Is there a way to create dynamic column when joining a one to many relation tables and bring the child table to parent table's granularity?
For example: parent table has Id as 1 & 2. Child table has 2 record for Id=1 and 3 records for Id=2. It is possible to transpose the child table to parent tables granularity?
I aware of the logic/idea to transpose the child table if i know the maximum of records which will be obtained from child table. But in my case it will be dynamic. For id we will have one record in child table and other Id we may have more than one to N records in the child table which has to be transposed. Do we have anything like pivot in hive to achieve this?
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