Найти самые большие таблицы данных в базе

SQL

USE Viatec_UT_mamch;

SELECT TOP 20
    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 / 1024.0, 2) AS NUMERIC(36,2)) AS TotalSpaceMB,
    SUM(a.used_pages)   * 8                       AS UsedSpaceKB,
    CAST(ROUND(SUM(a.used_pages)   * 8 / 1024.0, 2) AS NUMERIC(36,2)) AS UsedSpaceMB,
    SUM(a.data_pages)   * 8                       AS DataSpaceKB,
    CAST(ROUND(SUM(a.data_pages)   * 8 / 1024.0, 2) AS NUMERIC(36,2)) AS DataSpaceMB
FROM
    sys.tables t
INNER JOIN sys.indexes i        ON t.OBJECT_ID = i.object_id
INNER JOIN sys.partitions p     ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN 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
    TotalSpaceMB DESC;

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