Question

SQL Server 2016升级顾问报告数据库兼容性问题：规则：在90或更高版本的兼容模式下，ORDER BY子句中不允许使用常量表达式。

Version90 规则标题：在90或更高版本的兼容模式下，ORDER BY子句中不允许使用常量表达式

建议：在将数据库兼容性模式更改为90或更高版本之前，请修改在ORDER BY子句中使用常量表达式的语句以使用列名或列别名，或使用表示名称或别名位置的非负整数选择列表。

规则ID：Microsoft.Rules.Data.Upgrade.UR00326

这是导致错误的SQL，我无法弄清楚如何更改Order By语句以满足升级顾问程序???

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [Utilities].[GetProcStats] (@order varchar(100) = 'use')
AS
BEGIN
WITH GetQueryStats
( plan_handle,
  total_elapsed_time,
  total_logical_reads,
  total_logical_writes,
  total_physical_reads )
AS
( SELECT qs.plan_handle,
     SUM(qs.total_elapsed_time)   AS total_elapsed_time,
     SUM(qs.total_logical_reads)  AS total_logical_reads,
     SUM(qs.total_logical_writes) AS total_logical_writes,
     SUM(qs.total_physical_reads) AS total_physical_reads
    FROM sys.dm_exec_query_stats qs
   GROUP BY qs.plan_handle )
SELECT DB_NAME(st.dbid) AS database_name,
       OBJECT_SCHEMA_NAME(st.objectid, st.dbid) AS schema_name,
       OBJECT_NAME(st.objectid, st.dbid) AS proc_name,
       SUM(cp.usecounts) AS use_counts,
       SUM(cp.size_in_bytes) AS size_in_bytes,
       SUM(qs.total_elapsed_time) AS total_elapsed_time,
      CAST( SUM(qs.total_elapsed_time) AS decimal(38, 4)) / SUM(cp.usecounts) AS avg_elapsed_time_per_use,
       SUM(qs.total_logical_reads) AS total_logical_reads,
      CAST(SUM(qs.total_logical_reads) AS decimal(38, 4)) / SUM(cp.usecounts) AS avg_logical_reads_per_use,
       SUM(qs.total_logical_writes) AS total_logical_writes,
      CAST(SUM(qs.total_logical_writes) AS decimal(38, 4)) / SUM(cp.usecounts) AS avg_logical_writes_per_use,
       SUM(qs.total_physical_reads) AS total_physical_reads,
      CAST(SUM(qs.total_physical_reads) AS decimal(38, 4)) / SUM(cp.usecounts) AS avg_physical_reads_per_use,
      st.text
  FROM sys.dm_exec_cached_plans cp
   CROSS APPLY sys.dm_exec_sql_text(cp.plan_handle) st
   INNER JOIN GetQueryStats qs ON cp.plan_handle = qs.plan_handle
   INNER JOIN sys.procedures p ON st.objectid = p.object_id
  WHERE p.type IN ('P', 'PC')
  GROUP BY st.dbid, st.objectid, st.text
  ORDER BY
     CASE @order
       WHEN 'name' THEN OBJECT_NAME(st.objectid)
       WHEN 'size' THEN SUM(cp.size_in_bytes)
       WHEN 'read' THEN SUM(qs.total_logical_reads)
       WHEN 'write' THEN SUM(qs.total_logical_writes)
     ELSE SUM(cp.usecounts)
END DESC;
END;

我尝试根据建议将ORDER BY更改为以下内容。

ORDER BY 案件当@order ='name'THEN OBJECT_NAME（st.objectid，st.dbid）当@order ='size'那么SUM（cp.size_in_bytes）当@order ='读'那么SUM（qs.total_logical_reads）当@order ='写'那么SUM（qs.total_logical_writes） ELSE SUM（cp.usecounts） END DESC;

但SQL Server 2016升级顾问仍会报告同样的问题。

Answer 1

您不能再在Order By子句中使用变量。

Sql Server 2008: Strange error in stored procedure

有一个可能的解决方案

SQL Server 2016升级顾问问题

1 个答案: