class Symbol

  1. lib/sequel/extensions/core_extensions.rb
Parent: core_extensions.rb

Sequel extends Symbol to add methods to implement the SQL DSL.

Methods

Public Instance

  1. identifier
  2. sql_function

Public Instance methods

identifier ()

Returns receiver wrapped in an Sequel::SQL::Identifier. Usually used to prevent splitting the symbol.

:a__b # SQL: "a"."b"
:a__b.identifier # SQL: "a__b"
[show source] 
# File lib/sequel/extensions/core_extensions.rb, line 215
def identifier
  Sequel::SQL::Identifier.new(self)
end
sql_function (*args)

Returns a Sequel::SQL::Function with this as the function name, and the given arguments. This is aliased as Symbol#[] if the RUBY_VERSION is less than 1.9.0. Ruby 1.9 defines Symbol#[], and Sequel doesn’t override methods defined by ruby itself.

:now.sql_function # SQL: now()
:sum.sql_function(:a) # SQL: sum(a)
:concat.sql_function(:a, :b) # SQL: concat(a, b)
[show source] 
# File lib/sequel/extensions/core_extensions.rb, line 227
def sql_function(*args)
  Sequel::SQL::Function.new(self, *args)
end