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I designing clustered column store indexed fact tables.

Later on many new columns might be added to these currently ~90 columns tables.

How adding new nullable column is affected by the size (number of rows) of the table? Is it a metadata only operation, or some data reorganization goes on under the hood which i need to take into account?

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  • Roughly how many rows are in the table?
    – J.D.
    Jan 27 at 12:54
  • @J.D. 300-400 million rows.
    – Avi
    Jan 28 at 8:59

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