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# Testing for holidays, part 1

I saw your previous solution for counting the number of work days. How can I modify it to not count dates in my...

holiday table?

```CREATE TABLE  holiday
(
id         NUMBER (10)    PRIMARY KEY,
start_dt   DATE           NOT NULL,
end_dt     DATE           NOT NULL,
cmnt       VARCHAR2 (100)
);
```

I've attached some sample data for the table.

You've found a convenient way to store your holiday data, I assume you also have a convenient way to retrieve it, such as a function that takes a date as an argument and returns one value (e.g. a positive number) if that date is a holiday, or another value (e.g. 0) if it's not a holiday. If you have such a function, simply add it to the IF statement that tests if you want to skip a date:

```CREATE OR REPLACE FUNCTION  approval_dt
(
in_event_dt  IN  DATE,    -- Starting date
in_day_cnt   IN  NUMBER   -- Number of "work" days
)
RETURN  DATE
IS
BEGIN
IF    TO_CHAR (in_event_dt, 'Dy') IN ('Thu', 'Fri')
OR  holiday_num (in_event_dt) > 0
THEN      -- On off-days, skip ahead with same count
RETURN  approval_dt ( in_event_dt + 1,
in_day_cnt
);
ELSIF  in_day_cnt <= 0
THEN      -- this is the day wanted
RETURN  in_event_dt;
ELSE      -- skip ahead and count down
RETURN  approval_dt ( in_event_dt + 1,
in_day_cnt - 1
);
END IF;
END;
```

If you don't have a function like that, see the next page.

### Sample Data

```INSERT INTO  holiday
(
id,
start_dt,
end_dt,
cmnt
)
VALUES
(
holiday_id_seq.NEXTVAL,
'13-Oct-2003',
'13-Oct-2003',
'Columbus Day'
);

INSERT INTO  holiday
(
id,
start_dt,
end_dt,
cmnt
)
VALUES
(
holiday_id_seq.NEXTVAL,
'27-Nov-2003',
'28-Nov-2003',
'Thanksgiving (Thursday); business closed Friday, too'
);
```

This was last published in September 2003

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