Mybatis sql statement writing problem

1. Logical delete sql

　　update contacts set status = '2' where id = #{id}

2. Multi-condition update sql

　　update contacts
　　<set>
    　　<if test="name != null">
       　　 name = #{name},
    　　</if>
    　　<if test="phone != null">
 　　phone = #{phone}
 　　</if>
　　</set>
　　where id = #{id}

3. Multi-condition query sql

　　select * from contacts where id = #{id} and status = '1'