Sql server sql server中的组和计数

我想要一个简单的查询来获得一些输出。记录是

ID      Count
215     1
215     1
215     1
215     1

输出必须是

ID   Count
215  4

很简单,

SELECT ID ,COUNT(*) AS CNT
FROM TABLE_NAME
GROUP BY ID

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谢谢你。这是工作。那就把它作为答案吧<代码>计数=4是项目计数还是价值总和？

SELECT ID ,COUNT(*) AS CNT
FROM TABLE_NAME
GROUP BY ID

SELECT ID, sum(Count) AS Count
FROM tablename
GROUP BY ID