我想知道游标的一般替换是什么。我看到的游标的一般实现是
DECLARE @variable INT, @sqlstr NVARCHAR(MAX)
DECLARE cursor_name CURSOR
FOR select_statement --essentially to get an array for @variable
--usually it's a subset of unique ids for accounts, clients, parts, etc
OPEN cursor_name
FETCH NEXT FROM cursor_name INTO @variable
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sqlstr = N'
/* some query that uses '+ str(@variable) +' to do dirty work
such as: go through all our accounts, if it''s some subset (possible new cursor),
go through those accounts and connect this …