Siddhi 不能按一个以上的变量分组吗？

Question

我有以下流定义：

String eventStreamDefinition = "define stream cdrEventStream (nodeId string, phone string, timeStamp long, isOutgoingCall bool); ";

以及查询：

String query = "@info(name = 'query1') from cdrEventStream#window.externalTime(timeStamp,5 sec) select nodeId, phone, timeStamp, isOutgoingCall, count(nodeId) as callCount group by phone,isOutgoingCall insert all events into outputStream;";

但是当我尝试编译它们时，我得到：

org.wso2.siddhi.query.compiler.exception.SiddhiParserException: You have an error in your SiddhiQL at line 1:267, extraneous input ',' expecting {'#', STREAM, DEFINE, TABLE, FROM, PARTITION, WINDOW, SELECT, GROUP, BY, HAVING, INSERT, DELETE, UPDATE, RETURN, EVENTS, INTO, OUTPUT, EXPIRED, CURRENT, SNAPSHOT, FOR, RAW, OF, AS, OR, AND, ON, IS, NOT, WITHIN, WITH, BEGIN, END, NULL, EVERY, LAST, ALL, FIRST, JOIN, INNER, OUTER, RIGHT, LEFT, FULL, UNIDIRECTIONAL, YEARS, MONTHS, WEEKS, DAYS, HOURS, MINUTES, SECONDS, MILLISECONDS, FALSE, TRUE, STRING, INT, LONG, FLOAT, DOUBLE, BOOL, OBJECT, ID_QUOTES, ID}
    at org.wso2.siddhi.query.compiler.internal.SiddhiErrorListener.syntaxError(SiddhiErrorListener.java:34)
    at org.antlr.v4.runtime.ProxyErrorListener.syntaxError(ProxyErrorListener.java:65)
    at org.antlr.v4.runtime.Parser.notifyErrorListeners(Parser.java:558)
    at org.antlr.v4.runtime.DefaultErrorStrategy.reportUnwantedToken(DefaultErrorStrategy.java:377)
    at org.antlr.v4.runtime.DefaultErrorStrategy.sync(DefaultErrorStrategy.java:275)
    at org.wso2.siddhi.query.compiler.SiddhiQLParser.group_by(SiddhiQLParser.java:3783)
    at org.wso2.siddhi.query.compiler.SiddhiQLParser.query_section(SiddhiQLParser.java:3713)
    at org.wso2.siddhi.query.compiler.SiddhiQLParser.query(SiddhiQLParser.java:1903)
    at org.wso2.siddhi.query.compiler.SiddhiQLParser.execution_element(SiddhiQLParser.java:619)
    at org.wso2.siddhi.query.compiler.SiddhiQLParser.execution_plan(SiddhiQLParser.java:550)
    at org.wso2.siddhi.query.compiler.SiddhiQLParser.parse(SiddhiQLParser.java:152)
    at org.wso2.siddhi.query.compiler.SiddhiCompiler.parse(SiddhiCompiler.java:61)
    at org.wso2.siddhi.core.SiddhiManager.createExecutionPlanRuntime(SiddhiManager.java:59)

让查询编译的唯一方法是从 group by 子句中删除 isOutgoingCall。 Siddhi 文档指出按多个变量分组应该是可能的。这是一个错误吗？

这是 3.0.0-alpha 版。

Answer 1

Siddhi 3.0.0 支持按多个变量分组。我刚刚用 Siddhi 3.0.0 检查了你的查询，我能够编译它。但当然我使用的是发布的 3.0.0。可以试试吗

提示：您可以使用 Siddhi try it 轻松尝试您的查询

Siddhi 不能按一个以上的变量分组吗？

Is Siddhi unable to group by more than one variable?

java

wso2

siddhi