U x^@sddlmZddlmZddlmZddlmZddlm Z ddl m Z ddl m Z dZGd d d eZe ed ZGd d d e ZdS))exc)util) _generative)Insert) ClauseElement)alias)public_factory)rinsertc@s6eZdZdZeddZejddZe ddZ dS) rzMySQL-specific implementation of INSERT. Adds methods for MySQL-specific syntaxes such as ON DUPLICATE KEY UPDATE. .. versionadded:: 1.2 cCs|jjS)aProvide the "inserted" namespace for an ON DUPLICATE KEY UPDATE statement MySQL's ON DUPLICATE KEY UPDATE clause allows reference to the row that would be inserted, via a special function called ``VALUES()``. This attribute provides all columns in this row to be referenceable such that they will render within a ``VALUES()`` function inside the ON DUPLICATE KEY UPDATE clause. The attribute is named ``.inserted`` so as not to conflict with the existing :meth:`.Insert.values` method. .. seealso:: :ref:`mysql_insert_on_duplicate_key_update` - example of how to use :attr:`.Insert.inserted` )inserted_aliascolumnsselfrE/tmp/pip-install-dq5v43_d/SQLAlchemy/sqlalchemy/dialects/mysql/dml.pyinsertedszInsert.insertedcCst|jddS)Nr)name)rtabler rrrr )szInsert.inserted_aliascOsV|r|rtd|r6t|dkr,td|d}n|}t|dd}t|||_|S)a* Specifies the ON DUPLICATE KEY UPDATE clause. :param \**kw: Column keys linked to UPDATE values. The values may be any SQL expression or supported literal Python values. .. warning:: This dictionary does **not** take into account Python-specified default UPDATE values or generation functions, e.g. those specified using :paramref:`.Column.onupdate`. These values will not be exercised for an ON DUPLICATE KEY UPDATE style of UPDATE, unless values are manually specified here. :param \*args: As an alternative to passing key/value parameters, a dictionary or list of 2-tuples can be passed as a single positional argument. Passing a single dictionary is equivalent to the keyword argument form:: insert().on_duplicate_key_update({"name": "some name"}) Passing a list of 2-tuples indicates that the parameter assignments in the UPDATE clause should be ordered as sent, in a manner similar to that described for the :class:`.Update` construct overall in :ref:`updates_order_parameters`:: insert().on_duplicate_key_update( [("name", "some name"), ("value", "some value")]) .. versionchanged:: 1.3 parameters can be specified as a dictionary or list of 2-tuples; the latter form provides for parameter ordering. .. versionadded:: 1.2 .. seealso:: :ref:`mysql_insert_on_duplicate_key_update` z9Can't pass kwargs and positional arguments simultaneouslyzDOnly a single dictionary or list of tuples is accepted positionally.r N)r ArgumentErrorlengetattrOnDuplicateClauseZ_post_values_clause)r argskwvaluesr rrron_duplicate_key_update-s,    zInsert.on_duplicate_key_updateN) __name__ __module__ __qualname____doc__propertyrrZmemoized_propertyr rrrrrrr s  rz.dialects.mysql.insertc@seZdZdZdZddZdS)rrNcCsZ||_t|tr:|r:t|dtr:dd|D|_t|}|rHt|tsPtd||_dS)NrcSsg|] \}}|qSrr).0keyvaluerrr sz.OnDuplicateClause.__init__..z/update parameter must be a non-empty dictionary)r isinstancelisttuple_parameter_orderingdict ValueErrorupdate)r r r,rrr__init__us  zOnDuplicateClause.__init__)rrrZ__visit_name__r)r-rrrrrpsrN)rrZsql.baserZsql.dmlrZStandardInsertZ sql.elementsrZsql.expressionrZutil.langhelpersr__all__r rrrrrs       `