Re: bit type external representation
От | Christopher Kings-Lynne |
---|---|
Тема | Re: bit type external representation |
Дата | |
Msg-id | GNELIHDDFBOCMGBFGEFOOECJCDAA.chriskl@familyhealth.com.au обсуждение исходный текст |
Ответ на | bit type external representation (Thomas Lockhart <lockhart@fourpalms.org>) |
Список | pgsql-hackers |
> for binary and hexadecimal representations. But at the moment we don't > explicitly handle both of these cases as bit strings; the hex version is > converted to decimal in the scanner (*really* early in the parsing > stage) and then handled as an integer. > > It looks like our current bit string type support looks for a "B" or "X" > embedded in the actual input string, rather than outside the quote as in > the standard. Postgres supports both: test=# create table test (a bit(3)); CREATE test=# insert into test values (B'101'); INSERT 3431020 1 test=# insert into test values (b'101'); INSERT 3431021 1 test=# insert into test values ('B101'); INSERT 3431022 1 test=# insert into test values ('b101'); INSERT 3431023 1 test=# select * from test; a -----101101101101 (4 rows) In fact, some of our apps actually _rely_ on the old 'b101' syntax... Although these could be changed with some effort... Chris
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