[GENERAL] how to use savepoint and rollback in function

[tushar nehete]

Hi All,
In Postgresql we can use savepoint and rollback to savepoint in transaction.
But we cannot use savepoint in function.
Currently I am doing migration from Informix to Postgresql 8.4.
In Informix they used Savepoint.
Please advice how to use Savepoint and rollback to savepoint in function.
I know Postgresql has autocommit. But I want to rollback to a particular
savepoint.

Thanks & Regards,
Tushar