Module Sequel::SQL::CastMethods
In: lib/sequel/sql.rb

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

Methods

Public Instance methods

Cast the reciever to the given SQL type. You can specify a ruby class as a type, and it is handled similarly to using a database independent type in the schema methods.

  :a.cast(:integer) # CAST(a AS integer)
  :a.cast(String) # CAST(a AS varchar(255))

[Source]

     # File lib/sequel/sql.rb, line 274
274:       def cast(sql_type)
275:         Cast.new(self, sql_type)
276:       end

Cast the reciever to the given SQL type (or the database‘s default Integer type if none given), and return the result as a NumericExpression, so you can use the bitwise operators on the result.

  :a.cast_numeric # CAST(a AS integer)
  :a.cast_numeric(Float) # CAST(a AS double precision)

[Source]

     # File lib/sequel/sql.rb, line 284
284:       def cast_numeric(sql_type = nil)
285:         cast(sql_type || Integer).sql_number
286:       end

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

  :a.cast_string # CAST(a AS varchar(255))
  :a.cast_string(:text) # CAST(a AS text)

[Source]

     # File lib/sequel/sql.rb, line 294
294:       def cast_string(sql_type = nil)
295:         cast(sql_type || String).sql_string
296:       end

[Validate]