A quick look at PLy_spi_execute_query shows that it runs each command
in a subtransaction. It pretty much has to, because the coding rules
for a Python method don't permit it to just longjmp out of the Python
interpreter, so it has to set up a subtransaction so it can catch any
error. In this example, each subtransaction will consume an XID.
That makes sense. Thank you very much.
Regards,
Michał Albrycht
