Dual Primary keys
| От | Bantamess |
|---|---|
| Тема | Dual Primary keys |
| Дата | |
| Msg-id | 001601c3eb31$c2fea8e0$6501a8c0@HOMEWITHLINUX обсуждение исходный текст |
| Ответы |
Re: Dual Primary keys
Re: Dual Primary keys Re: Dual Primary keys |
| Список | pgsql-novice |
Hello can any body tell me how to code a table with dual primary keys? The table 'borrower' has two PKs each one has been used in other tables within the same schema as single PKs
Here is what I have tried:
create table borrower(user_id int primary key,
issn varchar(15) primary key);
Error: create table / primary key multiple primary keys for table 'borrower' are not allowed.
I also tried this:
create table borrower(user_id int ,
issn varchar(15),
primary key user_id, issn);
ERROR: parser: parse error at or near "user_id" at character 68
and
create table borrower(user_id int ,
issn varchar(15),
(primary key user_id, issn));
ERROR: parser: parse error at or near "( " at character 56
thanks
Janet
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