SQL Server: Add Columns When In Production Environment -

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are there issues/problems related adding new columns (not indexed) table when database online. assume database quite busy on constant basis , table in question has on 1'000'000 records. thanks.

well, adding column running system cause interruptions , gobble system resources, @ best, database feel slow, @ worst, people won't able query , results.

you need find window of quiet time - e.g. during night or on weekend or something.


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