update

mec-biz/src/main/resources/config/mybatis/ClassGroupMapper.xml

@@ -1407,7 +1407,7 @@
     <sql id="queryClassGroupPageSql">
         <where>
             cg.group_type_ = 'MUSIC' AND cg.del_flag_ = 0
-            <if test="type != null and type != ''">
+            <if test="type != null">
                 AND type_ = #{type,typeHandler=com.ym.mec.common.dal.CustomEnumTypeHandler}
             </if>
             <if test="search != null and search != ''">