Moin Akther wrote:
> We want to add a column on table size of 1.5TB, we have to perform this activity with minimal downtime.
>
> What are the best practises to add a column on huge table ?
>
> How much time alter statement will take to add column ?
>
> Any alternate solution other than alter statement to add column ?
>
> Will adding a new column on a huge table generate huge WAL files ?
As a quick experiment would have told you, adding a column without a DEFAULT
clause is very fast. Since v11, it is fast even if the new column has a
DEFAULT clause.
Yours,
Laurenz Albe
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Cybertec | https://www.cybertec-postgresql.com
