获取头像是否可以修改

suser/src/main/resources/mapper/system/UserMapper.xml

     </select>
     <!--获取头像是否可以修改-->
     <select id="getHeadTime" resultType="java.lang.Integer">
-        select (case when headtime is null then 1 when headtime+6*30*24*60*60>unix_timestamp() then 1 else 0 end)
+        select (case when headtime is null then 1 when headtime+6*30*24*60*60 &lt; unix_timestamp() then 1 else 0 end)
         from t_user where userid=#{userid}
     </select>