| On delete set default [message #22044] |
Thu, 19 September 2002 02:19  |
woody
Messages: 1
Registered: September 2002
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Junior Member |
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How to specify foreign key constraint in create table statement.
I have two tables. Emp and Dept.
create statement as follows:
create table emp
(empid char(4),
ename char(20),
dno char(3) not null default 1,
primary key (eid),
foreign key (dno) references dept(dnumber)on delete set default;
create table dept
(dnumber char(3),
dname char(10),
primary key (dnumber);
when specifying this statement "dno char(3) not null default 1" in oracle it's gives an error on 'default' How can I specify 'a default value for a FK'
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| Re: On delete set default [message #22056 is a reply to message #22044] |
Thu, 19 September 2002 09:14  |
Todd Barry
Messages: 4819
Registered: August 2001
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Senior Member |
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Just put the default value first:
dno char(3) default 1 not null
Also, the 'on delete set default' is incorrect (the only options are 'cascade' and 'set null').
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