SPC/ym-baisc/src/main/resources/mapper/ProductFeaturesMapper.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.cnbm.basic.mapper.ProductFeaturesMapper">

    <select id="getProductFeaturesByProductId" resultType="com.cnbm.basic.dto.ProductFeaturesDTO">
        select p.*,w.code as workingProcedureCode,w.name as workingProcedureName,m.name as measureToolName,u.name as unitName,c.name as controlGraphName
        from product_features p
        LEFT JOIN working_procedure w ON p.working_procedure_id=w.id
        LEFT JOIN measure_tool m ON p.measure_tool_id=m.id
        LEFT JOIN unit u ON p.unit_id=u.id
        LEFT JOIN control_graph c ON p.control_graph_id=c.id
        <where>
            p.valid = 1 AND p.product_id = #{id}
        </where>
        order by p.id asc
    </select>

</mapper>