Transaction Rollback errors

Siddharth Jain <siddhsql@gmail.com> writes:

when my application (Node.js) receives a class 40 error:

Class 40 — Transaction Rollback
40000 transaction_rollback
40002 transaction_integrity_constraint_violation
40001 serialization_failure
40003 statement_completion_unknown
40P01 deadlock_detectedthen does it mean PG has already rolled back the tx
and therefore I should not attempt to roll it back again? Thanks,

No, treat these the same as any other error.

regards, tom lane