更新同一列中的多个值

Question

我有一个名为Movie_Stars的数据表。我想更新多个值，但它们都在同一列中。以下是我的：

update movie_stars 
set movie_category = 'Family' 
where movie_category = 'Drama' 
and set movie_category = 'Children' 
where movie_category = 'Cartoon' 
and set movie_category = 'Teen' 
where movie_category = 'Action'; 

但是，这会产生错误“无效的user.table.column，table.column或列规范”。那么什么是正确的色谱柱规格？

Answer 1

使用CASE表达：

update movie_stars 
set movie_category = case when movie_category = 'Drama' 
          then 'Family' 
          when movie_category = 'Cartoon' 
          then 'Children' 
          when movie_category = 'Action' 
          then 'Teen' 
        end 
where movie_category in ('Drama', 'Cartoon', 'Action')