[jira] [Created] (FLINK-11342) Add example for every built-In TableAPI&SQL Function

[Shang Yuanchun (Jira)]

Hequn Cheng created FLINK-11342:
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             Summary: Add example for every built-In TableAPI&SQL Function
                 Key: FLINK-11342
                 URL: https://issues.apache.org/jira/browse/FLINK-11342
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
    Affects Versions: 1.7.1, 1.7.0
            Reporter: Hequn Cheng


There are a lot of built-in tableApi&SQL functions: https://ci.apache.org/projects/flink/flink-docs-master/dev/table/functions.html

Take {{TEMPORAL.extract(TIMEINTERVALUNIT)}} as an example, we have an example for it.
{code:java}
E.g., '2006-06-05'.toDate.extract(DAY) returns 5; '2006-06-05'.toDate.extract(QUARTER) returns 2.
{code}

The example is very helpful for users who are not familiar with the udf. And I think it would be great if we can add an example for every built-in function.




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