Using Sybase ASE 12.5.4 with jTDS Drivers with JRuby

Question

Problem

I am trying to create a small ruby ​​script - which will be run using jruby once a day - to connect to the Sybase ASE 12.5.4 database and execute a complex query.

Ultimately, I intend to do some data processing and insert new data into the MySQL table for use in the rails application.

Environment

• jruby v1.4.0
• java v1.6.0_15
• on Ubuntu Karmic

JRuby Mounted Gemstones

• activerecord-jdbc-adapter (0.9.1)
• ActiveRecord-2.3.4

Jruby Lib Catalog

• jtds-1.2.5

Query

SET rowcount 10 
SELECT * FROM TEST_TABLE

Code snippet

require 'java'
require 'jtds-1.2.5.jar'
require 'rubygems'
require 'active_record'

config = {
    :username => 'railstest',
    :password => 'railstest',
    :adapter  => 'jdbc',
    :dialect  => 'sybase',
    :host     => 'localhost',
    :database => 'railstest',
    :port     => '5000',
    :driver   => 'net.sourceforge.jtds.jdbc.Driver',
    :url      => 'jdbc:jtds:sybase://localhost:5000/railstest'
}
ActiveRecord::Base.establish_connection(config).connection.execute(-- QUERY --)

I can confirm that this is a database connection. Although I am having problems just picking 10 rows from the database table.

Gives out

To execute the method :

/usr/local/bin/jruby-1.4.0/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract_adapter.rb:219:in `log': ActiveRecord::ActiveRecordError: The executeUpdate method must not return a result set.: SET rowcount 10 SELECT * FROM TEST_TABLE  (ActiveRecord::StatementInvalid)
        from /usr/local/bin/jruby-1.4.0/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.2/lib/active_record/connection_adapters/jdbc_adapter.rb:559:in `execute'
        from db-test.rb:21

select_rows:

/usr/local/bin/jruby-1.4.0/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract_adapter.rb:219:in `log': ActiveRecord::ActiveRecordError: The executeUpdate method must not return a result set.: SET rowcount 10 SELECT * FROM TEST_TABLE (ActiveRecord::StatementInvalid)
        from /usr/local/bin/jruby-1.4.0/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.2/lib/active_record/connection_adapters/jdbc_adapter.rb:559:in `execute'
        from /usr/local/bin/jruby-1.4.0/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.2/lib/active_record/connection_adapters/jdbc_adapter.rb:629:in `select'
        from /usr/local/bin/jruby-1.4.0/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.2/lib/active_record/connection_adapters/jdbc_adapter.rb:550:in `select_rows'
        from db-test.rb:21

, , , , execute, select_rows .. .

, . , , , . Squirrel SQL, . DBI, , -, ?

- ? jTDS? .

Answer 1

Sybase - , @lollipopman, , , , .

jTDS

require java
require jtds-1.2.5.jar
require rubygems
require dbi

dbh = DBI.connect('dbi:Jdbc:jtds:sybase://<host>:<port>/<db>', <username>, <password>, {'driver' => 'net.sourceforge.jtds.jdbc.Driver'} )

, Sybase JRuby DBI

, -!

Answer 2

, , jruby, sybase jdbc dbi:

require 'java'
require './jars/jTDS3.jar'
require './jars/jconn3.jar'
require "rubygems"
require "dbi"

dbh = DBI.connect('dbi:Jdbc:sybase:Tds:foobar:2460/testdb', 'sa', 'password',
  {'driver' => 'com.sybase.jdbc3.jdbc.SybDriver'} )

Answer 3

: "set rowcount" "select". - , "0 " ​​... , . .