LibMajorMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.laowu.mapper.LibMajorMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="com.laowu.model.LibMajorDO">
        <id column="id" property="id" />
        <result column="create_date" property="createDate" />
        <result column="update_date" property="updateDate" />
        <result column="delete_date" property="deleteDate" />
        <result column="college_type" property="collegeType" />
        <result column="major" property="major" />
        <result column="major_code" property="majorCode" />
    </resultMap>

    <!-- 通用查询结果列 -->
    <sql id="Base_Column_List">
        create_date,
        update_date,
        delete_date,
        id, college_type, major, major_code
    </sql>

    <select id="allMajor" resultType="com.laowu.vo.major.AllMajorVO">
        SELECT
            *
        FROM
            lib_major t
        WHERE
            t.delete_date IS NULL
            AND t.college_type = #{collegeType}
            <if test="major != null and major != ''">
                AND (t.major like  concat('%', #{major}, '%') or t.major_code like concat('%', #{majorCode}))
            </if>
    </select>

</mapper>