Module expressions

django.db.models.expressions

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Classes

class BaseExpression
Base class for all query expressions.
class Case
An SQL searched CASE expression:
class Col
class Combinable
Provide the ability to combine one or two objects with some connector. For example F('foo') + F('bar').
class CombinedExpression
class DurationExpression
class Exists
class Expression
An expression that can be combined with other expressions.
class ExpressionList
An expression containing multiple expressions. Can be used to provide a list of expressions as an argument to another expression, like an ordering clause.
class ExpressionWrapper
An expression that can wrap another expression so that it can provide extra context to the inner expression, such as the output_field.
class F
An object capable of resolving references to existing query objects.
class Func
An SQL function call.
class OrderBy
class OuterRef
class RawSQL
class Ref
Reference to column alias of the query. For example, Ref('sum_cost') in qs.annotate(sum_cost=Sum('cost')) query.
class ResolvedOuterRef
An object that contains a reference to an outer query.
class RowRange
class SQLiteNumericMixin
Some expressions with output_field=DecimalField() must be cast to numeric to be properly filtered.
class Star
class Subquery
An explicit subquery. It may contain OuterRef() references to the outer query which will be resolved when it is applied to that query.
class TemporalSubtraction
class Value
Represent a wrapped value as a node within an expression.
class ValueRange
class When
class Window
class WindowFrame
Model the frame clause in window expressions. There are two types of frame

Django

Module expressions

Classes