sqlserver查看库中表的相关信息(表大小、行数、空间等)

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最新推荐文章于 2025-06-24 17:37:01 发布

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分类专栏：运维类数据库文章标签： sqlserver sqlserver表记录行数 sqlserver表空间信息

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本文提供两种SQL查询技巧，一是如何查询数据库中各表的大小、已用空间、未用空间等详细信息；二是如何快速获取所有表名及其对应的行数，帮助数据库管理员高效管理数据库资源。

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一、查看库中各表大小及行数等信息

SELECT 
    t.NAME AS TableName,
    s.Name AS SchemaName,
    p.rows AS RowCounts,
    SUM(a.total_pages) * 8 AS TotalSpaceKB, 
    CAST(ROUND(((SUM(a.total_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS TotalSpaceMB,
    SUM(a.used_pages) * 8 AS UsedSpaceKB, 
    CAST(ROUND(((SUM(a.used_pages) * 8) / 1024.00), 2) AS NUMERIC(36, 2)) AS UsedSpaceMB, 
    (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB,
    CAST(ROUND(((SUM(a.total_pages) - SUM(a.used_pages)) * 8) / 1024.00, 2) AS NUMERIC(36, 2)) AS UnusedSpaceMB
FROM 
    [OES].sys.tables t
INNER JOIN      
    [OES].sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN 
    [OES].sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN 
    [OES].sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN 
    [OES].sys.schemas s ON t.schema_id = s.schema_id
WHERE 
    t.NAME NOT LIKE 'dt%' 
    AND t.is_ms_shipped = 0
    AND i.OBJECT_ID > 255 
GROUP BY 
    t.Name, s.Name, p.Rows
ORDER BY 
    t.Name;

参考结果：

二、查询数据库中所有的表名及对应行数

SELECT   a.name, b.rows
FROM      sys.sysobjects AS a INNER JOIN
                sys.sysindexes AS b ON a.id = b.id
WHERE   (a.type = 'u') AND (b.indid IN (0, 1))
ORDER BY b.rows DESC

参考结果：