Re: calcite close connection

2019-05-27 Thread
hr.dwf3s"); System.out.println(String.format("第%s个客户端", i)); resultSet.close(); statement.close(); connection.close(); } } } Best Regards, Wangminhao Gou > -原始邮件- > 发件人: "勾王敏浩" > 发送时间: 2019-05-28 10:39:21 (星期二) > 收件人: dev@calcite.apache.org > 抄送: > 主题: calcite close connection > > Hi, > I found that when I close the calciteConnection,the subSchema connection > is not auto-closed... > > > Best Regards > Wangminhao Gou

calcite close connection

2019-05-27 Thread
Hi, I found that when I close the calciteConnection,the subSchema connection is not auto-closed... Best Regards Wangminhao Gou

calcite close connection

2019-05-26 Thread
Hi, I am currently using calcite to access postgre and other relational databases. But throws the exception "too many clients". While I have closed the calciteConnection after performing the operation. I want to know if the connections to the underlying databases have been closed after the conne

Calcite push-down operation

2019-05-09 Thread
Hi, My name is Wangminhao Gou. I've read the CSV example of calcite and written several other adapters following the CSV adapter(However, all are scannable). Now I'm going to write the adapter for IoTDB. However,Considering performance, we don't want to just implement ScannableTable. We want to

insert timestamp value into postgresql

2019-03-28 Thread
Hi, My Name is Wangminhao Gou,I hava used calcite to operate several relational databases including PG,however,when I want to insert timestamp value,there is an exception.The information is like this: org.apache.calcite.runtime.CalciteContextException: From line 1, column 47 to line 1, column 60

using calcite to read csv files from hdfs.

2019-03-07 Thread
Hello, everyone. This is Wangminhao Gou. I have an urgent need now. I want to read CSV files from remote HDFS and parse them using calcite. Now that I can use a file stream to get this CSV file, and understand how to use calcite to make a relational table of the local csv, what should I do next

question using ddl

2019-03-03 Thread
Hi, Currently I am using calcite jdbc trying to create a table in mysql. My code is like this. public static void main(String[] args) throws Exception { Class.forName("org.apache.calcite.jdbc.Driver"); Properties info = new Properties(); info.setProperty("lex", "JAVA"); info.setProperty

question about get the remark of table and column using calcite jdbc

2019-03-02 Thread
Hi, Currently we face a problem,when we use calcite connection to get the comment of the table,the "REMARK" of table is returned with "null". I wonder whether we can get table comment or column comment using calcite. Thank you