WebRoot/WEB-INF/classes/com/shop/mapper/OsSpecificationAttributeMapper.xml

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<?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.shop.dao.OsSpecificationAttributeMapper">
  <resultMap id="BaseResultMap" type="com.shop.po.OsSpecificationAttribute">
    <id column="spec_attr_id" jdbcType="BIGINT" property="specAttrId" />
    <result column="specification_id" jdbcType="BIGINT" property="specificationId" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
  </resultMap>
  <sql id="Base_Column_List">
    spec_attr_id, specification_id, name, create_time
  </sql>
  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from os_specification_attribute
    where spec_attr_id = #{specAttrId,jdbcType=BIGINT}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
    delete from os_specification_attribute
    where spec_attr_id = #{specAttrId,jdbcType=BIGINT}
  </delete>
  <insert id="insert" parameterType="com.shop.po.OsSpecificationAttribute">
    insert into os_specification_attribute (spec_attr_id, specification_id, name, 
      create_time)
    values (#{specAttrId,jdbcType=BIGINT}, #{specificationId,jdbcType=BIGINT}, #{name,jdbcType=VARCHAR}, 
      #{createTime,jdbcType=TIMESTAMP})
  </insert>
  <insert id="insertSelective" parameterType="com.shop.po.OsSpecificationAttribute">
    insert into os_specification_attribute
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="specAttrId != null">
        spec_attr_id,
      </if>
      <if test="specificationId != null">
        specification_id,
      </if>
      <if test="name != null">
        name,
      </if>
      <if test="createTime != null">
        create_time,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="specAttrId != null">
        #{specAttrId,jdbcType=BIGINT},
      </if>
      <if test="specificationId != null">
        #{specificationId,jdbcType=BIGINT},
      </if>
      <if test="name != null">
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="createTime != null">
        #{createTime,jdbcType=TIMESTAMP},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.shop.po.OsSpecificationAttribute">