如何从SQL Server 2005中的IndexId获取索引名称

Question

我正在运行以下查询来列出索引的大小和碎片:

SELECT object_name(object_id, database_id) as objectname), index_id, *
FROM sys.dm_db_index_usage_stats

是否有可用于转换index_id为索引名称的SQL函数？

Answer 1

我在这个页面上找到了一个可以帮助你的功能:

CREATE FUNCTION dbo.index_name (@object_id int, @index_id int)
RETURNS sysname
AS
BEGIN
  RETURN(SELECT name FROM sys.indexes WHERE object_id = @object_id and index_id = @index_id)
END; 

Answer 2

或者更好的是:

SELECT  OBJECT_NAME(d.object_id, d.database_id) AS objectname ,
        d.index_id ,
        i.name ,
        *
FROM    sys.dm_db_index_usage_stats AS d
        LEFT OUTER JOIN sys.indexes AS i ON i.object_id = d.object_id
                                            AND i.index_id = d.index_id