如何在表中为所有具有相同名称的同一个id列的记录设置

Question

如何使用梅赛德斯的一个查询设置相同的“优先级”。

+---------------------+-------------+-------------+
|        cars         |    place    |   priority  |
+---------------------+-------------+-------------+
|Aston Martin         |Moscov       |1            |
|Mercedes Benz        |Paris        |3            |
|Aston Martin         |Moscov       |1            |
|Ferrari Testarossa   |New York     |2            |
|Ferrari Testarossa   |Moscov       |2            |
|Subaru impreza       |Paris        |4            |
|Aston Martin         |Paris        |1            |
|Aston Martin         |New York     |1            |
|Mercedes Benz        |Moscov       |3            |
|Subaru impreza       |New York     |4            |
+---------------------+-------------+-------------+

Answer 1

可能类似

Update table_name
set priority = case when cars ='Mercedes Benz' then 1 
when cars ='Aston martin' then 2 
when cars ='Subaru Impreza' then 3 end;

您可以在单个查询中更新所有汽车优先级。

Answer 2

VALUE
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in stock