SHOW SAVEPOINT STATUS statement lists the active savepoints in the current transaction.
No privileges are required to create or show a savepoint. However, privileges are required for each statement within a transaction.
The following fields are returned for each savepoint.
||The name of the savepoint.|
||Whether the savepoint is the outermost savepoint in the transaction.|
First, open a transaction using
BEGIN, and create a nested transaction using a savepoint:
> BEGIN; SAVEPOINT foo;
Next, use the
SHOW SAVEPOINT STATUS statement to list the active savepoints in the current nested transaction.
> SHOW SAVEPOINT STATUS;
savepoint_name | is_initial_savepoint -----------------+----------------------- foo | true (1 row)
Currently, there is only one savepoint.
We can commit this nested transaction by issuing the
RELEASE SAVEPOINT statement. Then, we clear the connection for the next transaction by issuing a
> RELEASE SAVEPOINT foo; COMMIT;
If we did not want to commit this nested transaction, but restart it instead, we would have issued a
ROLLBACK TO SAVEPOINT.