SapDB_Prepared Class (sdb.sql Module) 
SapDB_Prepared is a class of the sdb.sql module. You can use the methods of this class to execute the same SQL statement multiple times with different parameters. This has the following advantages:
The database system only needs to check the syntax and privileges once.
The Python application does not have to convert parameters into an SQL syntax-appropriate format, so special characters do not require special treatment.
To generate an object of this class, use the prepare method (SapDB_Session class).