#31 Finding Employees by Total Payments
The following tables are given:
Persons
id | name
1 Petya
2 Ivan
3 Misha
...
Payments
id | Person_id | Value
1 1 9
2 1 20
3 3 15...
The relationship between the tables is one-to-many, and an employee may have several payments or none at all.
Find employees whose total payment amount is greater than 20.
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