Question

我试图在每次执行时选择并将X行插入到临时表中，我已经对行进行了编号。但是，我尝试使用PERCENT和TOP但没有得到满意的结果。

注意：我并不是要在特定数字之间获取特定行数。我只需要获得一个修正号码，如果可用行数低于选择请求，那么得到更少但不要超过。

我分配了这样的行号：

WITH GetRecordByIncrement AS ( SELECT [RowNumber] = ROW_NUMBER() OVER (ORDER BY UserID ASC) ,[Column1] ,[Column2] ,[Column3] FROM MySchema.MyTable )

我如何获得，例如：100行或更少行？使用行号时无效。

Answer 1

这样的事情会起作用：

DECLARE @table TABLE ( c1 INT, c2 INT, c3 INT );

;
WITH    MyRows
          AS ( SELECT TOP 100
                        ROW_NUMBER() OVER ( ORDER BY message_id ) AS RowNum ,
                        message_id ,
                        severity
               FROM     sys.messages
             )
    INSERT  INTO @Table
            ( c1 ,
              c2 ,
              c3
            )
            SELECT  RowNum ,
                    message_id ,
                    severity
            FROM    MyRows;

SELECT  *
FROM    @table;

Answer 2

试试这个：



WITH GetRecordByIncrement AS
(
SELECT
     [RowNumber] = ROW_NUMBER() OVER (ORDER BY UserID ASC)
    ,[Column1]
    ,[Column2]
    ,[Column3]
     FROM MySchema.MyTable
)
select * from GetRecordByIncrement  where [RowNumber]<=desirednumber

WITH GetRecordByIncrement AS ( SELECT [RowNumber] = ROW_NUMBER() OVER (ORDER BY UserID ASC) ,[Column1] ,[Column2] ,[Column3] FROM MySchema.MyTable ) select * from GetRecordByIncrement where [RowNumber]<=desirednumber

如果X行数不可用，则选择X行数或更低行数

2 个答案: