Adrian Klaver <adrian.kla...@aklaver.com> writes: > On 05/04/2017 07:00 AM, Tom Lane wrote: >> No, certainly not. The radix column says what the units of measurement >> are, not that the values in the precision column aren't decimal. So radix >> 2 indicates that precision 32 means "32 bits", not "32 decimal digits".
> Alright now I am confused: > https://www.postgresql.org/docs/9.6/static/infoschema-columns.html > "numeric_precision cardinal_number > If data_type identifies a numeric type, this column contains the > (declared or implicit) precision of the type for this column. The > precision indicates the number of significant digits. It can be > expressed in decimal (base 10) or binary (base 2) terms, as specified in > the column numeric_precision_radix. For all other data types, this > column is null. > " I'm not here to defend the wording in our documentation ;-) Perhaps this would be clearer if it said "measured in ... digits" rather than "expressed in ... terms"? It should probably also say "identifies a numeric type of restricted precision", since for example it'll be null for a column that's NUMERIC but has no typmod. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
