[GitHub] [incubator-iotdb] qiaojialin commented on issue #1461: 您好，请问一下我操作java API获取表字段类型的时候有问题？ (How to get series data type using Java API)

2020-07-06 Thread GitBox 


qiaojialin commented on issue #1461:
URL: 
https://github.com/apache/incubator-iotdb/issues/1461#issuecomment-654070828


   > Not maintained?? don't we have UT to cover it?
   > 
   > 我们这个接口没有再维护了？JDBC的接口还是应该维护吧。。
   
   ResultSetMetaData metaData = resultSet.getMetaData();
   metaData.getColumnLabel();
   这个是有的，那个 catalog 什么的没了
   
   
   
![image](https://user-images.githubusercontent.com/7240743/86568183-11596d00-bf9f-11ea-829a-0ab206c922e0.png)
   



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[GitHub] [incubator-iotdb] qiaojialin commented on issue #1461: 您好，请问一下我操作java API获取表字段类型的时候有问题？ (How to get series data type using Java API)

2020-07-06 Thread GitBox 


qiaojialin commented on issue #1461:
URL: 
https://github.com/apache/incubator-iotdb/issues/1461#issuecomment-654066277


   preparedStatement 最近没维护，不确定能不能正常工作。。如果每次写入都要查一下元数据会比较慢，可以用 Session 的 
insertRecords 接口。String values 这个接口会在服务器端自动推断类型，只要提前注册好序列就可以了。
   
   如果想写入的时候指定类型，可以查出来类型在客户端缓存，这个查询可以用 show timeseries



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[GitHub] [incubator-iotdb] qiaojialin commented on issue #1461: 您好，请问一下我操作java API获取表字段类型的时候有问题？

2020-07-06 Thread GitBox 


qiaojialin commented on issue #1461:
URL: 
https://github.com/apache/incubator-iotdb/issues/1461#issuecomment-654054037


   这个应该没维护了
   
   现在获取结果集列名的方法，JDBC 和 Session 不太一样，可以参考
   
   
https://raw.githubusercontent.com/apache/incubator-iotdb/master/example/jdbc/src/main/java/org/apache/iotdb/JDBCExample.java
   
   
https://github.com/apache/incubator-iotdb/blob/master/example/session/src/main/java/org/apache/iotdb/SessionExample.java
   
   推荐使用 Session 的



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