SPI_cursor_move
Name
SPI_cursor_move -- move a cursor
Synopsis
void SPI_cursor_move(Portal portal, bool forward, long count)
描述
SPI_cursor_move skips over some number of rows
in a cursor. This is equivalent to a subset of the SQL command
MOVE (see SPI_scroll_cursor_move
for more functionality).
参数
- Portal portal
portal containing the cursor
- bool forward
true for move forward, false for move backward
- long count
maximum number of rows to move
注解
Moving backward may fail if the cursor's plan was not created
with the CURSOR_OPT_SCROLL option.