1、將電話中間換成*****

SELECT a.humbleWish_id,a.humbleWish_name,
		  concat_ws('****',
            substring(a.humbleWish_tel, 1, 4),
            substring(a.humbleWish_tel, 9, 3)) AS humbleWish_tel
		 ,a.humbleWish_content,
		 DATE_FORMAT(a.input_time,'%Y-%m-%d') as input_time,b.dept_name
		 FROM wkrj_bus_humbleWish a left join wkrj_sys_department b on a.dept_id=b.dept_id
		 where a.isShenhe="1"
		 order by a.input_time desc 
 

2、mysql中的if–else

<choose>
       <when test="null !=is_zj and ''!=is_zj">
          and a.is_zj = "1" 
       </when>
        <when test="null !=is_deal and ''!=is_deal">
          and a.is_deal = "1" 
       </when>
       <otherwise>
          and (a.is_zj = "1" or a.is_deal ="1")
       </otherwise>
     </choose>
 

3、mysql中的if

<if test="null ==is_zj and ''==is_zj and null ==is_deal and ''==is_deal">
			and (a.is_zj = "1" or a.is_deal ="1")
		</if>
		<if test="null !=is_zj and ''!=is_zj and null ==is_deal and ''==is_deal">
			and a.is_zj = "1" 
		</if>
		<if test="null ==is_zj and ''==is_zj and null !=is_deal and ''!=is_deal">
			and a.is_deal = "1" 
		</if>