service/sc-service/src/main/resources/mapper/common/CompanyMapper.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.huyi.service.common.company.mapper.CompanyMapper">

    <select id="selectCompanyList" parameterType="map" resultType="map">
        SELECT
            scy_id              'scyId',
            scy_name           'scyName',
            CASE  WHEN scy_id= #{paramMap.scyId}  THEN 0  ELSE  1  END  'flag'
        FROM
        sys_company
        WHERE scy_status = '00'
        and scy_type = #{paramMap.scyType}
        <if test="paramMap.scyId != null  and paramMap.scyId != ''">
            AND (scy_id= #{paramMap.scyId} OR scy_status = '00')
        </if>
        order by flag asc ,create_time desc
    </select>
</mapper>