sunjincheng121 commented on a change in pull request #757: Add design documents URL: https://github.com/apache/incubator-iotdb/pull/757#discussion_r372302478
########## File path: docs/Documentation-CHN/Developers/DataQuery/DataQuery.md ########## @@ -0,0 +1,67 @@ +<!-- + + Licensed to the Apache Software Foundation (ASF) under one + or more contributor license agreements. See the NOTICE file + distributed with this work for additional information + regarding copyright ownership. The ASF licenses this file + to you under the Apache License, Version 2.0 (the + "License"); you may not use this file except in compliance + with the License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, + software distributed under the License is distributed on an + "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + KIND, either express or implied. See the License for the + specific language governing permissions and limitations + under the License. + +--> + +# 数据查询 + +* 查询种类 + * 原始数据查询 + * 聚合查询 + * 降采样查询 + * 单点补空值查询 + * 最新数据查询等 + +## 查询计划 + +主要包括两种查询框架: + +* 不带值过滤条件的(如,select s1,s2,s3 from root.d1) Review comment: 建议 在查询的示例 里面 用 `f' 表示 Field, 就是 `s1,s2,s3` -> `f1, f2, f3`, 同时字段之间添加空格。 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services