模板对照sql

admin-api/src/main/resources/mapper/DataFieldMapper.xml

@@ -21,7 +21,7 @@
         left join meta_field mf on df.field = mf.id
         left join (select *
         from data_field
-        where template_id = #{param.oldTemplateId} and field is not null) df2
+        where template_id = #{param.oldTemplateId} and field is not null group by field) df2
         on df2.field = df.field
         <where>
             <if test="param.templateId != null and param.templateId != ''">