How do I query for dollar amounts that have too much precision?

Question

I've got the following table schema:

CREATE TABLE [items] (
    [qty] INT NOT NULL,
    [price] MONEY NOT NULL,
    [subtotal] MONEY NOT NULL,
    ...
);

Some of the rows look like this:

+--------+-------+----------+
| qty    | price | subtotal |
+--------+-------+----------+
| 100000 | 0.017 | 1700.00  |
+--------+-------+----------+

I don't like fractional cents and this data isn't that important, so I want to adjust any rows that have fractional-cent prices. So I'd change the example row above to look like this instead:

+-----+---------+----------+
| qty | price   | subtotal |
+-----+---------+----------+
| 1   | 1700.00 | 1700.00  |
+-----+---------+----------+

If I used this query:

SELECT * FROM [items]
WHERE ([price] * 1000) % 10 > 0

...that would get me all the rows where the price goes out to precision 3. And that's useful for this example where the price is 1.7¢. But what if it's something like 0.002¢ (i.e. precision 5)? Do I need to write a query with a bunch of OR statements for each precision I think it might be, or is there a simpler way to say WHERE [price] (has precision ≥ 3)?

Answer 1

You could round the price to two decimal places, and then compare it to the original value:

WHERE ROUND([price], 2) <> [price]