sql - sp_spaceused - 如何测量 SQL 中所有表的大小(以 GB 为单位)

Question

继How to measure table size in GB in a table in SQL中的讨论之后，我正在寻找一种解决方案来使用存储过程 sp_spaceused 单独测量 SQL Server 的所有表所使用的空间。

Answer 1

以下基本查询有效。它使用相同的算法获得与 sp_spaceused 相同的输出，但效率更高。请不要使用CURSOR + sp_spaceused方法；绝对没有理由这样做。使用 sp_spaceused 的一个潜在问题是，它旨在成为一个报告过程，因此输出都是文本，而不是实际数字，并且将其解析回数字可能容易出错。

最好不要使用 sys.tables 或 sp_msforeachtable，因为它们都排除索引 View 。

以下内容与 sp_spaceused 方面完全相同:

• 包括 XML 索引、全文索引、索引 View 等。
• 详细列出所用数据与索引空间的信息

如果您需要它适用于所有数据库，它也可以轻松适应。

如果您需要按索引分割这些数据，我已调整以下查询来回答 DBA.StackExchange 上的此问题:space usage on sys.allocation_units and sp_spaceused

;WITH extra AS
(   -- Get info for FullText indexes, XML Indexes, etc
    SELECT  sit.[object_id],
            sit.[parent_id],
            ps.[index_id],
            SUM(ps.reserved_page_count) AS [reserved_page_count],
            SUM(ps.used_page_count) AS [used_page_count]
    FROM    sys.dm_db_partition_stats ps
    INNER JOIN  sys.internal_tables sit
            ON  sit.[object_id] = ps.[object_id]
    WHERE   sit.internal_type IN
               (202, 204, 207, 211, 212, 213, 214, 215, 216, 221, 222, 236)
    GROUP BY    sit.[object_id],
                sit.[parent_id],
                ps.[index_id]
), agg AS
(   -- Get info for Tables, Indexed Views, etc (including "extra")
    SELECT  ps.[object_id] AS [ObjectID],
            ps.index_id AS [IndexID],
            SUM(ps.in_row_data_page_count) AS [InRowDataPageCount],
            SUM(ps.used_page_count) AS [UsedPageCount],
            SUM(ps.reserved_page_count) AS [ReservedPageCount],
            SUM(ps.row_count) AS [RowCount],
            SUM(ps.lob_used_page_count + ps.row_overflow_used_page_count)
                    AS [LobAndRowOverflowUsedPageCount]
    FROM    sys.dm_db_partition_stats ps
    GROUP BY    ps.[object_id],
                ps.[index_id]
    UNION ALL
    SELECT  ex.[parent_id] AS [ObjectID],
            ex.[object_id] AS [IndexID],
            0 AS [InRowDataPageCount],
            SUM(ex.used_page_count) AS [UsedPageCount],
            SUM(ex.reserved_page_count) AS [ReservedPageCount],
            0 AS [RowCount],
            0 AS [LobAndRowOverflowUsedPageCount]
    FROM    extra ex
    GROUP BY    ex.[parent_id],
                ex.[object_id]
), spaceused AS
(
SELECT  agg.[ObjectID],
        OBJECT_SCHEMA_NAME(agg.[ObjectID]) AS [SchemaName],
        OBJECT_NAME(agg.[ObjectID]) AS [TableName],
        SUM(CASE
                WHEN (agg.IndexID < 2) THEN agg.[RowCount]
                ELSE 0
            END) AS [Rows],
        SUM(agg.ReservedPageCount) * 8 AS [ReservedKB],
        SUM(agg.LobAndRowOverflowUsedPageCount +
            CASE
                WHEN (agg.IndexID < 2) THEN (agg.InRowDataPageCount)
                ELSE 0
            END) * 8 AS [DataKB],
        SUM(agg.UsedPageCount - agg.LobAndRowOverflowUsedPageCount -
            CASE
                WHEN (agg.IndexID < 2) THEN agg.InRowDataPageCount
                ELSE 0
            END) * 8 AS [IndexKB],
        SUM(agg.ReservedPageCount - agg.UsedPageCount) * 8 AS [UnusedKB],
        SUM(agg.UsedPageCount) * 8 AS [UsedKB]
FROM    agg
GROUP BY    agg.[ObjectID],
            OBJECT_SCHEMA_NAME(agg.[ObjectID]),
            OBJECT_NAME(agg.[ObjectID])
)
SELECT sp.SchemaName,
       sp.TableName,
       sp.[Rows],
       sp.ReservedKB,
       (sp.ReservedKB / 1024.0 / 1024.0) AS [ReservedGB],
       sp.DataKB,
       (sp.DataKB / 1024.0 / 1024.0) AS [DataGB],
       sp.IndexKB,
       (sp.IndexKB / 1024.0 / 1024.0) AS [IndexGB],
       sp.UsedKB AS [UsedKB],
       (sp.UsedKB / 1024.0 / 1024.0) AS [UsedGB],
       sp.UnusedKB,
       (sp.UnusedKB / 1024.0 / 1024.0) AS [UnusedGB],
       so.[type_desc] AS [ObjectType],
       so.[schema_id] AS [SchemaID],
       sp.ObjectID
FROM   spaceused sp
INNER JOIN sys.all_objects so
        ON so.[object_id] = sp.ObjectID
WHERE so.is_ms_shipped = 0
--AND so.[name] LIKE N''  -- optional name filter
--ORDER BY ??