Savepoints can be nested so it can get confusing as to when a particular savepoint was issued. You can quickly list the savepoints issued for the current transaction by querying the QUERY_PROFILES system table.
Example:
dbadmin=> CREATE TABLE saves (C INT);
CREATE TABLE
dbadmin=> INSERT INTO saves SELECT 1;
OUTPUT
--------
1
(1 row)
dbadmin=> INSERT INTO saves SELECT 2;
OUTPUT
--------
1
(1 row)
dbadmin=> SAVEPOINT abc;
SAVEPOINT
dbadmin=> INSERT INTO saves SELECT 3;
OUTPUT
--------
1
(1 row)
dbadmin=> INSERT INTO saves SELECT 4;
OUTPUT
--------
1
(1 row)
dbadmin=> SAVEPOINT x1;
SAVEPOINT
dbadmin=> DELETE FROM saves WHERE c = 1;
OUTPUT
--------
1
(1 row)
dbadmin=> SAVEPOINT save_1;
SAVEPOINT
dbadmin=> SELECT query_start, query
dbadmin-> FROM query_profiles
dbadmin-> WHERE session_id = current_session()
dbadmin-> AND transaction_id = current_trans_id()
dbadmin-> AND query_type = 'TRANSACTION'
dbadmin-> ORDER BY query_start DESC;
query_start | query
-------------------------------+-------------------
2019-01-01 08:20:09.09355-05 | SAVEPOINT save_1;
2019-01-01 08:19:26.022173-05 | SAVEPOINT x1;
2019-01-01 08:10:11.703962-05 | SAVEPOINT abc;
(3 rows)
Helpful Links:https://www.vertica.com/docs/latest/HTML/Content/Authoring/SQLReferenceManual/Statements/SAVEPOINT.htm
https://www.vertica.com/docs/latest/HTML/Content/Authoring/SQLReferenceManual/SystemTables/MONITOR/QUERY_PROFILES.htm
Have fun!
About the Author
James Knicely
Vertica Field Chief Technologist
I've had the privilege of working with many database technologies in my career. But after being introduced to Vertica in May of 2011 as a client, I was hooked on the new technology after witnessing a query run in milliseconds that had previously ran for hours on the legacy database we had in place. It was then that I knew I wanted to eventually join the Vertica team, and 4 years later I did! I am currently a Vertica evangelist and am ready to help you get on board! Please feel free to reach out to me with any questions you have about Vertica and make sure to follow my Vertica Quick Tips!
