anykhub opened a new issue, #8682: URL: https://github.com/apache/iotdb/issues/8682
### Search before asking - [X] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar. ### Version V1.0.0 ### Describe the bug and provide the minimal reproduce step 1. sql语句： ` select last inv_I_dispersion_level from root.DZ00000001.WZXB000001.WZHL000003.WZNB000002,root.DZ00000001.WZXB000001.WZHL000003.WZNB000003,root.DZ00000001.WZXB000001.WZHL000003.WZNB000004` 2. 以上sql语句查询，任意两个设备组合使用last查询都没问题。 ### What did you expect to see?  ### What did you see instead? 服务端报错：`2022-12-30 13:31:51,424 [pool-36-IoTDB-ClientRPC-Processor-2377] WARN o.a.i.d.u.ErrorHandlingUtils:90 - Status code: 301, Query Statement: "SELECT last inv_I_dispersion_level from root.DZ00000001.WZXB000001.WZHL000003.WZNB000002, root.DZ00000001.WZXB000001.WZHL000003.WZNB000003, root.DZ00000001.WZXB000001.WZHL000003.WZNB000004". executeStatement failed org.apache.iotdb.commons.exception.IoTDBException: java.lang.NullPointerException at org.apache.iotdb.db.mpp.plan.execution.QueryExecution.dealWithException(QueryExecution.java:430) at org.apache.iotdb.db.mpp.plan.execution.QueryExecution.getResult(QueryExecution.java:413) at org.apache.iotdb.db.mpp.plan.execution.QueryExecution.getBatchResult(QueryExecution.java:439) at org.apache.iotdb.db.utils.QueryDataSetUtils.convertTsBlockByFetchSize(QueryDataSetUtils.java:204) at org.apache.iotdb.db.service.thrift.impl.ClientRPCServiceImpl.lambda$static$1(ClientRPCServiceImpl.java:168) at org.apache.iotdb.db.service.thrift.impl.ClientRPCServiceImpl.executeStatementInternal(ClientRPCServiceImpl.java:236) at org.apache.iotdb.db.service.thrift.impl.ClientRPCServiceImpl.executeStatement(ClientRPCServiceImpl.java:825) at org.apache.iotdb.service.rpc.thrift.IClientRPCService$Processor$executeStatement.getResult(IClientRPCService.java:3603) at org.apache.iotdb.service.rpc.thrift.IClientRPCService$Processor$executeStatement.getResult(IClientRPCService.java:3583) at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:38) at org.apache.iotdb.db.service.thrift.ProcessorWithMetrics.process(ProcessorWithMetrics.java:64) at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:248) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750) Caused by: java.lang.NullPointerException: null at org.apache.iotdb.db.mpp.execution.operator.process.last.LastQueryUtil.appendLastValue(LastQueryUtil.java:108) at org.apache.iotdb.db.mpp.execution.operator.process.last.LastQueryMergeOperator.next(LastQueryMergeOperator.java:171) at org.apache.iotdb.db.mpp.execution.driver.Driver.processInternal(Driver.java:186) at org.apache.iotdb.db.mpp.execution.driver.Driver.lambda$processFor$1(Driver.java:125) at org.apache.iotdb.db.mpp.execution.driver.Driver.tryWithLock(Driver.java:270) at org.apache.iotdb.db.mpp.execution.driver.Driver.processFor(Driver.java:118) at org.apache.iotdb.db.mpp.execution.schedule.DriverTaskThread.execute(DriverTaskThread.java:64) at org.apache.iotdb.db.mpp.execution.schedule.AbstractDriverThread.run(AbstractDriverThread.java:74)` ### Anything else? 服务端的data数据 [data.zip](https://github.com/apache/iotdb/files/10323877/data.zip) ### Are you willing to submit a PR? - [X] I'm willing to submit a PR! -- 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. To unsubscribe, e-mail: reviews-unsubscr...@iotdb.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
