SPI_cursor_move
Name
SPI_cursor_move -- move a cursor
Synopsis
void SPI_cursor_move(Portal portal, bool forward, long count)
Description
   SPI_cursor_move skips over some number of rows
   in a cursor.  This is equivalent to the SQL command
   MOVE.
  
Arguments
- Portal portal
-       portal containing the cursor
      
- bool forward
-       true for move forward, false for move backward
      
- long count
-       maximum number of rows to move