mysql - 如何更新 MySQL SET 值 WHERE 某些列内容 LIKE 另一个表列内容

Question

我有一张 table 城市名称表(citytable)

idcity  |   cityname     |  statename  |    codenumber
   1    |   Los Angeles  |   state2    |     ...
   2    |   New York     |   state3    |     ...
   3    |   New Jersey   |   state3    |     ...

代码城市表(codetable)

  id |  city     | codenumber
   1 |  angeles  |   031
   2 |  york     |   064
   3 |  jersey   |   075

如何SET 或 INSERT 或 UPDATE data 'codenumber' FROM 'codetable' fields INTO 'codenumber' column FROM citytable WHERE 'city' FROM codetable LIKE '%cityname%' FROM 'citytable'？感谢您的帮助。

Answer 1

使用 UPDATE with join

UPDATE  cityTable a
        INNER JOIN codeTable b
            ON a.ID = b.ID
SET     a.codeNumber = b.codeNumber

但我在这里怀疑 ID 是 AUTO_INCREMENTed 列，如果是这样的话，

UPDATE  cityTable a
        INNER JOIN codeTable b
            ON a.cityName LIKE CONCAT('%', b.city,'%')
SET     a.codeNumber = b.codeNumber