SQL Taskbook Level 4.6

Given a table:

user_transactions
id user_id amount payment_type bonuses_increases bonuses_decreases created_at
1 12355 80.50 CARD 0.85 0.00 2023-09-10
2 52421 1700.13 CARD 17.00 1000.00 2023-09-27
3 125355 214.34 CARD 2.14 50.00 2023-09-01
4 9392 596.00 CASH 5.96 0.00 2023-10-08
5 23511 800.18 CASH 8.00 0.00 2023-09-30
6 125355 120.18 CARD 1.20 50.18 2023-10-03
7 52421 1000.12 CASH 10.00 0.00 2023-09-20
8 125355 81.78 CASH 8.17 0.00 2023-09-25
9 52421 509.12 CARD 5.91 100.12 2023-10-07
10 125355 100.50 CASH 1.00 0.00 2023-10-08

Solve the following tasks for it:

Задание 1

Group all checks by users and calculate the check amount. Select those users whose amount is greater than 300.

Задание 2

Group all checks by payment type. Select the payment type and the rounded amount of the checks, also add a condition so that the amount is greater than 5000.

Задание 3

Group all checks by payment type for checks that were created after '2023-10-01'. Select the payment type and the rounded amount of the checks, also add a condition that the amount is less than 4500.