The following query below displays rows from table1 and table2 in which fields Mascot + Zip match. Great! The problem is this may return multiple matches and possible false positives. To avoid this, I only want the query to return a result if there is only 1 match. My code below will return the Tigers:47483 row. If there is more than 1 match, I do not want anything returned. How do I set up this restriction?

```
Sports1 Table
id    School    Mascot    Zip
1     West      Tigers    47483
2     Central   Trojans   38493
3     Stone     Eagles    38493

Sports2 Table
id    School    Mascot    Zip
1     West      Tigers    47483
2     Central   Trojans   38493
3     Stone     Eagles    38493
4     South     Tigers    47483

SELECT t1.*
FROM Sports1 t1, Sports2 t2
WHERE (t1.Mascot = t2.Mascot AND t1.Zip = t2.Zip) GROUP by t1.id;

```

Any help is much appreciated.