Module: Sequel::SQL::CastMethods

Included in:
SpecificExpressionMethods, String
Defined in:
lib/sequel_core/sql.rb

Overview

Holds methods that are used to cast objects to differen SQL types.

Instance Method Summary collapse

Instance Method Details

#cast(sql_type) ⇒ Object Also known as: cast_as

Cast the reciever to the given SQL type



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# File 'lib/sequel_core/sql.rb', line 181

def cast(sql_type)
  IrregularFunction.new(:cast, self, :AS, sql_type.to_s.lit)
end

#cast_numeric(sql_type = nil) ⇒ Object

Cast the reciever to the given SQL type (or integer if none given), and return the result as a NumericExpression.



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# File 'lib/sequel_core/sql.rb', line 188

def cast_numeric(sql_type = nil)
  cast(sql_type || :integer).sql_number
end

#cast_string(sql_type = nil) ⇒ Object

Cast the reciever to the given SQL type (or text if none given), and return the result as a StringExpression, so you can use + directly on the result for SQL string concatenation.



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# File 'lib/sequel_core/sql.rb', line 195

def cast_string(sql_type = nil)
  cast(sql_type || :text).sql_string
end