On Tue, Oct 18, 2022 at 8:53 AM Dominique Devienne <ddevienne@gmail.com> wrote:
Hi. I'm surprised by the result for bit(3) and char, when calling pg_column_size().
Why 6, instead of 1? The doc does mention 5-8 bytes overhead, but I expected those for varying bit, not fixed-sized bit typed values. How come?
The base type is what matters, if the length of the actual type is a parameter (the (n) part) the underlying type must be variable, and thus has a component that says how long the actually stored value is.
How does one store as compactedly as possible several small enums, on millions of rows?
