SPI_cursor_fetch
Name
SPI_cursor_fetch -- fetch some rows from a cursor
Synopsis
void SPI_cursor_fetch(Portal portal, bool forward, long count)
Description
   SPI_cursor_fetch fetches some rows from a
   cursor.  This is equivalent to a subset of the SQL command
   FETCH (see SPI_scroll_cursor_fetch
   for more functionality).
  
Arguments
- Portal portal
-       portal containing the cursor
      
- bool forward
-       true for fetch forward, false for fetch backward
      
- long count
-       maximum number of rows to fetch
      
Return Value
   SPI_processed and
   SPI_tuptable are set as in
   SPI_execute if successful.
  
Notes
   Fetching backward may fail if the cursor's plan was not created
   with the CURSOR_OPT_SCROLL option.