Provided by: postgresql-doc-11_11.5-1_all 

NAME
SPI_cursor_close - close a cursor
SYNOPSIS
void SPI_cursor_close(Portal portal)
DESCRIPTION
SPI_cursor_close closes a previously created cursor and releases its portal storage. All open cursors are closed automatically at the end of a transaction. SPI_cursor_close need only be invoked if it is desirable to release resources sooner.
ARGUMENTS
Portal portal portal containing the cursor