SQL> -- State a check constraint that check the value of more than one column.
SQL> -- The following example makes sure that the value of begin_ is smaller than the value of end_.
SQL>
SQL> create table myTable(
2 begin_ number,
3 end_ number,
4 value_ number,
5 check (begin_ < end_)
6 );
Table created.
SQL>
SQL> insert into myTable values(1, 3, 4);
1 row created.
SQL> insert into myTable values(2000, 3, 5);
insert into myTable values(2000, 3, 5)
*
ERROR at line 1:
ORA-02290: check constraint (SYS.SYS_C004432) violated
SQL> insert into myTable values(2, 3 ,6);
1 row created.
SQL>
SQL> select * from myTable;
BEGIN_ END_ VALUE_
---------- ---------- ----------
1 3 4
2 3 6
SQL>
SQL> drop table myTable;
Table dropped.
SQL>
SQL>