MSSQL查看表大小占用分析（mssql查看大小占用）

MSSQL查看表大小占用分析，是指查看SQL Server数据库中表占用空间大小，以便发现和分析存放、索引、事务日志、锁定信息与表最近操作等。这不仅仅可以通过查看表的大小来决定如何优化数据库，还有助于更好的规划存储空间、提供比较可靠的预测数据库的发展趋势，进而更好地提高数据库的性能。

要查看MSSQL表大小占用分析，可以使用如下语句：

–查询表所有数据的大小(单位:字节)

SELECT object_name(object_id) as table_name, SUM (reserved_page_count * 8) AS size_in_kb

FROM sys.dm_db_partition_stats

WHERE index_id IN (0,1)

GROUP BY object_id

–查询表数据和索引大小(单位:字节)

SELECT object_name(t.object_id) AS table_name,

SUM(CONVERT(BIGINT,p.row_count)) * Max_record_size_in_bytes AS rows_size_in_bytes,

SUM(i.used_page_count) * 8 as index_size_in_bytes

FROM sys.partitions p JOIN sys.tables t ON p.OBJECT_ID = t.OBJECT_ID .

LEFT OUTER JOIN sys.dm_db_partition_stats i

on i.OBJECT_ID = t.OBJECT_ID and p.index_id = i.index_id

GROUP BY t.object_id

此外，可以使用T-SQL图形化查看表大小占用分析：

–查询表和索引大小

SELECT t.name as ‘Table Name’,

(p.used_page_count) * 8.0 / 1024 AS ‘TableSize(KB)’,

(i.used_page_count) * 8.0 / 1024 AS ‘IndexSize(KB)’

FROM sys.tables t

JOIN sys.partitions p ON t.object_id = p.object_id

LEFT OUTER JOIN sys.dm_db_partition_stats i

ON t.object_id = i.OBJECT_ID AND

p.index_id = i.index_id

GROUP BY t.name, p.used_page_count, i.used_page_count

ORDER BY [TableSize(KB)] DESC

通过以上查看方法，不仅可以查看每张表的大小，还可以分析索引、数据、事务日志等其他相关信息对数据表的影响，去更好的规划存储空间，提高数据库的性能。