Hi We are developing a new feature on master branch, support wildcard ** in IOTDB-SQL. Here's the link. https://github.com/apache/iotdb/pull/3918 Since we support * and **, and apply path pattern in SQL statement. Here are two type of DDL SQL to get all data under one prefixPath, and we want to choose one of them as default recommended statement presenting in UserGuide docs. 1. select * from <prefixPath>.**, e.g. select * from root.** 2. select ** from <pathPattern>, e.g. select ** from root Obviously, the second one is more simple than the first one. However, since we IoTDB have some hidden bugs in data query and presentation, define entities clearly in sql from clause and IoTDB will run more stable. That's why the second one prevails.
Look forward to your suggestions. Best ---------------------------------------------------- Yukun Zhou School of Software, Tsinghua University 周钰坤 清华大学 软件学院
