Question

有一个表格的值如下：

Sets | Reps
-----+------
2    | 10
3    | 15
3    | 12
4    | 8

我需要在SELECT语句中将这两个值组合成一个，所以我可以得到

SELECT ... AS Reps FROM Table

Reps
------------
10,10
15,15,15
12,12,12
8,8,8,8

任何想法如何做到这一点？

测试脚本：

DECLARE @Test TABLE ([Sets] INT, [Reps] INT);

INSERT INTO @Test VALUES (2, 10);
INSERT INTO @Test VALUES (3, 15);
INSERT INTO @Test VALUES (3, 12);
INSERT INTO @Test VALUES (4, 8);

SELECT [Sets], [Reps] FROM @Test;

// Here is an answer by tpdi:
SELECT CAST([Reps] AS VARCHAR) +
       REPLICATE(',' + CAST([Reps] AS VARCHAR), [Sets] - 1)
       AS [Reps] FROM @Test;

Answer 1

像这样：

select substring(replicate(','+cast(Reps as varchar),Sets),2,8000) as Reps
from Table

Answer 2

select cast（reps as varchar）+ replicate（'，'+ cast（reps as varchar），sets - 1）从表

Answer 3

选择SUBSTRING（REPLICATE（CAST（[Reps] as varchar）+'，'，[Sets]）， 0， LEN（REPER（CAST（[Reps] as varchar）+'，'，[Sets]）））作为[代表] 来自@Test

T-SQL用于将2列的值合并为一个带有“replicate”的值

3 个答案: