Question

I am having a problem with a select statement in MySQL.

I have two statements varying only slightly, the first appears to work but the second does not. The second statement returns 0 results. What am I missing/doing wrong?

Set Variables

SET @maxOK = 1.2;
SET @minOK = .8;

1# NOT BETWEEN

SELECT *, fee - (receipts * -1) AS difference
FROM div.Data1
WHERE (receipts * -1) NOT BETWEEN (fee * @minOK) AND (fee * @maxOkay);

2# BETWEEN

SELECT *, fee - (receipts * -1) AS difference,
          receipts * -1 as rec,
          fee * @minOk as min, fee * @maxOk as max
FROM div.Data1
WHERE (receipts * -1) BETWEEN (fee * @minOK) AND (fee * @maxOkay);

Some Data that should be showing in two but doesn’t

SELECT *, fee - (receipts * -1) AS difference,
          receipts * -1 as rec,
          fee * @minOk as min, fee * @maxOk as max
FROM div.Data1

Answer 1

You have an error in your statement. You have declared @maxOk but are using @maxOkay in your BETWEEN clause.

As @maxOkayisn’t declared anywhere, it’s initialized to NULL so your statement essentially boils down to

SET @maxOK = 1.2;
SET @minOK = .8;

SELECT *
       , fee - (receipts * -1) AS difference
       , receipts * -1 as rec
       , fee * @minOk as min
       , fee * @maxOk as max
FROM Data1
WHERE (receipts * -1) BETWEEN (fee * @minOK) AND NULL

The statement should be

SET @maxOK = 1.2;
SET @minOK = .8;

SELECT *
       , fee - (receipts * -1) AS difference
       , receipts * -1 as rec
       , fee * @minOk as min
       , fee * @maxOk as max
FROM Data1
WHERE (receipts * -1) BETWEEN (fee * @minOK) AND (fee * @maxOK);