Re: SQL Statement Help needed
От | Andreas Kretschmer |
---|---|
Тема | Re: SQL Statement Help needed |
Дата | |
Msg-id | 20051204133609.GA2792@kaufbach.delug.de обсуждение исходный текст |
Ответ на | SQL Statement Help needed ("Michael Avila" <Michael.Avila.1@sbcglobal.net>) |
Список | pgsql-sql |
Michael Avila <Michael.Avila.1@sbcglobal.net> schrieb: > I am not much of a SQL guru so I am having trouble trying to figure out how > to format a SQL statement. > > I have a table with members named members. Each member has only 1 record. > Then I have a table with member telephone numbers in it name > membertelephones. A member can have more than one telephone number (home, > work, cell, pager, fax, etc.). I want to print out the telephone numbers of test=# select * from member;id | name ----+--------- 1 | andreas 2 | anja (2 rows) test=# select * from member_number ;id | number ----+-------- 1 | 12345 1 | 45678 2 | 232323 (3 rows) > the members. Is it possible to do it in one SQL statement like with a JOIN > or something or do I need to get the members and then loop through the > membertelephones to get the telephone numbers? Is it possible to do a JOIN > with a table with one record with a table with multiple records? > > SELECT * FROM member > > SELECT * FROM membertelephone WHERE member_id = the id from the above SELECT test=# select * from member_number where id = (select id from member where name = 'andreas');id | number ----+-------- 1 | 12345 1 | 45678 (2 rows) Btw.: you should use referential integrity between this tables: t=# \d member_number Table "public.member_number"Column | Type | Modifiers --------+-------------------+-----------id | integer |number | character varying | Foreign-key constraints: "member_number_id_fkey" FOREIGN KEY (id) REFERENCES member(id) Btw.: on your mail there was a odd attachment 'winmail.dat' HTH, Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°
В списке pgsql-sql по дате отправления: