Select 语句 returns 错误的结果

Question

我有一个 returns 多列的子查询，里面有 row_number

当我尝试 select 只有两列时，它 returns 行号列中的错误结果

结果应该是

CheckKey	RowNum
1936	66
1936	81

但是 returns

CheckKey	RowNum
1936	66
1936	76

这是查询：

SELECT Z."CheckKey", Z."RowNum" FROM
                (SELECT 
                  X."Transaction Number", 
                  X."Debit", 
                  X."Credit", 
                  X."Balance", 
                  X."CardName", 
                  X."Memo", 
                  X."CheckNum",
                  X."CheckSum", 
                  X."Canceled", 
                  X."Account", 
                  X."RefDate", 
                  X."DueDate", 
                  X."CheckKey",
                  row_number() OVER (ORDER BY X."RefDate" DESC) "RowNum", 
                  CASE
                    WHEN (
                      X."StornoToTr" IS NOT NULL
                      AND X."Deposited" = 'C'
                    ) THEN 'Deposited'
                    WHEN X."Deposited" = 'N' THEN 'Canceled'
                    ELSE X."Status"
                  END "Status"
                FROM CheckKeys X)Z
            WHERE Z."CheckKey" = '1936'

Answer 1

正如asentx所说仅按 RefDate 排序，因此 RefDate 的相同值按随机顺序排序。这就是为什么当我按“交易编号”之类的顺序添加另一列时结果变得稳定的原因

谢谢大家

Select 语句 returns 错误的结果

Select Statement returns wrong results

sql

hana