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SPI_FREETUPTABLE(3) PostgreSQL 9.5.0 Documentation SPI_FREETUPTABLE(3)
SPI_freetuptable - free a row set created by SPI_execute or a similar
void SPI_freetuptable(SPITupleTable * tuptable)
SPI_freetuptable frees a row set created by a prior SPI command
execution function, such as SPI_execute. Therefore, this function is
often called with the global variable SPI_tuptable as argument.
This function is useful if a SPI procedure needs to execute multiple
commands and does not want to keep the results of earlier commands
around until it ends. Note that any unfreed row sets will be freed
anyway at SPI_finish. Also, if a subtransaction is started and then
aborted within execution of a SPI procedure, SPI automatically frees
any row sets created while the subtransaction was running.
Beginning in PostgreSQL 9.3, SPI_freetuptable contains guard logic to
protect against duplicate deletion requests for the same row set. In
previous releases, duplicate deletions would lead to crashes.
SPITupleTable * tuptable
pointer to row set to free, or NULL to do nothing
PostgreSQL 9.5.0 2016 SPI_FREETUPTABLE(3)