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PostgreSQL 8.4.22 Documentation
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SPI_scroll_cursor_fetch

Name

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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