SQL Server中具有相同名称的多个表

当运行下面的查询时，我返回了一个重复的表，即使它只存在一个。为什么会这样

SELECT 
s.Name AS SchemaName,
t.NAME AS TableName,
p.rows AS RowCounts,
SUM(a.total_pages) * 8 AS TotalSpaceKB, 
SUM(a.used_pages) * 8 AS UsedSpaceKB, 
(SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB
FROM 
sys.tables t
INNER JOIN 
sys.schemas s ON s.schema_id = t.schema_id
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
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 
TotalSpaceKB DESC

**更新

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数据库名称显示了一个（恢复中）标记，我刚刚运行了一个脚本进行检查，它说已经完成了11%。这也会导致这个问题吗？

正如肖恩指出的，在重复的表上有多个索引。要检查索引名称，可以运行稍微修改的查询：

SELECT 
t.NAME AS TableName,
s.Name AS SchemaName,
p.rows AS RowCounts,
i.name,
SUM(a.total_pages) * 8 AS TotalSpaceKB, 
SUM(a.used_pages) * 8 AS UsedSpaceKB, 
(SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB
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, i.name
ORDER BY 
    t.name

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它没有返回任何重复项我执行的同一个查询在运行此查询时没有得到任何重复项您可能在

sys.partitions

表中有多个条目用于重复的表。不应该这样做，但大约一小时前它开始在我的数据库上返回重复项。我只是想知道这是否表明后台正在发生某些事情。是的，您正在从sys.index中进行选择。如果有多个索引，则每个索引都会有一行。