class Sequel::SQL::Subscript

Represents an SQL array access, with multiple possible arguments.

Attributes

expression[R]

The SQL array column

f[R]

The SQL array column

sub[R]

The array of subscripts to use (should be an array of numbers)

Public Class Methods

new(expression, sub) click to toggle source

Set the array column and subscripts to the given arguments

     # File lib/sequel/sql.rb
1743 def initialize(expression, sub)
1744   @expression = expression
1745   @sub = sub
1746   freeze
1747 end

Public Instance Methods

[](sub) click to toggle source

Create a new Subscript by accessing a subarray of a multidimensional array.

Sequel[:a].sql_subscript(2) # a[2]
Sequel[:a].sql_subscript(2)[1] # a[2][1]
     # File lib/sequel/sql.rb
1763 def [](sub)
1764   Subscript.new(self, Array(sub))
1765 end
|(sub) click to toggle source

Create a new Subscript appending the given subscript(s) to the current array of subscripts.

Sequel[:a].sql_subscript(2) # a[2]
Sequel[:a].sql_subscript(2) | 1 # a[2, 1]
     # File lib/sequel/sql.rb
1754 def |(sub)
1755   Subscript.new(@expression, @sub + Array(sub))
1756 end