| | 1 | ===== Просечно трошење во последните 3 дена за цел систем |
| | 2 | Просечно дневно трошење за последните три дена, земајќи ги предвид сите трансакции: |
| | 3 | {{{#!sql |
| | 4 | SELECT |
| | 5 | AVG(daily_spending) AS average_spending_last_3_days |
| | 6 | FROM ( |
| | 7 | SELECT |
| | 8 | t.date::date AS transaction_date, |
| | 9 | SUM(tb.spent_amount) AS daily_spending |
| | 10 | FROM |
| | 11 | transaction t |
| | 12 | JOIN |
| | 13 | transaction_breakdown tb ON t.transaction_id = tb.transaction_id |
| | 14 | WHERE |
| | 15 | t.date >= CURRENT_DATE - INTERVAL '2 DAY' |
| | 16 | AND t.date < CURRENT_DATE + INTERVAL '1 DAY' |
| | 17 | GROUP BY |
| | 18 | t.date::date |
| | 19 | ) daily_totals; |
| | 20 | }}} |