How to use binary operator

[Alan000]

Hello

I want to excute query 'select sum_duration/sum_usage_count from test limit 1', but I got error like
org.antlr.runtime.DFA.noViableAlt(DFA.java:158)
org.antlr.runtime.DFA.predict(DFA.java:144) com.linkedin.pinot.pql.parsers.PQLParser.selection_list(PQLParser.java:2133) com.linkedin.pinot.pql.parsers.PQLParser.select_stmt(PQLParser.java:1459) com.linkedin.pinot.pql.parsers.PQLParser.statement(PQLParser.java:1246) com.linkedin.pinot.pql.parsers.PQLCompiler.compile(PQLCompiler.java:50) com.linkedin.pinot.broker.servlet.PinotClientRequestServlet.handleRequest(PinotClientRequestServlet.java:99) com.linkedin.pinot.broker.servlet.PinotClientRequestServlet.doPost(PinotClientRequestServlet.java:82) javax.servlet.http.HttpServlet.service(HttpServlet.java:688) javax.servlet.http.HttpServlet.service(HttpServlet.java:770) org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669) org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455) org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560) org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072) org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382) org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006) org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) org.eclipse.jetty.server.Server.handle(Server.java:365) org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485) org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:937) org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:998) org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667) org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) java.lang.Thread.run(Thread.java:745)

The table test 's structure:

action_data STRING

area STRING

device_type STRING

is_new STRING

sum_duration DOUBLE

sum_usage_count INT

time_range INT

user_count INT

Is there any error in the query statement? Waiting for your answer!