查看慢sql语句

查看慢sql语句

SELECT TOP 20
    st.text AS SQL_Full                                        --父级完整语句
    ,SUBSTRING(st.text, (qs.statement_start_offset/2) + 1,
        ((CASE statement_end_offset 
        WHEN -1 THEN DATALENGTH(st.text)
        ELSE qs.statement_end_offset END 
        - qs.statement_start_offset)/2) + 1) as SQL_Part    --统计对应的部分语句
    , CAST( ((qs.total_elapsed_time / 1000000.0)/qs.execution_count) AS DECIMAL(28,2) ) AS [平均消耗秒数]
    , CAST(qs.last_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最后完成消耗秒数]
    , qs.last_execution_time AS [最后执行时间]
    , CAST(qs.min_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最小消耗秒数]
    , CAST(qs.max_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最大消耗秒数]
    , CAST(qs.total_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [总消耗秒数]
    , (qs.execution_count) AS [总执行次数]
    , creation_time AS [编译计划的时间]
    , CAST(qs.last_worker_time / 1000000.0 AS DECIMAL(28, 2)) AS [最后完成占用CPU秒数]
    , sql_handle
from sys.dm_exec_query_stats qs
    CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS st
ORDER BY qs.last_worker_time DESC