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:

TradingAccounts_table = TradingAccounts.metadata.tables["TradingAccounts"]

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(TradingAccounts_table.insert(), {"TradingAccountUUID": "Joe Smith", "Name": "Smith"})

Update

The following example modifies an existing record in the table:

session.execute(TradingAccounts_table.update().where(TradingAccounts_table.c.TradingAccountUUID == "c2ef66a5-a545-413b-9312-79a53caadbc4").values(TradingAccountUUID="Joe Smith", Name="Smith"))

Delete

The following example removes an existing record from the table:

session.execute(TradingAccounts_table.delete().where(TradingAccounts_table.c.TradingAccountUUID == "c2ef66a5-a545-413b-9312-79a53caadbc4"))