Class UpdateQuery

Declaration

Documentation

Methods

• ▶ def __init__(self, *args, **kwargs) override

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  This method overrides django.db.models.sql.query.Query.__init__.

• ▶ def add_related_update(self, model, field, value)

  Add (name, value) to an update query for an ancestor model.

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  Update are coalesced so that only one update query per ancestor is run.

• ▷ def add_update_fields(self, values_seq)

  Append a sequence of (field, model, value) triples to the internal list that will be used to generate the UPDATE query. Might be more usefully called add_update_targets() to hint at the extra information here.

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• ▷ def add_update_values(self, values)

  Convert a dictionary of field name to value mappings into an update query. This is the entry point for the public update() method on querysets.

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• ▶ def clone(self) override

  inherited doc Return a copy of the current Query. A lightweight alternative to to deepcopy().

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  This method overrides django.db.models.sql.query.Query.clone.

• ▷ def get_related_updates(self)

  Return a list of query objects: one for each update required to an ancestor model. Each query will have the same filtering conditions as the current query but will only update a single table.

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• ▷ def update_batch(self, pk_list, values, using)

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Inherited methods

• Methods inherited from django.db.models.sql.query.Query:
  __deepcopy__, __str__, add_annotation, add_deferred_loading, add_distinct_fields, add_extra, add_fields, add_filter, add_filtered_relation, add_immediate_loading, add_ordering, add_q, add_select_col, add_select_related, annotation_select, append_annotation_mask, as_sql, base_table, build_filter, build_filtered_relation_q, build_lookup, build_where, bump_prefix, can_filter, chain, change_aliases, check_filterable, check_query_object_type, check_related_objects, clear_deferred_loading, clear_limits, clear_ordering, clear_select_clause, clear_select_fields, combine, count_active_tables, deferred_to_data, demote_joins, exists, explain, extra_select, get_aggregation, get_compiler, get_count, get_external_cols, get_initial_alias, get_loaded_field_names, get_loaded_field_names_cb, get_meta, has_filters, has_limit_one, has_results, has_select_fields, identity, is_empty, is_nullable, is_sliced, join, join_parent_model, names_to_path, output_field, promote_joins, ref_alias, relabeled_clone, reset_refcounts, resolve_expression, resolve_lookup_value, resolve_ref, rewrite_cols, set_annotation_mask, set_empty, set_extra_mask, set_group_by, set_limits, set_select, set_values, setup_joins, solve_lookup_type, split_exclude, sql_with_params, table_alias, trim_joins, trim_start, try_transform, unref_alias
• Methods inherited from django.db.models.expressions.BaseExpression:
  __eq__, __getstate__, __hash__, asc, conditional, contains_aggregate, contains_column_references, contains_over_clause, convert_value, copy, desc, field, flatten, get_db_converters, get_group_by_cols, get_lookup, get_source_expressions, get_source_fields, get_transform, reverse_ordering, select_format, set_source_expressions

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