mapper文件的写法为：（模糊查询，查询时间段）
<if test="com_name!=null and com_name!=''">
and sc.com_name like CONCAT(CONCAT('%',#{com_name}),'%')
</if>
<if test="check_begin_date!=null and check_begin_date!=''">
<![CDATA[
and DATE_FORMAT(tcb.check_begin_date, '%Y-%m-%d') >= DATE_FORMAT(#{check_begin_date}, '%Y-%m-%d')
]]>
</if>
<if test="check_end_date!=null and check_end_date!=''">
<![CDATA[
and DATE_FORMAT(tcb.check_begin_date, '%Y-%m-%d') <= DATE_FORMAT(#{check_end_date}, '%Y-%m-%d')
]]>
</if>