class SQLUpdateCompiler(compiler.SQLUpdateCompiler, SQLCompiler):
Undocumented
| Method | as_sql |
Create the SQL for this query. Return the SQL string and list of parameters. |
Inherited from SQLUpdateCompiler:
| Method | execute_sql |
No summary |
| Method | pre_sql_setup |
If the update depends on results from other tables, munge the "where" conditions to match the format required for (portable) SQL updates. |
Inherited from SQLCompiler (via SQLUpdateCompiler):
| Method | __init__ |
Undocumented |
| Method | _order_by_pairs |
Undocumented |
| Method | _setup_joins |
Helper method for get_order_by() and get_distinct(). |
| Method | apply_converters |
Undocumented |
| Method | as_subquery_condition |
Undocumented |
| Method | collapse_group_by |
Undocumented |
| Method | compile |
Undocumented |
| Method | deferred_to_columns |
Convert the self.deferred_loading data structure to mapping of table names to sets of column names which are to be loaded. Return the dictionary. |
| Method | explain_query |
Undocumented |
| Method | find_ordering_name |
Return the table alias (the name might be ambiguous, the alias will not be) and column name for ordering by the given 'name' parameter. The 'name' is of the form 'field1__field2__...__fieldN'. |
| Method | get_combinator_sql |
Undocumented |
| Method | get_converters |
Undocumented |
| Method | get_default_columns |
No summary |
| Method | get_distinct |
Return a quoted list of fields to use in DISTINCT ON part of the query. |
| Method | get_extra_select |
Undocumented |
| Method | get_from_clause |
No summary |
| Method | get_group_by |
Return a list of 2-tuples of form (sql, params). |
| Method | get_order_by |
Return a list of 2-tuples of the form (expr, (sql, params, is_ref)) for the ORDER BY clause. |
| Method | get_related_selections |
No summary |
| Method | get_select |
No summary |
| Method | get_select_for_update_of_arguments |
Return a quoted list of arguments for the SELECT FOR UPDATE OF part of the query. |
| Method | has_results |
Backends (e.g. NoSQL) can override this in order to use optimized versions of "query has any results." |
| Method | quote_name_unless_alias |
A wrapper around connection.ops.quote_name that doesn't quote aliases for table names. This avoids problems with some SQL dialects that treat quoted strings specially (e.g. PostgreSQL). |
| Method | results_iter |
Return an iterator over the results from executing this query. |
| Method | setup_query |
Undocumented |
| Class Variable | ordering_parts |
Undocumented |
| Instance Variable | _meta_ordering |
Undocumented |
| Instance Variable | annotation_col_map |
Undocumented |
| Instance Variable | col_count |
Undocumented |
| Instance Variable | connection |
Undocumented |
| Instance Variable | elide_empty |
Undocumented |
| Instance Variable | has_extra_select |
Undocumented |
| Instance Variable | having |
Undocumented |
| Instance Variable | klass_info |
Undocumented |
| Instance Variable | query |
Undocumented |
| Instance Variable | quote_cache |
Undocumented |
| Instance Variable | select |
Undocumented |
| Instance Variable | using |
Undocumented |
| Instance Variable | where |
Undocumented |
Inherited from SQLCompiler:
| Method | as_subquery_condition |
Undocumented |
Inherited from SQLCompiler (via SQLCompiler):
| Method | __init__ |
Undocumented |
| Method | _order_by_pairs |
Undocumented |
| Method | _setup_joins |
Helper method for get_order_by() and get_distinct(). |
| Method | apply_converters |
Undocumented |
| Method | collapse_group_by |
Undocumented |
| Method | compile |
Undocumented |
| Method | deferred_to_columns |
Convert the self.deferred_loading data structure to mapping of table names to sets of column names which are to be loaded. Return the dictionary. |
| Method | execute_sql |
Run the query against the database and return the result(s). The return value is a single data item if result_type is SINGLE, or an iterator over the results if the result_type is MULTI. |
| Method | explain_query |
Undocumented |
| Method | find_ordering_name |
Return the table alias (the name might be ambiguous, the alias will not be) and column name for ordering by the given 'name' parameter. The 'name' is of the form 'field1__field2__...__fieldN'. |
| Method | get_combinator_sql |
Undocumented |
| Method | get_converters |
Undocumented |
| Method | get_default_columns |
No summary |
| Method | get_distinct |
Return a quoted list of fields to use in DISTINCT ON part of the query. |
| Method | get_extra_select |
Undocumented |
| Method | get_from_clause |
No summary |
| Method | get_group_by |
Return a list of 2-tuples of form (sql, params). |
| Method | get_order_by |
Return a list of 2-tuples of the form (expr, (sql, params, is_ref)) for the ORDER BY clause. |
| Method | get_related_selections |
No summary |
| Method | get_select |
No summary |
| Method | get_select_for_update_of_arguments |
Return a quoted list of arguments for the SELECT FOR UPDATE OF part of the query. |
| Method | has_results |
Backends (e.g. NoSQL) can override this in order to use optimized versions of "query has any results." |
| Method | pre_sql_setup |
Do any necessary class setup immediately prior to producing SQL. This is for things that can't necessarily be done in __init__ because we might not have all the pieces in place at that time. |
| Method | quote_name_unless_alias |
A wrapper around connection.ops.quote_name that doesn't quote aliases for table names. This avoids problems with some SQL dialects that treat quoted strings specially (e.g. PostgreSQL). |
| Method | results_iter |
Return an iterator over the results from executing this query. |
| Method | setup_query |
Undocumented |
| Class Variable | ordering_parts |
Undocumented |
| Instance Variable | _meta_ordering |
Undocumented |
| Instance Variable | annotation_col_map |
Undocumented |
| Instance Variable | col_count |
Undocumented |
| Instance Variable | connection |
Undocumented |
| Instance Variable | elide_empty |
Undocumented |
| Instance Variable | has_extra_select |
Undocumented |
| Instance Variable | having |
Undocumented |
| Instance Variable | klass_info |
Undocumented |
| Instance Variable | query |
Undocumented |
| Instance Variable | quote_cache |
Undocumented |
| Instance Variable | select |
Undocumented |
| Instance Variable | using |
Undocumented |
| Instance Variable | where |
Undocumented |