public class StructTypeTestStringInt {
public ArrayList evaluate(Integer val1, String val2) {
if (val1 == null && val2 == null) {
return null;
}
ArrayList res = new ArrayList<>();
res.add(val1);
res.add(val2);
return res;
}
}
这段测试UDTF的代码，这个Object可不可以用Student类来代替应用，试过报错
errCode = 2, detailMessage = (192.168.10.11)[INTERNAL_ERROR]UdfRuntimeException: UDF failed to evaluate
CAUSED BY: ArrayStoreException: org.example.UDTF.UDTFStudentTest1$Student
at org.apache.doris.qe.Coordinator.getNext(Coordinator.java:1197) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.executeAndSendResult(StmtExecutor.java:1969) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.handleQueryStmt(StmtExecutor.java:1907) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.handleQueryWithRetry(StmtExecutor.java:916) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.executeByNereids(StmtExecutor.java:831) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:603) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.queryRetry(StmtExecutor.java:566) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:556) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.ConnectProcessor.executeQuery(ConnectProcessor.java:340) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:243) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.MysqlConnectProcessor.handleQuery(MysqlConnectProcessor.java:209) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.MysqlConnectProcessor.dispatch(MysqlConnectProcessor.java:237) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.qe.MysqlConnectProcessor.processOnce(MysqlConnectProcessor.java:414) ~[doris-fe.jar:1.2-SNAPSHOT]
at org.apache.doris.mysql.ReadListener.lambda$handleEvent$0(ReadListener.java:52) ~[doris-fe.jar:1.2-SNAPSHOT]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
at java.lang.Thread.run(Thread.java:833) ~[?:?]
想法就是为了实现通过UDTF查询一些值，比如一个三元组，输出结果为多值3列，比如：
id name age
1 tom1 18
2 tom2 19
3 tom3 20
这种能不能实现呢
