[jira] [Created] (FLINK-12028) Add Column Operators(add/rename/drop)

[Shang Yuanchun (Jira)]

sunjincheng created FLINK-12028:
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             Summary: Add Column Operators(add/rename/drop)
                 Key: FLINK-12028
                 URL: https://issues.apache.org/jira/browse/FLINK-12028
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API
    Affects Versions: 1.9.0
            Reporter: sunjincheng
            Assignee: sunjincheng


In this Jira will add column operators/operations as follows:

1)   Table(schema) operators
 * Add columns
 * Replace columns
 * Drop columns
 * Rename columns

See [google doc|https://docs.google.com/document/d/1tryl6swt1K1pw7yvv5pdvFXSxfrBZ3_OkOObymis2ck/edit], And I also have done some [prototype|https://github.com/sunjincheng121/flink/pull/94/files]



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