java - 动态mybatis xml查询

Question

在以下动态查询方面需要帮助：

if country==null OR country != (spain || Peru)
select * from emp where country NOT IN (spain,Peru)
else
select * from emp where country=#{country}

我尝试了这样的事情，但没有帮助：

<when test="country ==null" or country !='spain' or country != 'Peru'">
            AND country NOT IN ('spain','peru')
            </when>
            <otherwise>
            AND country=#{country}
 </otherwise>

即使 country=us 也总是生成 NOT IN

标签： javamybatisspring-mybatis

Answer 1

尝试这个test="country == null or country != 'spain' or country != 'UK' "