Re: [SQL] SELECT... BETWEEN 'P' and 'Z'
От | Bruce Momjian |
---|---|
Тема | Re: [SQL] SELECT... BETWEEN 'P' and 'Z' |
Дата | |
Msg-id | 199901100629.BAA21372@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [SQL] SELECT... BETWEEN 'P' and 'Z' ("Tim Perdue, The Des Moines City.net" <tim@dmcity.net>) |
Список | pgsql-sql |
[Charset iso-8859-1 unsupported, filtering to ASCII...] > What I did was make the Z lowercase, since lowercase Z would be a bigger > number in the ASCII character set. > > So now I'm doing "where x between 'P' and 'z';" > > and I get everything that I want. > I think I know your problem. Look at this: test=> create table test5 (x varchar(5)); CREATE test=> insert into test5 values ('Z '); INSERT 18698 1 test=> insert into test5 values ('P'); INSERT 18699 1 test=> insert into test5 values ('S'); INSERT 18700 1 test=> insert into test5 values ('Z'); INSERT 18701 1 test=> select * from test5 where x between 'P' and 'Z'; x - P S Z (3 rows) Notice in a varchar field, spaces are significant. This is not true in char(5) field, so 'Z ' is not between 'P' and 'Z'. We can change this, but I think this the way it is supposed to work. Using < and > yields the same result. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
В списке pgsql-sql по дате отправления: