Provided by: postgresql-doc-9.5_9.5.25-0ubuntu0.16.04.1_all 

NAME
SPI_prepare_cursor - prepare a statement, without executing it yet
SYNOPSIS
SPIPlanPtr SPI_prepare_cursor(const char * command, int nargs,
Oid * argtypes, int cursorOptions)
DESCRIPTION
SPI_prepare_cursor is identical to SPI_prepare, except that it also allows specification of the planner's
“cursor options” parameter. This is a bit mask having the values shown in nodes/parsenodes.h for the
options field of DeclareCursorStmt. SPI_prepare always takes the cursor options as zero.
ARGUMENTS
const char * command
command string
int nargs
number of input parameters ($1, $2, etc.)
Oid * argtypes
pointer to an array containing the OIDs of the data types of the parameters
int cursorOptions
integer bit mask of cursor options; zero produces default behavior
RETURN VALUE
SPI_prepare_cursor has the same return conventions as SPI_prepare.
NOTES
Useful bits to set in cursorOptions include CURSOR_OPT_SCROLL, CURSOR_OPT_NO_SCROLL,
CURSOR_OPT_FAST_PLAN, CURSOR_OPT_GENERIC_PLAN, and CURSOR_OPT_CUSTOM_PLAN. Note in particular that
CURSOR_OPT_HOLD is ignored.
PostgreSQL 9.5.25 2021 SPI_PREPARE_CURSOR(3)