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).
- Portal portal
portal containing the cursor
- bool forward
true for fetch forward, false for fetch backward
- long count
maximum number of rows to fetch
Fetching backward may fail if the cursor's plan was not created with the CURSOR_OPT_SCROLL option.