mybatis xml isnotin 标签使用

mybatis xml中不存在isnotin标签，但可以使用not in语法来实现类似功能，例如：

<select id="selectUserByNameList" parameterType="java.util.List" resultType="User">
    SELECT * FROM user WHERE name NOT IN
    <foreach collection="list" item="name" open="(" separator="," close=")">
        #{name}
    </foreach>
</select>

这个例子中，使用了foreach标签来动态生成not in语法，将list中的name值作为参数传入SQL语句中的not in条件中。

相关问题

mybatis xml not concat

If you are trying to concatenate two values in MyBatis XML, you can use the `concat()` function. Here is an example:

<select id="getFullName" resultType="string">
  SELECT CONCAT(first_name, ' ', last_name) AS full_name
  FROM users
  WHERE id = #{id}
</select>

This will concatenate the `first_name` and `last_name` columns with a space in between to create the `full_name` column.

If you are still having trouble with concatenation in MyBatis XML, please provide more information about your specific use case and what you have tried so far.

mybatis not in

MyBatis is a popular Java-based persistence framework that provides support for mapping SQL queries to Java objects. The "NOT IN" clause is a feature of SQL, not directly related to MyBatis.

To use the "NOT IN" clause in your MyBatis query, you can utilize the `<foreach>` tag in combination with the SQL fragment. Here's an example:

<select id="getUsers" resultType="User">
  SELECT * FROM users
  WHERE id NOT IN
  <foreach item="item" collection="idList" open="(" separator="," close=")">
    #{item}
  </foreach>
</select>

In this example, `idList` is a parameter passed to the query containing the list of IDs to exclude from the result. The `<foreach>` tag iterates over the `idList` and constructs the "NOT IN" clause dynamically.

You can customize this example based on your specific requirements and adjust the query accordingly. Remember to define the `idList` parameter in your mapper interface or XML file.

I hope this helps! Let me know if you have any further questions.