SQL Server 快速獲取表的行數
阿新 • • 發佈:2019-02-20
統計表的行數,這個大家都知道使用select count(*) from table ,但是隨著表的增長,這個統計的效率越來越低了。
試下下面的語句吧,能快速獲取多少行,還能提供一些其他表資訊,如索引型別,分割槽數等
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED -- 快速獲取表資訊. SELECT Object_schema_name(p.object_id) AS [Schema], Object_name(p.object_id) AS [Table], i.name AS [Index], p.partition_number, p.rows AS [Row Count], i.type_desc AS [Index Type] FROM sys.partitions p INNER JOIN sys.indexes i ON p.object_id = i.object_id AND p.index_id = i.index_id WHERE Object_schema_name(p.object_id) <> 'sys' -- AND Object_name(p.object_id) = 'table_1' --獲取某個表 ORDER BY [Schema], [Table], [Index]