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SPI_scroll_cursor_fetch

SPI_scroll_cursor_fetch
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SPI_scroll_cursor_fetch

SPI_scroll_cursor_fetch - fetch some rows from a cursor

Synopsis 

void SPI_scroll_cursor_fetch(Portal portal, FetchDirection direction,
                             long count)

Description

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 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.

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