mybatis中 bit类型判断

<if test="recommend != null and recommend == true">
        and g.recommend = 1
     </if>
    <if test="recommend != null and recommend == false">
        and g.recommend = 0
     </if>

　recommend类型是bit类型，判断时只能用0（代表false）或者1　(true)

文章来自：https://www.cnblogs.com/hjy2018/p/9734936.html