本文介绍了如何使用 TOP 检索查询的总行数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个 SQL Server 2008 查询
I have a SQL Server 2008 query
SELECT TOP 10 *
FROM T
WHERE ...
ORDER BY ...
我还想获得总行数.obious 方法是进行第二次查询
I'd like to get also the total number of the rows. The obious way is to make a second query
SELECT COUNT(*)
FROM T
WHERE ...
ORDER BY ...
有什么有效的方法吗?
谢谢
推荐答案
您想要第二个查询吗?
SELECT TOP 10
*, foo.bar
FROM
T
CROSS JOIN
(SELECT COUNT(*) AS bar FROM T WHERE ...) foo
WHERE
...
ORDER BY
...
或
DECLARE @bar int
SELECT @bar = COUNT(*) AS bar FROM T WHERE ...
SELECT TOP 10
*, @bar
FROM
T
CROSS JOIN
(SELECT COUNT(*) AS bar FROM T WHERE ...) foo
WHERE
...
ORDER BY
...
或(使用 WITH)
WITH cTotal AS
(
SELECT COUNT(*) AS bar FROM T WHERE ...)
)
SELECT TOP 10
*, cTotal .bar
FROM
T
WHERE
...
ORDER BY
...
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