随机记录SQL Server的条款

Question

我有一列[Star]（Integer），可以有1或2或3

值我有很多记录的表。

我如何选择我的表100分的记录，首先选择它[Star]列3个值 然后选择[Star] 2值和最终选择[Star] 1倍的值？

Answer 1

，2，然后1，但只有前100用途：

Select Top (100) * 
from your_table 
where [Star] in (1,2,3) 
Order by [Star] desc 

如果不是，请添加一些澄清/样本数据并输出到您的问题。

Answer 2

select top 100 * from your_table where star = 1 
union all 
select top 100 * from your_table where star = 2 
union all 
select top 100 * from your_table where star = 3 

Answer 3

SELECT TOP 100 * FROM <TABLE> WHERE [Star] = 3 
UNION ALL 
SELECT TOP 100 * FROM <TABLE> WHERE [Star] = 2 
UNION ALL 
SELECT TOP 100 * FROM <TABLE> WHERE [Star] = 1 

Answer 4

订购NEWID（）会产生随机结果。

SELECT * 
FROM (
      SELECT TOP (100) * FROM TABLE_NAME 
      WHERE [Star] = 3 
      ORDER BY NEWID() 
    ) r3 
UNION ALL 
SELECT * 
FROM (
      SELECT TOP (100) * FROM TABLE_NAME 
      WHERE [Star] = 2 
      ORDER BY NEWID() 
    ) r2 
UNION ALL 
SELECT * 
FROM (
      SELECT TOP (100) * FROM TABLE_NAME 
      WHERE [Star] = 1 
      ORDER BY NEWID() 
    ) r3 

如果一共只有100个随机记录您可以根据需要调整TOP（n）的，如果你想第一个3