Commands can be executed individually by the session with a call to "execute()".

Obtaining the Table Object

The query supplied to this method is constructed using the associated Table object of a mapped class. This Table object is obtained from the mapped class's metadata field, as below:

Movies_table = Movies.metadata.tables["Movies"]

Once the table object is obtained, the write operations are executed in the following ways. The queries are executed immediately without the need for a call to "commit()":

Insert

The following example adds a new record to the table:

session.execute(Movies_table.insert(), {"MovieRuntime": "R", "MovieRating": "R"})

Update

The following example modifies an existing record in the table:

session.execute(Movies_table.update().where(Movies_table.c.Id == "70f6284d2a395396dbb3a60b4ce3d2d6").values(MovieRuntime="R", MovieRating="R"))

Delete

The following example removes an existing record from the table:

session.execute(Movies_table.delete().where(Movies_table.c.Id == "70f6284d2a395396dbb3a60b4ce3d2d6"))