As in the topic. Can I simply reset cursor\'s position to the beginning in Transact-SQL, so it can run again over the table? I want to reset it in the following context:
Another option that can be used that doesn't force you to change the type of cursor is simply to close the cursor and re-open it:
CLOSE user_cursor
OPEN user_cursor
But the scroll option will be cheaper in terms of resource usage, if that's a change you can accept.
Use cursor loops and its taken care of for you...
cursor c_something IS
select * from somewhere
BEGIN
for some_row in c_something LOOP
-- do stuff with some_row.COLUMN;
END LOOP; -- this closes the cursor for you when it has gone all the way through
-- do other stuff
for some_row in c_something LOOP -- opens the cursor again from the top
-- do stuff with some_row.COLUMN;
END LOOP;
END;
you need to declare your cursor as scroll, like this
declare c scroll cursor for (select statement);
then at any time for locating to the first just use the following
fetch first from c;
The data retrieved by the cursor will not change.
STATIC
Defines a cursor that makes a temporary copy of the data to be used by the cursor. All requests to the cursor are answered from this temporary table in tempdb; therefore, modifications made to base tables are not reflected in the data returned by fetches made to this cursor, and this cursor does not allow modifications.