Question

我有三个表产品，具有相同创建日期列'创建'的事件。但是，如果任何用户向任何表添加条目，则应从网页上的该特定行显示详细信息。你能建议我，怎么做？

Answer 1

SELECT *
FROM (SELECT col1, col2, date
      FROM table1
      ORDER BY date DESC
      LIMIT 1
      UNION
      SELECT col1, col2, date
      FROM table2
      ORDER BY date DESC
      LIMIT 1
      UNION
      SELECT col1, col2, date
      FROM table3
      ORDER BY date DESC
      LIMIT 1) u
ORDER BY date DESC
LIMIT 1

显示来自不同mysql表的最新条目

1 个答案: