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pg_upgarde: The control data check for equal max_index_keys in old and new version - Mailing list pgsql-novice

From neha khatri
Subject pg_upgarde: The control data check for equal max_index_keys in old and new version
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Msg-id CAFO0U+_uiguw7PDTg6QUKhXg=s0Zw=QNGLZASuupagX-16zP0w@mail.gmail.com
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Responses Re: pg_upgarde: The control data check for equal max_index_keys in old and new version
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I have recently started working on Postgresql and I was looking in the the pg_upgrade code. pg_upgrade checks index control data(max_index_keys) to be equal in the old and new version.

I would like to understand why the number of index columns should be equal in new and old versions. Can the number of maximum index columns not be changed from one release to another release.

Neha

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