Date check constraint

Please can I get some help with a check constraint.

The Table is called the TITLE and the attribute is TI_RELDATE (a date). I am wanting to make sure that it is between 1930 and the date of the day.
Is this something like this:

CONSTRAINT TITLE_ck_TI_RELDATE CHECK (TI_RELDATE between 1930 and GETDATE())

Canning

GETDATE()-based you come from the side of SQL Server of the barrier. Literals in Oracle date are 'yyyy-mm-dd ". Now the part 'getdate '. What exactly are you trying to do? Make sure that the inserted/updated date to date is not a later date? If so, you need a trigger for this. Check constraint can do is make sure you inserted/updated date is 1930 or higher:

alter table tbl
  add constraint tbl_chk1
    check(
          dt >= date '1930-01-01'
         )
/

Switch to make sure that the inserted/updated date to date is not a later date:

create or replace
  trigger tbl_bir
    before insert
        or update
    of tbl
    for each row
    begin
        if dt > sysdate
          then
            raise_application_error(-20900,'Column dt value can't be a future date.');
        end if;
end;
/

SY.

Tags: Database

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