ORA-02253: constraint specification not allowed here

问题

create table log_table(
log_id varchar2(1000) primary key,
voter_ID varchar2(1000),
date_logged date
CONSTRAINT abc FOREIGN KEY (voter_ID) REFERENCES voters(voter_ID)
)

The table works when i create it without date element. But when i add the date element to it says:

ORA-02253: constraint specification not allowed here

回答1:

The table works when i create it without date element

create table log_table(
log_id varchar2(1000) primary key,
voter_ID varchar2(1000),   -- comma
CONSTRAINT abc FOREIGN KEY (voter_ID) REFERENCES voters(voter_ID)
)

You have to add , before constraint:

create table log_table(
log_id varchar2(1000) primary key,
voter_ID varchar2(1000),
date_logged date, -- here
CONSTRAINT abc FOREIGN KEY (voter_ID) REFERENCES voters(voter_ID)
)

I would also reconsider datatype of log_id/voter_id as (NUMBER/INTEGER).

回答2:

Try this:

create table log_table(
log_id varchar2(1000) primary key,
voter_ID varchar2(1000) CONSTRAINT abc REFERENCES voters(voter_ID)
)

来源：https://stackoverflow.com/questions/45751511/ora-02253-constraint-specification-not-allowed-here