Module query

django.db.models.sql.query

Create SQL statements for QuerySets.

The code in here encapsulates all of the SQL construction so that QuerySets
themselves do not have to (and could be backed by things other than SQL
databases). The abstraction barrier only works one way: this module has to know
all about the internals of models in order to get the information it needs.

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Classes

class JoinPromoter
A class to abstract away join promotion problems for complex filter conditions.
class Query
A single SQL query.
class RawQuery
A single raw SQL query.

Functions

▷ def add_to_dict(data, key, value)
Add "value" to the set of values for "key", whether or not "key" already exists.
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▷ def get_children_from_q(q)
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▷ def get_field_names_from_opts(opts)
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▶ def get_order_dir(field, default='ASC')
Return the field name and direction for an order specification. For example, '-foo' is returned as ('foo', 'DESC').
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```
The 'default' param is used to indicate which way no prefix (or a '+'
prefix) should sort. The '-' prefix always sorts the opposite way.
```
Reexports
- Imported in django.db.models.sql.compiler.
▷ def is_reverse_o2o(field)
Check if the given field is reverse-o2o. The field is expected to be some sort of relation field or related object.
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Django

Module query

Classes

Functions

Reexports