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mysql数据库中某项其中一个值在该项排第几,百分几

2024-07-10 20:37:47   224人阅读

 

SQL 如下:

 sql 1.

SELECT X.USER_ID, X.TOTAL_NO, X.ORDER_NO, X.ORDER_NO / X.TOTAL_NO AS PERCENTAGE_NOFROM (SELECT @rowNum := @rowNum + 1 AS ORDER_NO, @rowCount AS TOTAL_NO, USER_ID    FROM T_SD_USER, (SELECT @rowNum := 0        ) b, (SELECT @rowCount := (                SELECT COUNT(*)                FROM T_SD_USER                )        ) c    ORDER BY USER_ID DESC    ) XWHERE USER_ID = 3008

 

sql2.

SELECT X.COMMENT_ID, X.TOTAL_NO, ORDER_NO, IFNULL(X.ORDER_NO / X.TOTAL_NO, 1) AS PERCENTAGE_NOFROM (SELECT @rowNum := @rowNum + 1 AS ORDER_NO, @rowCount AS TOTAL_NO, t.COMMENT_ID, t.COMMENT_SPENDING    FROM T_SD_COMMENT t, (SELECT @rowNum := 0        ) b, (SELECT @rowCount := (                SELECT COUNT(*)                FROM T_SD_COMMENT                WHERE to_days(CREATE_TIME) >= to_days(now())                )        ) c    ORDER BY CREATE_TIME DESC    ) XWHERE COMMENT_ID = 15

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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