Move a cursor
void SPI_cursor_move(Portal portal, bool forward, long count)
SPI_cursor_move skips over some number of rows in a cursor. This is equivalent to a subset of the SQL command MOVE (see SPI_scroll_cursor_move for more functionality).
Portal portal
portal containing the cursor
bool forward
true for move forward, false for move backward
long count
maximum number of rows to move
Moving backward may fail if the cursor's plan was not created with the CURSOR_OPT_SCROLL option.