MYSQL INSERT INTO UPDATE

Returned by the statement is also consumed implicitly when “ORM-style” single-row INSERT/UPDATE statement. ValuesBase.return_defaults() is intended only for an INSERT from SELECT, multi-valued VALUES clause),

Or for special cases of INSERT that return multiple rows (e.g.

MYSQL INSERT INTO UPDATE

Supports multiple rows for a multi-row UPDATE or DELETE statement, While the RETURNING construct in the general sense INSERT or an UPDATE statement that matches exactly one row per ValuesBase.return_defaults() is only intended for use with an This method differs from UpdateBase.returning() in these ways: Values will then be available on the result using theĬursorResult.returned_defaults accessor as UpdateBase.returning() is not used simultaneously. Values generated by SQL expression or server-side-default will beĪdded to any existing RETURNING clause, provided that When used against a backend that supports RETURNING, all column

execute ( stmt ) server_created_at = result. Refers to the Table being inserted, updated, or deleted: Is derived from the UpdateBase.table attribute, and The section Inspecting entities and columns from ORM-enabled SELECT and DML statementsįor a Core statement, the structure returned by this accessor This attribute is generally useful when using the ORM, as anĮxtended structure which includes information about mappedĮntities is returned. Return a plugin-enabled description of the table and/orĮntity which this DML construct is operating against. Return a ‘bind’ linked to this UpdateBase Order to determine the availability of RETURNING.Ĭlass (, ,, ,, ,, ) attribute. Read the documentation notes for the database in use in Varies greatly, including restrictions on executemany()Īnd other statements which return multiple rows. For those backends with no support,Īn exception is raised upon compilation and/or execution.įor those who do support it, the functionality across backends cx_oracle), SQLAlchemy willĪpproximate this behavior at the result level so that a reasonableĪmount of behavioral neutrality is provided. Upon execution, the values of the columns to be returned are madeĪvailable via the result set and can be iterated using The values are those of the rows which were deleted. The values are the newly inserted/updated values. Upon compilation, a RETURNING clause, or database equivalent, ) > print ( stmt ) INSERT INTO some_table (first_name, last_name) VALUES (:first_name, :last_name) RETURNING some_table.first_name || :first_name_1 || some_table.last_name AS fullname The subquery to the outer table being updated: Parent table, that is, providing criterion which links the table inside When combining select() constructs within theīy the select() should be correlated to the string, number, etc.)Ī SQL expression, such as a related Column, The values referred to in values are typically:Ī literal data value (i.e. The tables referred to in the WHERE clause. UPDATE statement can refer to columns from any of However when using MySQL, a multiple-table Part of the target Table that is the table Objects or their string identifiers (specifically the “key” of theĬolumn, normally but not necessarily equivalent toĬolumn objects used here are expected to be The keys within values can be either Column If both values and compile-time bind parameters are present, theĬompile-time bind parameters override the information specified Parameter-Ordered Updates - illustrates the

Mysql insert into