Question

是否可以编写sql查询（在mssql中），返回给定范围内的小数（每个都在单独的行中）？ e.g。

Answer 1

不确定你想要什么

declare @start int=11;
declare @end int=26;

with cte as(
select @start as col union all
select COL+1 from cte where col+1<=@end)

select * from cte

Answer 2

使用Itzik Ben-Gan's technique（这将为您提供最多4,294,967,296的数字）来生成数字表：

WITH
    L0   AS(SELECT 1 AS c UNION ALL SELECT 1),
    L1   AS(SELECT 1 AS c FROM L0 AS A CROSS JOIN L0 AS B),
    L2   AS(SELECT 1 AS c FROM L1 AS A CROSS JOIN L1 AS B),
    L3   AS(SELECT 1 AS c FROM L2 AS A CROSS JOIN L2 AS B),
    L4   AS(SELECT 1 AS c FROM L3 AS A CROSS JOIN L3 AS B),
    L5   AS(SELECT 1 AS c FROM L4 AS A CROSS JOIN L4 AS B),
    Nums AS(SELECT ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) AS n FROM L5)
SELECT n FROM Nums WHERE n between 11 and 20

sql中给定范围的小数

2 个答案: