class ActiveRecord::Result

end
puts row + “ ” + row[‘body’]
result.each do |row|
# ActiveRecord::Result also includes Enumerable.
]
…
{“id” => 2, “title” => “title_2”, “body” => “body_2”},
# => [{“id” => 1, “title” => “title_1”, “body” => “body_1”},
result.to_hash
# Get an array of hashes representing the result (column => value):
]
…
[2, “title_2”, “body_2”],
# => [[1, “title_1”, “body_1”],
result.rows
# Get the record values of the result:
# => [“id”, “title”, “body”]
result.columns
# Get the column names of the result:
result # => #<ActiveRecord::Result:0xdeadbeef>
result = ActiveRecord::Base.connection.exec_query(‘SELECT id, title, body FROM posts’)
database connection adapter. For example:
This class encapsulates a Result returned from calling exec_query on any
##

def [](idx) 

def [](idx)
  hash_rows[idx]
end

def cast_values(type_overrides = {}) # :nodoc:

:nodoc: 
def cast_values(type_overrides = {}) # :nodoc:
  types = columns.map { |name| column_type(name, type_overrides) }
  result = rows.map do |values|
    types.zip(values).map { |type, value| type.type_cast_from_database(value) }
  end
  columns.one? ? result.map!(&:first) : result
end

def column_type(name, type_overrides = {}) 

def column_type(name, type_overrides = {})
  type_overrides.fetch(name) do
    column_types.fetch(name, IDENTITY_TYPE)
  end
end

def each 

def each
  if block_given?
    hash_rows.each { |row| yield row }
  else
    hash_rows.to_enum { @rows.size }
  end
end

def empty?

Returns true if there are no records. 
def empty?
  rows.empty?
end

def hash_rows 

def hash_rows
  @hash_rows ||=
    begin
      # We freeze the strings to prevent them getting duped when
      # used as keys in ActiveRecord::Base's @attributes hash
      columns = @columns.map { |c| c.dup.freeze }
      @rows.map { |row|
        # In the past we used Hash[columns.zip(row)]
        #  though elegant, the verbose way is much more efficient
        #  both time and memory wise cause it avoids a big array allocation
        #  this method is called a lot and needs to be micro optimised
        hash = {}
        index = 0
        length = columns.length
        while index < length
          hash[columns[index]] = row[index]
          index += 1
        end
        hash
      }
    end
end

def initialize(columns, rows, column_types = {}) 

def initialize(columns, rows, column_types = {})
  @columns      = columns
  @rows         = rows
  @hash_rows    = nil
  @column_types = column_types
end

def initialize_copy(other) 

def initialize_copy(other)
  @columns      = columns.dup
  @rows         = rows.dup
  @column_types = column_types.dup
  @hash_rows    = nil
end

def last 

def last
  hash_rows.last
end

def length 

def length
  @rows.length
end

def to_ary 

def to_ary
  hash_rows
end

def to_hash 

def to_hash
  hash_rows
end