mysql - 如何将 mysql 查询转换为事务 SQL 查询

Question

我有一个适用于 MySQL 的查询。我需要使用 TRANSACT SQL 创建相同的结果。我一直无法弄清楚咒语。这是 MySQL 查询:

CREATE TEMPORARY TABLE tempo AS 
(SELECT master, MAX(nev) AS max 
 FROM accounts 
 WHERE where-clause 
 GROUP BY master 
 ORDER BY max DESC LIMIT 3);

SET @min = (SELECT MIN(max) FROM tempo);

SELECT * FROM accounts 
WHERE master IN (SELECT master FROM tempo) AND nev >= @min ORDER BY NEV DESC;

帮助或指向解释将不胜感激

Answer 1

我从未使用过 MySQL，但我认为这就是您想要的:

DECLARE @min INT;

SELECT TOP 3
       master
     , MAX(nev) AS max
INTO #tempo
FROM accounts
WHERE WHERE-clause
GROUP BY master
ORDER BY max DESC;

SELECT @min = MIN(max)
FROM #tempo;

SELECT *
FROM accounts
WHERE master IN
      (
          SELECT master FROM #tempo
      )
      AND nev >= @min
ORDER BY NEV DESC;