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Diffstat (limited to 'doc/build/changelog/changelog_06.rst')
| -rw-r--r-- | doc/build/changelog/changelog_06.rst | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/doc/build/changelog/changelog_06.rst b/doc/build/changelog/changelog_06.rst index c7f4dcdea..18d61019a 100644 --- a/doc/build/changelog/changelog_06.rst +++ b/doc/build/changelog/changelog_06.rst @@ -1013,7 +1013,7 @@ New Query methods: query.label(name), query.as_scalar(), return the query's statement as a scalar subquery with /without label; - query.with_entities(*ent), replaces the SELECT list of + query.with_entities(\*ent), replaces the SELECT list of the query with new entities. Roughly equivalent to a generative form of query.values() which accepts mapped entities as well as column @@ -1246,7 +1246,7 @@ :tags: sql :tickets: - Added type_coerce(expr, type_) expression element. + Added type_coerce(expr, type\_) expression element. Treats the given expression as the given type when evaluating expressions and processing result rows, but does not affect the generation of SQL, other than an anonymous @@ -3005,7 +3005,7 @@ :tags: orm :tickets: - Query gains an add_columns(*columns) method which is a multi- + Query gains an add_columns(\*columns) method which is a multi- version of add_column(col). add_column(col) is future deprecated. @@ -3641,9 +3641,9 @@ :tags: declarative :tickets: - DeclarativeMeta exclusively uses cls.__dict__ (not dict_) + DeclarativeMeta exclusively uses cls.__dict__ (not dict\_) as the source of class information; _as_declarative exclusively - uses the dict_ passed to it as the source of class information + uses the dict\_ passed to it as the source of class information (which when using DeclarativeMeta is cls.__dict__). This should in theory make it easier for custom metaclasses to modify the state passed into _as_declarative. @@ -4190,10 +4190,10 @@ * Passing a single list of elements to eagerload(), eagerload_all(), contains_eager(), lazyload(), defer(), and undefer() instead of multiple positional - *args is deprecated. + \*args is deprecated. * Passing a single list of elements to query.order_by(), query.group_by(), query.join(), or query.outerjoin() - instead of multiple positional *args is deprecated. + instead of multiple positional \*args is deprecated. * query.iterate_instances() is removed. Use query.instances(). * Query.query_from_parent() is removed. Use the sqlalchemy.orm.with_parent() function to produce a @@ -4363,7 +4363,7 @@ "expr != expr" can be very expensive, and it's preferred that the user not issue in_() if the list is empty, instead simply not querying, or modifying the criterion - as appropriate for more complex situations. + as appropriate for more complex situations. .. change:: :tags: sql @@ -4523,7 +4523,7 @@ * the "connection" argument from engine.transaction() and engine.run_callable() is removed - Connection itself now has those methods. All four methods accept - *args and **kwargs which are passed to the given callable, + \*args and \**kwargs which are passed to the given callable, as well as the operating connection. .. change:: @@ -4570,11 +4570,13 @@ Removed public mutability from Index and Constraint objects: - - ForeignKeyConstraint.append_element() - - Index.append_column() - - UniqueConstraint.append_column() - - PrimaryKeyConstraint.add() - - PrimaryKeyConstraint.remove() + + * ForeignKeyConstraint.append_element() + * Index.append_column() + * UniqueConstraint.append_column() + * PrimaryKeyConstraint.add() + * PrimaryKeyConstraint.remove() + These should be constructed declaratively (i.e. in one construction). @@ -4682,18 +4684,22 @@ The signature of the "on" callable passed to DDL() and DDLElement() is revised as follows: - "ddl" - the DDLElement object itself. - "event" - the string event name. - "target" - previously "schema_item", the Table or - MetaData object triggering the event. - "connection" - the Connection object in use for the operation. - **kw - keyword arguments. In the case of MetaData before/after - create/drop, the list of Table objects for which - CREATE/DROP DDL is to be issued is passed as the kw - argument "tables". This is necessary for metadata-level - DDL that is dependent on the presence of specific tables. + ddl + the DDLElement object itself + event + the string event name. + target + previously "schema_item", the Table or MetaData object triggering the event. + connection + the Connection object in use for the operation. + \**kw + keyword arguments. In the case of MetaData before/after + create/drop, the list of Table objects for which + CREATE/DROP DDL is to be issued is passed as the kw + argument "tables". This is necessary for metadata-level + DDL that is dependent on the presence of specific tables. - - the "schema_item" attribute of DDL has been renamed to + The "schema_item" attribute of DDL has been renamed to "target". .. change:: |