This module includes the + method. It is included in StringExpression and can be included elsewhere to allow the use of the + operator to represent concatenation of SQL Strings:
Public Instance methods
+(ce)
Return a StringExpression representing the concatenation of the receiver with the given argument.
Sequel[:x].sql_string + :y # => "x" || "y"
[show source]
# File lib/sequel/sql.rb 978 def +(ce) 979 StringExpression.new(:'||', self, ce) 980 end