如何在SQL中找到包含WHERE子句的最大列值？

我正在尝试用SQL编写一个过程。 我想在将所有日期项与传递的输入参数匹配后，从表中打印具有“最大分数”的记录。 现在，代码只打印与指定日期对应的所有记录。 我不知道在这种情况下如何使用MAX（）

/* =========================================================
Procedure to find the Highest Movie Rating on a particular date.
Given, an inpDate (input Date) it first looks up all Movie Reviews
of that particular date.
Then, it checks a StandardizedReviews Table (sTbl) and
finds the MAXIMUM adjusted_score with the
Highest Review Score (the variable adjusted_score)
========================================================= */
Use StandardizedReviews
Drop Procedure if exists HighestReview;
GO

CREATE PROCEDURE HighestReview @inpDate DATE AS (
        SELECT sTbl.adjusted_score "Max Score"
        FROM dbo.StandardizedReviews sTbl
        WHERE CAST(sTbl.date as DATE) = CAST(@inpDate as DATE)
        GROUP BY sTbl.date, sTbl.adjusted_score
)
GO
exec HighestReview '2020-03-05'
GO

现在，我的输出如下所示：

但我希望它能显示100分的记录。

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谢谢。

您只需将调整后的分数值用MAX（）包装为“MAX score”，它将仅选择最高分数。您还将删除您的组中对sTbl.adjusted_score的引用，并且仅在日期之前按顺序删除：

CREATE PROCEDURE HighestReview @inpDate DATE AS (
    SELECT MAX(sTbl.adjusted_score) AS 'Max Score'
    FROM dbo.StandardizedReviews sTbl
    WHERE CAST(sTbl.Date AS DATE) = CAST(@inpDate AS DATE)
    GROUP BY sTbl.Date
)

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谢谢您。这就解决了问题。