sqlserver怎么查询所有表数据量

要查询所有表的数据量，可以使用以下SQL查询:

SELECT 
    t.NAME AS TableName,
    SUM(p.rows) AS RowCounts
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
WHERE 
    i.index_id <= 1
GROUP BY 
    t.NAME
ORDER BY 
    SUM(p.rows) DESC;

这条查询会返回所有表的名称以及每个表的数据量。