class documentation

MySQL-specific implementation of INSERT. Adds methods for MySQL-specific syntaxes such as ON DUPLICATE KEY UPDATE. The :class:`~.mysql.Insert` object is created using the :func:`sqlalchemy.dialects.mysql.insert` function. .. versionadded:: 1.2

Method on_duplicate_key_update Specifies the ON DUPLICATE KEY UPDATE clause.
Class Variable inherit_cache Indicate if this :class:`.HasCacheKey` instance should make use of the cache key generation scheme used by its immediate superclass.
Class Variable stringify_dialect Undocumented
Property inserted Provide the "inserted" namespace for an ON DUPLICATE KEY UPDATE statement
Property inserted_alias Undocumented
Instance Variable _post_values_clause used by extensions to Insert etc. to add additional syntacitcal constructs, e.g. ON CONFLICT etc.

Inherited from Insert:

Method __init__ Undocumented
Method from_select Return a new :class:`_expression.Insert` construct which represents an ``INSERT...FROM SELECT`` statement.
Method inline Make this :class:`_expression.Insert` construct "inline" .
Method returning Add a :term:`RETURNING` or equivalent clause to this statement.
Class Variable __visit_name__ Undocumented
Class Variable is_insert Undocumented
Class Variable table Undocumented
Instance Variable include_insert_from_select_defaults Undocumented
Instance Variable select SELECT statement for INSERT .. FROM SELECT
Class Variable _supports_multi_parameters Undocumented
Class Variable _traverse_internals Undocumented
Instance Variable _inline Undocumented
Instance Variable _select_names Undocumented

Inherited from ValuesBase (via Insert):

Method values Specify a fixed VALUES clause for an INSERT statement, or the SET clause for an UPDATE.
Class Variable _multi_values Undocumented
Class Variable _ordered_values Undocumented
Instance Variable _values Undocumented

Inherited from UpdateBase (via Insert, ValuesBase):

Method corresponding_column Undocumented
Method params Set the parameters for the statement.
Method return_defaults Make use of a :term:`RETURNING` clause for the purpose of fetching server-side expressions and defaults, for supporting backends only.
Method with_dialect_options Add dialect options to this INSERT/UPDATE/DELETE object.
Method with_hint Add a table hint for a single table to this INSERT/UPDATE/DELETE statement.
Class Variable is_dml Undocumented
Class Variable named_with_column Undocumented
Property entity_description Return a :term:`plugin-enabled` description of the table and/or entity which this DML construct is operating against.
Property exported_columns Return the RETURNING columns as a column collection for this statement.
Property returning_column_descriptions Return a :term:`plugin-enabled` description of the columns which this DML construct is RETURNING against, in other words the expressions established as part of :meth:`.UpdateBase.returning`.
Method _generate_fromclause_column_proxies Populate columns into an :class:`.AliasedReturnsRows` object.
Class Variable _returning Undocumented
Instance Variable _hints Undocumented
Instance Variable _return_defaults Undocumented
Instance Variable _return_defaults_columns Undocumented
Instance Variable _supplemental_returning Undocumented
Property _all_selected_columns A sequence of column expression objects that represents the "selected" columns of this :class:`_expression.ReturnsRows`.

Inherited from DMLRole (via Insert, ValuesBase, UpdateBase):

Class Variable __slots__ Undocumented

Inherited from HasCTE (via Insert, ValuesBase, UpdateBase, DMLRole):

Method add_cte Add one or more :class:`_sql.CTE` constructs to this statement.
Method cte Return a new :class:`_expression.CTE`, or Common Table Expression instance.
Class Variable _has_ctes_traverse_internals Undocumented
Class Variable _independent_ctes Undocumented
Class Variable _independent_ctes_opts Undocumented

Inherited from SelectsRows (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole):

Method _generate_columns_plus_names Generate column names as rendered in a SELECT statement by the compiler.

Inherited from HasCompileState (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows):

Class Variable _compile_state_plugin Undocumented

Inherited from DialectKWArgs (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState):

Class Method argument_for Add a new kind of dialect-specific keyword argument for this class.
Property dialect_kwargs A collection of keyword arguments specified as dialect-specific options to this construct.
Property dialect_options A collection of keyword arguments specified as dialect-specific options to this construct.
Property kwargs A synonym for :attr:`.DialectKWArgs.dialect_kwargs`.
Method _kw_reg_for_dialect_cls Undocumented
Method _validate_dialect_kwargs Undocumented
Class Variable _dialect_kwargs_traverse_internals Undocumented
Class Variable _kw_registry Undocumented

Inherited from HasPrefixes (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs):

Method prefix_with Add one or more expressions following the statement keyword, i.e. SELECT, INSERT, UPDATE, or DELETE. Generative.
Class Variable _has_prefixes_traverse_internals Undocumented
Instance Variable _prefixes Undocumented

Inherited from Generative (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes):

Method _generate Undocumented

Inherited from Executable (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows):

Method execution_options Set non-SQL options for the statement which take effect during execution.
Method get_execution_options Get the non-SQL options which will take effect during execution.
Method options Apply options to this statement.
Class Variable is_delete Undocumented
Class Variable is_select Undocumented
Class Variable is_text Undocumented
Class Variable is_update Undocumented
Class Variable supports_execution Undocumented
Method _add_context_option Add a context option to this statement.
Method _compile_w_cache Undocumented
Method _execute_on_connection Undocumented
Method _execute_on_scalar Undocumented
Method _set_compile_options Assign the compile options to a new value.
Method _update_compile_options update the _compile_options with new keys.
Class Variable _executable_traverse_internals Undocumented
Class Variable _is_default_generator Undocumented
Class Variable _with_context_options Undocumented
Class Variable _with_options Undocumented
Instance Variable _compile_options Undocumented
Instance Variable _execution_options Undocumented
Property _effective_plugin_target Undocumented

Inherited from StatementRole (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable):

Class Variable _role_name Undocumented
Property _propagate_attrs Undocumented

Inherited from ReturnsRows (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole):

Method is_derived_from Return ``True`` if this :class:`.ReturnsRows` is 'derived' from the given :class:`.FromClause`.
Property selectable Undocumented
Method _refresh_for_new_column reset internal collections for an incoming column being added.
Class Variable _is_from_clause Undocumented
Class Variable _is_lateral Undocumented
Class Variable _is_returns_rows Undocumented
Class Variable _is_select_base Undocumented
Class Variable _is_select_statement Undocumented

Inherited from SQLRole (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole):

Class Variable allows_lambda Undocumented
Class Variable uses_inspection Undocumented

Inherited from DQLDMLClauseElement (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole):

Method compile Compile this SQL expression.
Method _compiler Return a compiler appropriate for this ClauseElement, given a Dialect.

Inherited from ClauseElement (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement):

Method __bool__ Undocumented
Method __getstate__ Undocumented
Method __invert__ Undocumented
Method __repr__ Undocumented
Method compare Compare this :class:`_expression.ClauseElement` to the given :class:`_expression.ClauseElement`.
Method get_children Return immediate child :class:`.visitors.HasTraverseInternals` elements of this :class:`.visitors.HasTraverseInternals`.
Method self_group Apply a 'grouping' to this :class:`_expression.ClauseElement`.
Method unique_params Return a copy with :func:`_expression.bindparam` elements replaced.
Class Variable is_clause_element Undocumented
Class Variable is_selectable Undocumented
Class Variable negation_clause Undocumented
Property description Undocumented
Property entity_namespace Undocumented
Method _clone Create a shallow copy of this ClauseElement.
Method _cloned_set Return the set consisting all cloned ancestors of this ClauseElement.
Method _negate Undocumented
Method _negate_in_binary a hook to allow the right side of a binary expression to respond to a negation of the binary expression.
Method _replace_params Undocumented
Method _set_propagate_attrs Undocumented
Method _ungroup Return this :class:`_expression.ClauseElement` without any groupings.
Method _with_binary_element_type in the context of binary expression, convert the type of this object to the one given.
Class Variable _cache_key_traversal Undocumented
Class Variable _gen_static_annotations_cache_key Undocumented
Class Variable _is_bind_parameter Undocumented
Class Variable _is_clause_list Undocumented
Class Variable _is_clone_of Undocumented
Class Variable _is_column_element Undocumented
Class Variable _is_from_container Undocumented
Class Variable _is_immutable Undocumented
Class Variable _is_keyed_column_element Undocumented
Class Variable _is_lambda_element Undocumented
Class Variable _is_select_container Undocumented
Class Variable _is_singleton_constant Undocumented
Class Variable _is_star Undocumented
Class Variable _is_table Undocumented
Class Variable _is_text_clause Undocumented
Class Variable _is_textual Undocumented
Property _constructor return the 'constructor' for this ClauseElement.
Property _from_objects Undocumented
Property _order_by_label_element Undocumented

Inherited from SupportsWrappingAnnotations (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement):

Method _annotate return a copy of this ClauseElement with annotations updated by the given dictionary.
Method _deannotate return a copy of this :class:`_expression.ClauseElement` with annotations removed.
Method _with_annotations return a copy of this ClauseElement with annotations replaced by the given dictionary.

Inherited from SupportsAnnotations (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations):

Class Variable proxy_set Undocumented
Method _gen_annotations_cache_key Undocumented
Property _annotations_cache_key Undocumented

Inherited from MemoizedHasCacheKey (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations):

Method _generate_cache_key return a cache key.

Inherited from HasCacheKey (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey):

Class Method _generate_cache_attrs generate cache key dispatcher for a new class.
Class Method _generate_cache_key_for_object Undocumented
Method _gen_cache_key return an optional cache key.
Class Variable _generated_cache_key_traversal Undocumented
Class Variable _hierarchy_supports_caching private attribute which may be set to False to prevent the inherit_cache warning from being emitted for a hierarchy of subclasses.
Class Variable _is_has_cache_key Undocumented

Inherited from HasCopyInternals (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey, HasCacheKey):

Method _copy_internals Reassign internal elements to be clones of themselves.

Inherited from CompilerElement (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey, HasCacheKey, HasCopyInternals, ExternallyTraversible, HasTraverseInternals):

Method __str__ Undocumented

Inherited from Visitable (via Insert, ValuesBase, UpdateBase, DMLRole, HasCTE, HasCTERole, SelectsRows, HasCompileState, DialectKWArgs, HasPrefixes, Generative, ExecutableReturnsRows, Executable, StatementRole, ReturnsRows, ReturnsRowsRole, SQLRole, DQLDMLClauseElement, ClauseElement, SupportsWrappingAnnotations, SupportsAnnotations, MemoizedHasCacheKey, HasCacheKey, HasCopyInternals, ExternallyTraversible, HasTraverseInternals, CompilerElement):

Method __class_getitem__ Undocumented
Method __init_subclass__ Undocumented
Class Method _generate_compiler_dispatch Undocumented
Method _compiler_dispatch Undocumented
Class Variable _original_compiler_dispatch Undocumented
@_generative
@_exclusive_against('_post_values_clause', msgs={'_post_values_clause': 'This Insert construct already has an ON DUPLICATE KEY clause present'})
def on_duplicate_key_update(self, *args, **kw) -> Self: (source)

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:`_schema.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:`_expression.Update` construct overall in :ref:`tutorial_parameter_ordered_updates`:: 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`

inherit_cache: bool = (source)

Indicate if this :class:`.HasCacheKey` instance should make use of the cache key generation scheme used by its immediate superclass. The attribute defaults to ``None``, which indicates that a construct has not yet taken into account whether or not its appropriate for it to participate in caching; this is functionally equivalent to setting the value to ``False``, except that a warning is also emitted. This flag can be set to ``True`` on a particular class, if the SQL that corresponds to the object does not change based on attributes which are local to this class, and not its superclass. .. seealso:: :ref:`compilerext_caching` - General guideslines for setting the :attr:`.HasCacheKey.inherit_cache` attribute for third-party or user defined SQL constructs.

Provide 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:`_expression.Insert.values` method. .. tip:: The :attr:`_mysql.Insert.inserted` attribute is an instance of :class:`_expression.ColumnCollection`, which provides an interface the same as that of the :attr:`_schema.Table.c` collection described at :ref:`metadata_tables_and_columns`. With this collection, ordinary names are accessible like attributes (e.g. ``stmt.inserted.some_column``), but special names and dictionary method names should be accessed using indexed access, such as ``stmt.inserted["column name"]`` or ``stmt.inserted["values"]``. See the docstring for :class:`_expression.ColumnCollection` for further examples. .. seealso:: :ref:`mysql_insert_on_duplicate_key_update` - example of how to use :attr:`_expression.Insert.inserted`

@util.memoized_property
inserted_alias = (source)

Undocumented

_post_values_clause = (source)

used by extensions to Insert etc. to add additional syntacitcal constructs, e.g. ON CONFLICT etc.