我想统计接口的数量,并写出这个代码,它们从两个表节点和接口中统计出来。此代码有效,但我想知道其他方式或优化此代码?数数的最佳方法是什么?如何优化我的查询?
SELECT
q1.NodeName,
q1.Nup as up,
q2.ndown as down
FROM (
SELECT
Nodes.NodeID AS NodeID,
Interfaces.NodeID AS InterfaceID,
Nodes.Caption AS NodeName,
Interfaces.Status as Status,
Count(Nodes.Caption) as Nup
FROM
Nodes INNER JOIN Interfaces ON (Nodes.NodeID = Interfaces.NodeID)
WHERE
(
(
(Interfaces.Status = '2'))
)
GROUP BY Nodes.NodeID, Nodes.Caption, Interfaces.Status, Interfaces.NodeID
) AS q1
INNER JOIN (
SELECT
Interfaces.NodeID AS InterfaceID,
Nodes.Caption AS NodeName,
Interfaces.Status as Status,
Count(Nodes.Caption) as ndown
FROM
Nodes INNER JOIN Interfaces ON (Nodes.NodeID = Interfaces.NodeID)
WHERE
(
(
(Interfaces.Status = '1'))
)
GROUP BY Nodes.NodeID, Nodes.Caption, Interfaces.Status, Interfaces.NodeID
) AS q2
ON (q1.NodeID = q2.InterfaceID)
order by down Desc
你有什么指数?你的桌子结构是什么? – JNK 2011-03-04 20:10:31
哪个SQL ... SQL-Server,Oracle,MySQL ??? – DRapp 2011-03-04 20:11:56
sql server 2005 – user453949 2011-03-05 05:10:13