Question

除了用户ID的自定义列表（这些不是前1000名的一部分）之外，我想根据收入选择前1000个用户ID

换句话说，我想在下面的查询中查询：

SELECT TOP 1000 * FROM XX
ORDER BY REVENUE DESC

SELECT * FROM XX
WHERE USER_ID IN (CUSTOM_LIST)

Answer 1

您需要一个联盟，但由于在Set-Select中不允许使用TOP，您必须将其嵌套在派生表中：

SELECT *
FROM
 (
   SELECT TOP 1000 * FROM XX
   ORDER BY REVENUE DESC
 ) as dt

 UNION
  -- UNION ALL is more efficient, but a user from the custom list who is 
  -- also in the top 1000 would be returned twice

SELECT * FROM XX
WHERE USER_ID IN (CUSTOM_LIST)

选择TOP 1000 +自定义用户ID

1 个答案: