hms-course-learning-backend/src/main/resources/mapper/CourseOrderMapper.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="cn.seecoder.courselearning.mapperservice.CourseOrderMapper">
  <resultMap id="BaseResultMap" type="cn.seecoder.courselearning.po.CourseOrder">
    <id column="id" jdbcType="INTEGER" property="id" />
    <result column="cost" jdbcType="INTEGER" property="cost" />
    <result column="course_id" jdbcType="INTEGER" property="courseId" />
    <result column="course_name" jdbcType="VARCHAR" property="courseName" />
    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
    <result column="user_id" jdbcType="VARCHAR" property="userId" />
    <result column="status" jdbcType="INTEGER" property="status" />
  </resultMap>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from course_order
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="cn.seecoder.courselearning.po.CourseOrder">
    insert into course_order (id, cost, course_id, 
      course_name, create_time, user_id, 
      status)
    values (#{id,jdbcType=INTEGER}, #{cost,jdbcType=INTEGER}, #{courseId,jdbcType=INTEGER}, 
      #{courseName,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, #{userId,jdbcType=VARCHAR}, 
      #{status,jdbcType=INTEGER})
  </insert>
  <update id="updateByPrimaryKey" parameterType="cn.seecoder.courselearning.po.CourseOrder">
    update course_order
    set cost = #{cost,jdbcType=INTEGER},
      course_id = #{courseId,jdbcType=INTEGER},
      course_name = #{courseName,jdbcType=VARCHAR},
      create_time = #{createTime,jdbcType=TIMESTAMP},
      user_id = #{userId,jdbcType=VARCHAR},
      status = #{status,jdbcType=INTEGER}
    where id = #{id,jdbcType=INTEGER}
  </update>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select id, cost, course_id, course_name, create_time, user_id, status
    from course_order
    where id = #{id,jdbcType=INTEGER}
  </select>
  <select id="selectByUserId" resultMap="BaseResultMap">
    select id, cost, course_id, course_name, create_time, user_id, status
    from course_order
    where user_id=#{userId}
  </select>
  <select id="queryMostRecentOrder" resultMap="BaseResultMap">
    select id, cost, course_id, course_name, create_time, user_id, status
    from course_order
    where user_id=#{userId} and course_id=#{courseId}
    order by create_time desc limit 1
  </select>
</mapper>