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https://issues.apache.org/jira/browse/FLINK-5710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15863771#comment-15863771
 ] 

ASF GitHub Bot commented on FLINK-5710:
---------------------------------------

Github user fhueske commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3271#discussion_r100807508
  
    --- Diff: 
flink-libraries/flink-table/src/test/java/org/apache/flink/table/api/java/stream/sql/StreamAggregationSqlITCase.java
 ---
    @@ -0,0 +1,81 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.flink.table.api.java.stream.sql;
    +
    +import org.apache.flink.table.api.java.StreamTableEnvironment;
    +import org.apache.flink.api.java.tuple.Tuple5;
    +import org.apache.flink.types.Row;
    +import org.apache.flink.table.api.scala.stream.utils.StreamITCase;
    +import org.apache.flink.table.api.Table;
    +import org.apache.flink.table.api.TableEnvironment;
    +import org.apache.flink.streaming.api.datastream.DataStream;
    +import 
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
    +import org.apache.flink.streaming.util.StreamingMultipleProgramsTestBase;
    +import org.apache.flink.table.api.java.stream.utils.StreamTestData;
    +import org.junit.Ignore;
    +import org.junit.Test;
    +
    +import java.util.ArrayList;
    +import java.util.List;
    +
    +public class StreamAggregationSqlITCase extends 
StreamingMultipleProgramsTestBase {
    --- End diff --
    
    We test functions and expressions not with integration tests (too time 
intensive) but by extending the `ExpressionTestBase` class. We could add the 
tests for `procTime` to the `TemporalTypesTest` class.


> Add ProcTime() function to indicate StreamSQL
> ---------------------------------------------
>
>                 Key: FLINK-5710
>                 URL: https://issues.apache.org/jira/browse/FLINK-5710
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataStream API
>            Reporter: Stefano Bortoli
>            Assignee: Stefano Bortoli
>            Priority: Minor
>
> procTime() is a parameterless scalar function that just indicates processing 
> time mode



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