Details
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Wish
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Status: Open
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Trivial
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Resolution: Unresolved
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None
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Description
It would be nice in several cases to be able to alias column names.
Say someone in your company CREATEd a TABLE called important_but_named_poorly (alvin BIGINT, theodore BIGINT, simon STRING) PARTITIONED BY (dave STRING), that indexes the relationship between an actor (alvin), a target (theodore), and the interaction between them (simon), partitioned based on the date string (dave). Renaming the columns would break a million pipelines that are important but ownerless.
It would be awesome to define an aliasing system as such:
ALTER TABLE important_but_named_poorly REPLACE COLUMNS (actor BIGINT AKA alvin, target BIGINT AKA theodore, ixn STRING AKA simon) PARTITIONED BY (ds STRING AKA dave);
...which would mean that any user could, e.g., use the term "dave" to refer to ds if they really wanted to.