Acuan index modelLink to this heading
Index classes ease creating database indexes. They can be added using the
Meta.indexes option. This document
explains the API references of Index which includes the index
options.
Pilihan IndexLink to this heading
- class Index(fields=(), name=None, db_tablespace=None)Link to this definition
Membuat sebuah index (B-tree) dalam basisdata.
fieldsLink to this heading
- Index.fieldsLink to this definition
Sebuah list atau tuple dari nama dari bidang-bidang dimana indeks diharapkan.
By default, indexes are created with an ascending order for each column. To define an index with a descending order for a column, add a hyphen before the field's name.
For example Index(fields=['headline', '-pub_date']) would create SQL with
(headline, pub_date DESC). Index ordering isn't supported on MySQL. In that
case, a descending index is created as a normal index.
nameLink to this heading
- Index.nameLink to this definition
The name of the index. If name isn't provided Django will auto-generate a
name. For compatibility with different databases, index names cannot be longer
than 30 characters and shouldn't start with a number (0-9) or underscore (_).
db_tablespaceLink to this heading
- Index.db_tablespaceLink to this definition
The name of the database tablespace to use for
this index. For single field indexes, if db_tablespace isn't provided, the
index is created in the db_tablespace of the field.
If Field.db_tablespace isn't specified (or if the index uses multiple
fields), the index is created in tablespace specified in the
db_tablespace option inside the model's
class Meta. If neither of those tablespaces are set, the index is created
in the same tablespace as the table.