Bruce Momjian <pgman@candle.pha.pa.us> writes:
>> That would work, although we would probably save further questions in the
>> future if we had the longer explanation on the FAQ or pointed the user to
>> see the Data Types section of the Docs for more detail.. Then
>> on the data type section mention (if it already doesn't have it) how the
>> bitmap is used when there are NULLs.
> OK, I will try to get something into the datatypes section about NULL
> storage.
I don't think it belongs in Datatypes, but in Performance Tips.
In general, Datatypes is talking about features, not performance or
internal implementation details.
regards, tom lane