Module Sequel::SQL::ComplexExpressionMethods
In: lib/sequel_core/sql.rb

This module includes other Sequel::SQL::*Methods modules and is included in other classes that are could be either booleans, strings, or numbers. It also adds three methods so that can specify behavior in case one of the operator methods has been overridden (such as Symbol#/).

For example, if Symbol#/ is overridden to produce a string (for example, to make file system path creation easier), the following code will not do what you want:

  :price/10 > 100

In that case, you need to do the following:

  :price.sql_number/10 > 100

Methods

Public Instance methods

Extract a datetime_part (e.g. year, month) from self:

  :date.extract(:year) # SQL:  extract(year FROM date)

Also has the benefit of returning the result as a NumericExpression instead of a generic ComplexExpression.

[Source]

     # File lib/sequel_core/sql.rb, line 343
343:       def extract(datetime_part)
344:         IrregularFunction.new(:extract, datetime_part.to_s.lit, :FROM, self).sql_number
345:       end

Return a BooleanExpression representation of self.

[Source]

     # File lib/sequel_core/sql.rb, line 348
348:       def sql_boolean
349:         BooleanExpression.new(:NOOP, self)
350:       end

Return a NumericExpression representation of self.

[Source]

     # File lib/sequel_core/sql.rb, line 353
353:       def sql_number
354:         NumericExpression.new(:NOOP, self)
355:       end

Return a StringExpression representation of self.

[Source]

     # File lib/sequel_core/sql.rb, line 358
358:       def sql_string
359:         StringExpression.new(:NOOP, self)
360:       end

[Validate]