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.