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Find the return value If no record founded...

1. SELECT SUM(price) FROM product WHERE id>100

2. SELECT COUNT(price) FROM product WHERE id>100

3. SELECT AVG(price) FROM product WHERE id>100

4. SELECT MIN(price) FROM product WHERE id>100

Explanation:

SUM () returns NULL

COUNT(*) returns 0

AVG(price) returns NULL

MIN(price) returns NULL

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