Class: Sequel::SQL::Window

Inherits:

Expression

• Object
• Expression
• Sequel::SQL::Window

Defined in:

lib/sequel/sql.rb

Overview

A window is part of a window function specifying the window over which the function operates. It is separated from the WindowFunction class because it also can be used separately on some databases.

Instance Attribute Summary

• #opts ⇒ Object readonly

  The options for this window.

Instance Method Summary

• #initialize(opts = {}) ⇒ Window constructor

  Set the options to the options given.

Methods inherited from Expression

#==, attr_reader, comparison_attrs, #eql?, #hash, #lit, #sql_literal

Constructor Details

#initialize(opts = {}) ⇒ Window

Set the options to the options given

# File 'lib/sequel/sql.rb', line 980

def initialize(opts={})
  @opts = opts
end

Instance Attribute Details

#opts ⇒ Object (readonly)

The options for this window. Options currently used are:

• :frame - if specified, should be :all or :rows. :all always operates over all rows in the partition, while :rows excludes the current row’s later peers. The default is to include all previous rows in the partition up to the current row’s last peer.

• :order - order on the column(s) given

• :partition - partition/group on the column(s) given

• :window - base results on a previously specified named window

# File 'lib/sequel/sql.rb', line 977

def opts
  @opts
end