Question

我试图调用sp_spaceused来获取我要监控的几个特定表中的行数，但我试图避免使用游标。

我已经制作了一张桌子来容纳我想要监控的所有桌子：

CREATE TABLE MonitoredTable 
(
    MonitoredTableID INT PRIMARY KEY IDENTITY(1, 1) NOT NULL
  , DatabaseName NVARCHAR(128) NOT NULL
  , SchemaName NVARCHAR(128) NOT NULL
  , TableName NVARCHAR(128) NOT NULL
  , RowNumberThreshold INT NOT NULL
  , IsActive BIT NOT NULL
)

我的问题是：我想创建一个函数，仅返回{1}}表，其行数超过定义的MonitoredTableID。

以下是我想做的事情，但这是无效的SQL ：

RowNumberThreshold

有没有办法可以检查CREATE FUNCTION dbo.GetTablesLargerThanThreshold() RETURNS @tablesLargerThanThreshold TABLE ( MonitoredTableID INT NOT NULL ) AS BEGIN INSERT INTO @tablesLargerThanThreshold SELECT MonitoredTableID FROM MonitoredTable WHERE IsActive = 1 AND (SELECT [rows] FROM (EXEC sp_spaceused DatabaseName + '.' + SchemaName + '.' + TableName)) > RowNumberThreshold RETURN END中rows的数量是否大于定义的MonitoredTable而不诉诸游标？

Answer 1

这样的东西？

-- See the following pages for documentation on the tables used in this query:
--
-- sys.indexes              https://msdn.microsoft.com/en-us/library/ms173760.aspx
-- sys.partitions           https://msdn.microsoft.com/en-us/library/ms175012.aspx
-- sys.allocation_units     https://msdn.microsoft.com/en-us/library/ms189792.aspx
-- sys.tables               Only columns inherited from sys.object, see link below
-- sys.object               https://msdn.microsoft.com/en-us/library/ms190324.aspx
SELECT OBJECT_NAME(i.OBJECT_ID) AS [TableName]
     , p.[rows] AS [Num_Rows]
FROM sys.indexes AS i
    INNER JOIN sys.partitions AS p 
        ON p.OBJECT_ID = i.OBJECT_ID 
       AND p.index_id = i.index_id
    INNER JOIN sys.allocation_units AS a 
        ON a.container_id = p.partition_id
    INNER JOIN sys.tables AS t 
        ON i.OBJECT_ID = t.OBJECT_ID
WHERE i.type <= 1 -- Heap or clustered index
  AND a.type = 1 -- In-row data
  AND t.type = 'U' -- User-defined table
  AND t.is_ms_shipped = 0 -- sys.object was not created by an internal SQL Server component

如何在特定表上使用sp_spaceused？

1 个答案: