...etc... </code></pre> <p>My problem is when using the examples directly from the <a href="http://www.kitebird.com/articles/ruby-dbi.html" rel="nofollow noreferrer">documentation</a> </p> <pre><code>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 </code></pre> <p>or simply</p> <pre><code>sth = dbh.execute(stmt) rows = sth.fetch_all col_names = sth.column_names sth.finish DBI::Utils::TableFormatter.ascii(col_names, rows) </code></pre> <p>Not <strong>ALL</strong> 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.</p> <p>For example they will list like:</p> <pre><code>--- Column 0 (TRANSACTION) --- --- Column 1 (TRADE_CURRENCY) --- --- Column 2 (settlement_currency) --- </code></pre> <p>or </p> <pre><code>TRANSACTION TRADE_CURRENCY settlement_currency </code></pre> <p>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?</p> <p>Any help would be greatly appreciated </p>
 

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