Active Record Result

This class encapsulates a result returned from calling {#exec_query}[rdoc-ref:ConnectionAdapters::DatabaseStatements#exec_query] on any database connection adapter. For example:

result = ActiveRecord::Base.lease_connection.exec_query('SELECT id, title, body FROM posts')
result # => #<ActiveRecord::Result:0xdeadbeef>

# Get the column names of the result:
result.columns
# => ["id", "title", "body"]

# Get the record values of the result:
result.rows
# => [[1, "title_1", "body_1"],
      [2, "title_2", "body_2"],
      ...
     ]

# Get an array of hashes representing the result (column => value):
result.to_a
# => [{"id" => 1, "title" => "title_1", "body" => "body_1"},
      {"id" => 2, "title" => "title_2", "body" => "body_2"},
      ...
     ]

# Get the number of rows affected by the query:
result = ActiveRecord::Base.lease_connection.exec_query('INSERT INTO posts (title, body) VALUES ("title_3", "body_3"), ("title_4", "body_4")')
result.affected_rows
# => 2

# ActiveRecord::Result also includes Enumerable.
result.each do |row|
  puts row['title'] + " " + row['body']
end