查询Sql server Query执行COST T-SQL

很有用的一句SQL，可以查看每个查询语句占用CPU资源的情况，类似Activity Monitor

SELECT TOP 100

   total_worker_time/execution_count AS avg_cpu_cost, plan_handle,
   execution_count,
   (SELECT SUBSTRING(text, statement_start_offset/2 + 1,
      (CASE WHEN statement_end_offset = -1
         THEN LEN(CONVERT(nvarchar(max), text)) * 2
         ELSE statement_end_offset
      END - statement_start_offset)/2)
   FROM sys.dm_exec_sql_text(sql_handle)) AS query_text
FROM sys.dm_exec_query_stats
 --where execution_count>10000 and total_worker_time/execution_count>10000
ORDER BY execution_count desc
--[avg_cpu_cost] DESC