how to split a column value into multiple rows in flink sql?

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URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/how-to-split-a-column-value-into-multiple-rows-in-flink-sql-tp43564.html

Hi

  For example , a table like this:

   A     B      C

  ------------------

   a1   b1    c1,c2,c3

  -------------------

  how to split c1,c2,c3 into multiple rows like this in flink sql function:

A  B   C
--------
a1  b1  c1
a1  b1  c2
a1  b1  c3 

Thank you

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