Provided by: postgresql-doc-11_11.5-1_all
SPI_getargcount - return the number of arguments needed by a statement prepared by SPI_prepare
int SPI_getargcount(SPIPlanPtr plan)
SPI_getargcount returns the number of arguments needed to execute a statement prepared by SPI_prepare.
SPIPlanPtr plan prepared statement (returned by SPI_prepare)
The count of expected arguments for the plan. If the plan is NULL or invalid, SPI_result is set to SPI_ERROR_ARGUMENT and -1 is returned.