声明@NoofRept int
从tbl_Name中选择id,Name,其中id = 1
id |Name
1 |XXXXXXX
我的要求 重复此记录@NoofRept时间
id |Name
1 |XXXXXXX
1 |XXXXXXX
1 |XXXXXXX
1 |XXXXXXX
答案 0 :(得分:0)
如果你想重复小于2047的记录你可以使用表Master..spt_values
,这是一个系统表,P类型的序号从0到2047:
DECLARE @NoofRept INT = 10
SELECT t.ID, t.Name
FROM tbl_Name t
CROSS JOIN Master..spt_Values v
WHERE t.ID = 1
AND v.Type = 'P'
AND v.Number BETWEEN 1 AND @NoofRept
<强> Example on SQL Fiddle 强>
如果您需要更多,那么您需要CROSS JOIN
个表来获取所需的行数:
SELECT ID, Name
FROM tbl_Name
CROSS JOIN
( SELECT rpt = ROW_NUMBER() OVER(ORDER BY a.Number)
FROM Master..spt_Values a
CROSS JOIN Master..spt_Values b
--CROSS JOIN Master..spt_values c
--CROSS JOIN Master..spt_values d
) v
WHERE ID = 1
AND v.rpt BETWEEN 1 AND @NoofRept
根据需要取消注释联接
<强> Example on SQL Fiddle 强>
答案 1 :(得分:0)
未经测试的伪代码,但这样的事情可能会起到作用:
DECLARE @sql nvarchar(max);
DELCARE @i int;
SET @i = 1;
SET @sql = 'select id,Name from tbl_Name where id=1'
WHILE @i < @NoofRept
BEGIN
SET @sql = @sql + 'UNION select id,Name from tbl_Name where id=1'
SET @i = @i + 1;
END
EXEC sp_executesql @sql;