Mysql 在80+；桌子

我有80张桌子，我想筛选80张桌子中谁的价格最高。我计划使用此查询：

SELECT id
 FROM (SELECT id, price FROM T1 WHERE price = (SELECT MAX(price) FROM T1)
    UNION
    SELECT id, price FROM T2 WHERE price = (SELECT MAX(price) FROM T2)
    UNION
    SELECT id, price FROM T3 WHERE price = (SELECT MAX(price) FROM T3)
   ) AS M
 ORDER BY price DESC
 LIMIT 1

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但我发现它效率低下。还有别的办法吗？

我想这会快得多

SELECT id, price FROM t1
UNION SELECT id, price FROM t2
UNION SELECT id, price FROM t3
ORDER BY price DESC 
LIMIT 1

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每个客户/年/地区的表格表明数据库设计较差。我建议重新考虑你的模式。简单。没有80张桌子。