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SPI_FINISH(3) PostgreSQL 9.5.0 Documentation SPI_FINISH(3)
SPI_finish - disconnect a procedure from the SPI manager
SPI_finish closes an existing connection to the SPI manager. You must
call this function after completing the SPI operations needed during
your procedure's current invocation. You do not need to worry about
making this happen, however, if you abort the transaction via
elog(ERROR). In that case SPI will clean itself up automatically.
If SPI_finish is called without having a valid connection, it will
return SPI_ERROR_UNCONNECTED. There is no fundamental problem with
this; it means that the SPI manager has nothing to do.
if properly disconnected
if called from an unconnected procedure
PostgreSQL 9.5.0 2016 SPI_FINISH(3)