介绍

统计多个 SQL Server 实例上多个数据库的表大小、最后修改时间和行数，可以使用以下的 SQL 查询来获取这些信息。

脚本

示例脚本：

DECLARE @Query NVARCHAR(MAX)

-- 创建一个临时表用于存储结果
CREATE TABLE #TableSizes
(
    DatabaseName NVARCHAR(255),
    SchemaName NVARCHAR(255),
    TableName NVARCHAR(255),
    RowCount BIGINT,
    TotalSpaceUsedMB DECIMAL(18,2),
    LastModifiedDateTime DATETIME
)

-- 构建动态SQL查询
SET @Query = ''

-- 获取数据库列表
SELECT @Query = @Query + 
    'USE [' + name + ']; ' +
    'INSERT INTO #TableSizes ' +
    'SELECT ' + QUOTENAME(name, '''') + ' AS DatabaseName, ' +
            'SCHEMA_NAME(schema_id) AS SchemaName, ' +
            't.name AS TableName, ' +
            'SUM(p.rows) AS RowCount, ' +
            'CONVERT(DECIMAL(18,2), SUM(a.total_pages) * 8 / 1024.0) AS TotalSpaceUsedMB, ' +
            'MAX(last_user_update) AS LastModifiedDateTime ' +
    'FROM ' + QUOTENAME(name) + '.sys.tables t ' +
    'INNER JOIN ' + QUOTENAME(name) + '.sys.indexes i ON t.object_id = i.object_id ' +
    'INNER JOIN ' + QUOTENAME(name) + '.sys.partitions p ON i.object_id = p.object_id AND i.index_id = p.index_id ' +
    'INNER JOIN ' + QUOTENAME(name) + '.sys.allocation_units a ON p.partition_id = a.container_id ' +
    'WHERE t.is_ms_shipped = 0 ' +
    'GROUP BY t.name, SCHEMA_NAME(schema_id); '
FROM sys.databases
WHERE database_id > 4  -- Exclude system databases

-- 执行查询
EXEC sp_executesql @Query

-- 查询结果
SELECT * FROM #TableSizes

-- 删除临时表
DROP TABLE #TableSizes

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