Question

到目前为止，我已经在stackoverflow上看到了这个问题的解决方案，每个问题似乎都有所不同。所以我决定开一个新问题。

我的目标是使用递增伤害创建一个等级列......

SET @rownum := 0;

SELECT rank, damage, playerID FROM (
                        SELECT @rownum := @rownum + 1 AS rank, damage, playerID
                        FROM PlayerStats WHERE playerID > 20130000000000 ORDER BY damage DESC, modified ASC
                    ) as result WHERE playerID='20130000000004'

但是，它会在“字段列表”中报告“未知列”损坏

"playerID","ancientBossID","damage","eventEnergy"

"20130000000004","2012000000000382","19033","38"
"20130000000078","2012000000000019","0","30"
"20130000000066","2012000000000242","0",30"
"20130000000080","2012000000000024","270","25"
"20130000000041","2012000000000133","5808","2"
"20130000000071","2012000000000030","694","30"
"20130000000055","2012000000000189","0","30"

Answer 1

SELECT rank, damage, playerID,modified FROM (
                        SELECT ROW_NUMBER() over(ORDER BY damage DESC, modified ASC)  AS rank, damage, playerID,modified
                        FROM PlayerStats WHERE playerID > 20130000000000 
                    ) as result WHERE playerID='20130000000004'

Answer 2

以下是您的化妆品更改查询，主要是在子查询中初始化@rownum

SELECT rank, damage, playerID 
FROM 
(
  SELECT @rownum := @rownum + 1 rank, damage, playerID
    FROM PlayerStats, (SELECT @rownum := 0) n
   WHERE playerID > 20130000000000 
   ORDER BY damage DESC, modified
) r 
-- WHERE playerID='20130000000004'
ORDER BY rank

它完美无缺。这是 SQLFiddle 演示。

已在列中的字段列表中的未知列

2 个答案: