django.db.models.sql.datastructures

module documentation

Useful auxiliary data structures for query construction. Not useful outside the SQL domain.
Class ​Base​Table No summary
Class ​Empty Undocumented
Class ​Join Used by sql.Query and sql.SQLCompiler to generate JOIN clauses into the FROM entry. For example, the SQL generated could be LEFT OUTER JOIN "sometable" T1 ON ("othertable"."sometable_id" = "sometable"."id")
Class ​Multi​Join Used by join construction code to indicate the point at which a multi-valued join was attempted (if the caller wants to treat that exceptionally).