SPI_scroll_cursor_fetch3
Fetch some rows from a cursor
Usage
void SPI_scroll_cursor_fetch(Portal portal, FetchDirection direction,
long count)
Overview
SPI_scroll_cursor_fetch fetches some rows from a cursor. This is equivalent to the SQL command FETCH.
Arguments
Portal portal
portal containing the cursor
FetchDirection direction
one of FETCH_FORWARD, FETCH_BACKWARD, FETCH_ABSOLUTE or FETCH_RELATIVE
long count
number of rows to fetch for FETCH_FORWARD or FETCH_BACKWARD; absolute row number to fetch for FETCH_ABSOLUTE; or relative row number to fetch for FETCH_RELATIVE
Return value
SPI_processed and SPI_tuptable are set as in SPI_execute if successful.
Notes
See the SQL FETCH(7) command for details of the interpretation of the direction and count parameters.
Direction values other than FETCH_FORWARD may fail if the cursor's plan was not created with the CURSOR_OPT_SCROLL option.