Represents an aliasing of an expression to a given alias.
The alias to use for the expression.
The columns aliases (derived column list) to use, for when the aliased expression is a record or set of records (such as a dataset).
The expression to alias
Create an object with the given expression, alias, and optional column aliases.
# File lib/sequel/sql.rb, line 984 def initialize(expression, aliaz, columns=nil) @expression = expression @alias = aliaz @columns = columns freeze end