SQL While循环60秒？

Question

我基本上是在尝试捕捉sql命令及其对CPU的等待时间，我只想运行一个60秒的while循环，并将所有数据插入到一个临时表中。我不是很好当游标，或者如何在SQL中完成这一个。

BEGIN
   CREATE TABLE #DiagTable
   (
      sessionID          NVARCHAR (MAX),
      dbname             NVARCHAR (MAX),
      starttime          NVARCHAR (MAX),
      cmd                NVARCHAR (MAX),
      stat               NVARCHAR (MAX),
      cputime            NVARCHAR (MAX),
      totalelapsedtime   NVARCHAR (MAX),
      reads              NVARCHAR (MAX),
      writes             NVARCHAR (MAX),
      [query]            NVARCHAR (MAX)
   )

   DECLARE @id   INT



   DECLARE
      x CURSOR FOR
         SELECT 60

   OPEN x

   FETCH NEXT FROM x   INTO @id



   WHILE @@FETCH_STATUS = 0
   BEGIN
      WAITFOR DELAY '000:00:01'

      -- begin loop here
      INSERT INTO #DiagTable
         SELECT a.session_id,
                db_name (a.database_id) AS db_name,
                a.start_time,
                a.command,
                a.status,
                a.cpu_time,
                a.total_elapsed_time,
                a.reads,
                a.writes,
                b.text AS query
           FROM sys.dm_exec_requests a
                OUTER APPLY sys.dm_exec_sql_text (a.sql_handle) b
          WHERE a.session_id > 50               -- filter out background tasks
                                 AND a.session_id  @@spid -- filter out this query session
         ORDER BY a.cpu_time DESC;

      WAITFOR DELAY '00:00:01'

      FETCH NEXT FROM x   INTO @id
   END

   CLOSE x

   DEALLOCATE x

   -- end loop here
   SELECT * FROM #DiagTable;

   DROP TABLE #DiagTable;
END

Answer 1

要在一分钟内每秒钟执行脚本，您可以这样做

DECLARE @i INT = 1;

WHILE (@i <= 60)
 BEGIN
  WAITFOR DELAY '00:00:01'

       /*Your Script*/

 SET  @i = @i + 1;
END 

我将在临时表#diagtablesession int中添加另一列，并在该列中添加@I值，以跟踪每个循环插入的记录。