class ExtractYear(expression, tzinfo=None, **extra) [source] lookup_name

class Greatest(*expressions, **extra) [source] New

class ExtractMinute(expression, tzinfo=None, **extra) [source] lookup_name

class ExtractDay(expression, tzinfo=None, **extra) [source] lookup_name

class ExtractWeekDay(expression, tzinfo=None, **extra) [source] lookup_name

class Concat(*expressions, **extra) [source] Accepts a list of at least two text fields or

class Coalesce(*expressions, **extra) [source] Accepts a list of at least two field names

class Now [source] New in Django 1.9.

class Length(expression, **extra) [source] Accepts a single text field or expression and

class Upper(expression, **extra) [source] Accepts a single text field or expression and returns