SPI_scroll_cursor_move — move a cursor
void SPI_scroll_cursor_move(Portalportal, FetchDirectiondirection, longcount)
SPI_scroll_cursor_move skips over some number of rows
in a cursor. This is equivalent to the SQL command
MOVE.
Portal portalportal containing the cursor
FetchDirection direction
one of FETCH_FORWARD,
FETCH_BACKWARD,
FETCH_ABSOLUTE or
FETCH_RELATIVE
long count
number of rows to move for
FETCH_FORWARD or
FETCH_BACKWARD; absolute row number to move to for
FETCH_ABSOLUTE; or relative row number to move to for
FETCH_RELATIVE
SPI_processed is set as in
SPI_execute if successful.
SPI_tuptable is set to NULL, since
no rows are returned by this function.
See the SQL FETCH command
for details of the interpretation of the
direction and
count parameters.
Direction values other than FETCH_FORWARD
may fail if the cursor's plan was not created
with the CURSOR_OPT_SCROLL option.