按月、按日进行数据统计的Mysql语句

<select id="getCustomerTJByUser" parameterType="map" resultType="map">
      select u.username,
            <if test="dateType==&quot;d&quot;">DATE_FORMAT(c.create_date,‘%Y-%m-%d‘) createDate,</if>
            <if test="dateType==&quot;m&quot;">DATE_FORMAT(c.create_date,‘%Y-%m‘) createDate,</if>
            COUNT(*) summer
      from nb_custom c ,nb_user u
      where 1=1
            <if test="startDate!=null&amp;&amp;startDate!=&quot;&quot;"> and c.create_date &gt;= #{startDate}</if>
            <if test="endDate!=null&amp;&amp;endDate!=&quot;&quot;"> and c.create_date &lt;= #{endDate}</if>
            <if test="usernameTJ!=null&amp;&amp;usernameTJ!=&quot;&quot;"> and u.username=#{usernameTJ}</if>
            <if test="createId!=null"> and u.create_id=#{createId}</if>
             and u.state=1
             and c.nu_id_oper=u.nu_id
      GROUP BY  createDate,u.username
</select>

按月、按日进行数据统计的Mysql语句

原文：http://www.cnblogs.com/xiaonier/p/6042488.html