SPI_rollback — abort the current transaction
void SPI_rollback(void)
SPI_rollback rolls back the
current transaction. It is approximately equivalent to running
the SQL command ROLLBACK. After a
transaction is rolled back, a new transaction has to be started
using SPI_start_transaction
before further database actions can be executed.
This function can only be executed if the SPI connection has
been set as nonatomic in the call to SPI_connect_ext.
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