从两个单独的SQL表中更新两个条目

Question

我正在尝试更新出版物的标题和期刊的年份（对应于它）。我需要做两个单独的查询吗？或者我可以在一个查询中执行此操作吗？

%%sql
    /* Change the title of an article and its publication year. */
    UPDATE publication
    SET title = "Sleepy", year = 2017
    JOIN journal
        ON publication.ID = journal.ID
    WHERE title = "test title";

Answer 1

您可以使用此语法更新多个表：

UPDATE table1，table2，... SET column1 = expression1，     column2 = expression2，     ... WHERE table1.column = table2.column [和条件];

Answer 2

看看这是否有效。令人困惑的是哪些列属于没有架构的哪个表。

UPDATE publication
    SET title = "Sleepy", year = 2017    
    WHERE title = "test title" and ID in (Select ID From journal);