settle_down_management/pro-base/src/main/resources/mybatis/demo/DemoStudentMapper.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.idea.demo.mapper.DemoStudentMapper">
  <resultMap id="BaseResultMap" type="com.idea.demo.model.DemoStudent">
    <id column="id" jdbcType="VARCHAR" property="id" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="gender" jdbcType="VARCHAR" property="gender" />
    <result column="birthday" jdbcType="TIMESTAMP" property="birthday" />
    <result column="comment" jdbcType="VARCHAR" property="comment" />
    <result column="created_at" jdbcType="TIMESTAMP" property="createdAt" />
    <result column="created_by" jdbcType="VARCHAR" property="createdBy" />
  </resultMap>
  <sql id="Example_Where_Clause">
    <where>
      <foreach collection="oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <foreach collection="criteria.criteria" item="criterion">
              <choose>
                <when test="criterion.noValue">
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue">
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue">
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue">
                  and ${criterion.condition}
                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause">
    <where>
      <foreach collection="example.oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <foreach collection="criteria.criteria" item="criterion">
              <choose>
                <when test="criterion.noValue">
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue">
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue">
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue">
                  and ${criterion.condition}
                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List">
    id, name, gender, birthday, comment, created_at, created_by
  </sql>
  <select id="selectByExample" parameterType="com.idea.demo.model.DemoStudentExample" resultMap="BaseResultMap">
    select
    <if test="distinct">
      distinct
    </if>
    <include refid="Base_Column_List" />
    from demo_student
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" parameterType="java.lang.String" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from demo_student
    where id = #{id,jdbcType=VARCHAR}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.String">
    delete from demo_student
    where id = #{id,jdbcType=VARCHAR}
  </delete>
  <delete id="deleteByExample" parameterType="com.idea.demo.model.DemoStudentExample">
    delete from demo_student
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.idea.demo.model.DemoStudent">
    <selectKey keyProperty="id" order="AFTER" resultType="java.lang.String">
      SELECT LAST_INSERT_ID()
    </selectKey>
    insert into demo_student (id, name, gender, birthday,
      comment, created_at, created_by
      )
    values (#{id,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR}, #{gender,jdbcType=VARCHAR}, #{birthday,jdbcType=TIMESTAMP},
      #{comment,jdbcType=VARCHAR}, #{createdAt,jdbcType=TIMESTAMP}, #{createdBy,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.idea.demo.model.DemoStudent">
    <selectKey keyProperty="id" order="AFTER" resultType="java.lang.String">
      SELECT LAST_INSERT_ID()
    </selectKey>
    insert into demo_student
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="id != null">
        id,
      </if>
      <if test="name != null">
        name,
      </if>
      <if test="gender != null">
        gender,
      </if>
      <if test="birthday != null">
        birthday,
      </if>
      <if test="comment != null">
        comment,
      </if>
      <if test="createdAt != null">
        created_at,
      </if>
      <if test="createdBy != null">
        created_by,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="id != null">
        #{id,jdbcType=VARCHAR},
      </if>
      <if test="name != null">
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="gender != null">
        #{gender,jdbcType=VARCHAR},
      </if>
      <if test="birthday != null">
        #{birthday,jdbcType=TIMESTAMP},
      </if>
      <if test="comment != null">
        #{comment,jdbcType=VARCHAR},
      </if>
      <if test="createdAt != null">
        #{createdAt,jdbcType=TIMESTAMP},
      </if>
      <if test="createdBy != null">
        #{createdBy,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.idea.demo.model.DemoStudentExample" resultType="java.lang.Long">
    select count(*) from demo_student
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map">
    update demo_student
    <set>
      <if test="record.id != null">
        id = #{record.id,jdbcType=VARCHAR},
      </if>
      <if test="record.name != null">
        name = #{record.name,jdbcType=VARCHAR},
      </if>
      <if test="record.gender != null">
        gender = #{record.gender,jdbcType=VARCHAR},
      </if>
      <if test="record.birthday != null">
        birthday = #{record.birthday,jdbcType=TIMESTAMP},
      </if>
      <if test="record.comment != null">
        comment = #{record.comment,jdbcType=VARCHAR},
      </if>
      <if test="record.createdAt != null">
        created_at = #{record.createdAt,jdbcType=TIMESTAMP},
      </if>
      <if test="record.createdBy != null">
        created_by = #{record.createdBy,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map">
    update demo_student
    set id = #{record.id,jdbcType=VARCHAR},
      name = #{record.name,jdbcType=VARCHAR},
      gender = #{record.gender,jdbcType=VARCHAR},
      birthday = #{record.birthday,jdbcType=TIMESTAMP},
      comment = #{record.comment,jdbcType=VARCHAR},
      created_at = #{record.createdAt,jdbcType=TIMESTAMP},
      created_by = #{record.createdBy,jdbcType=VARCHAR}
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.idea.demo.model.DemoStudent">
    update demo_student
    <set>
      <if test="name != null">
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="gender != null">
        gender = #{gender,jdbcType=VARCHAR},
      </if>
      <if test="birthday != null">
        birthday = #{birthday,jdbcType=TIMESTAMP},
      </if>
      <if test="comment != null">
        comment = #{comment,jdbcType=VARCHAR},
      </if>
      <if test="createdAt != null">
        created_at = #{createdAt,jdbcType=TIMESTAMP},
      </if>
      <if test="createdBy != null">
        created_by = #{createdBy,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=VARCHAR}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.idea.demo.model.DemoStudent">
    update demo_student
    set name = #{name,jdbcType=VARCHAR},
      gender = #{gender,jdbcType=VARCHAR},
      birthday = #{birthday,jdbcType=TIMESTAMP},
      comment = #{comment,jdbcType=VARCHAR},
      created_at = #{createdAt,jdbcType=TIMESTAMP},
      created_by = #{createdBy,jdbcType=VARCHAR}
    where id = #{id,jdbcType=VARCHAR}
  </update>
</mapper>