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https://issues.apache.org/jira/browse/FLINK-8866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16527246#comment-16527246
 ] 

ASF GitHub Bot commented on FLINK-8866:
---------------------------------------

Github user suez1224 commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6201#discussion_r199065915
  
    --- Diff: 
flink-libraries/flink-sql-client/src/main/java/org/apache/flink/table/client/gateway/local/LocalExecutor.java
 ---
    @@ -321,6 +327,18 @@ public void stop(SessionContext session) {
                }
        }
     
    +   private <T> void executeUpdateInternal(ExecutionContext<T> context, 
String query) {
    +           final ExecutionContext.EnvironmentInstance envInst = 
context.createEnvironmentInstance();
    +
    +           envInst.getTableEnvironment().sqlUpdate(query);
    +           // create job graph with dependencies
    +           final String jobName = context.getSessionContext().getName() + 
": " + query;
    +           final JobGraph jobGraph = envInst.createJobGraph(jobName);
    +
    +           // create execution
    +           new Thread(new ProgramDeployer<>(context, jobName, jobGraph, 
null)).start();
    --- End diff --
    
    @twalthr, for sink only table, I dont think the user need to define any 
rowtimes on it, since it will never use as a source. For table as both source 
and sink, when registering it as sink, I think we only need to take care of the 
'from-field' columns, since they map to actual data fields in the table. For 
`proctime` and 'from-source' columns, we can just ignore them when building the 
sink schema. Maybe, we should have some helper method for building the schema 
for source and sink separately. Please correct me if I missed something here. 
What do you think?


> Create unified interfaces to configure and instatiate TableSinks
> ----------------------------------------------------------------
>
>                 Key: FLINK-8866
>                 URL: https://issues.apache.org/jira/browse/FLINK-8866
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API &amp; SQL
>            Reporter: Timo Walther
>            Assignee: Shuyi Chen
>            Priority: Major
>              Labels: pull-request-available
>
> Similar to the efforts done in FLINK-8240. We need unified ways to configure 
> and instantiate TableSinks. Among other applications, this is necessary in 
> order to declare table sinks in an environment file of the SQL client. Such 
> that the sink can be used for {{INSERT INTO}} statements.
> Below are a few major changes in mind. 
> 1) Add TableSinkFactory/TableSinkFactoryService similar to 
> TableSourceFactory/TableSourceFactoryService
> 2) Add a common property called "type" with values (source, sink and both) 
> for both TableSource and TableSink.
> 3) in yaml file, replace "sources" with "tables", and use tableType to 
> identify whether it's source or sink.



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