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112 changes: 112 additions & 0 deletions solutions.sql
Original file line number Diff line number Diff line change
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---QUERY 1---
SELECT client_id
FROM client
WHERE district_id = 1
LIMIT 5;

---QUERY 2---
SELECT client_id
FROM client
WHERE district_id = 72
ORDER BY client_id DESC
LIMIT 1;

---QUERY 3---
SELECT amount
FROM loan
ORDER BY amount
LIMIT 3;

---QUERY 4---
SELECT DISTINCT status
FROM loan
ORDER BY status ASC;

---QUERY 5---
SELECT loan_id
FROM loan
ORDER BY payments DESC
LIMIT 1;

---QUERY 6---
SELECT account_id, amount
FROM loan
ORDER BY account_id
LIMIT 5;

---QUERY 7---
SELECT account_id
FROM loan
WHERE duration = 60
ORDER BY amount
LIMIT 5;

---QUERY 8---
SELECT DISTINCT k_symbol
FROM `order`
ORDER BY k_symbol;

---QUERY 9---
SELECT order_id
FROM `order`
WHERE account_id = 34
ORDER BY order_id;

---QUERY 10---
SELECT DISTINCT account_id
FROM `order`
WHERE order_id BETWEEN 29540 AND 29560
ORDER BY account_id;

---QUERY 11---
SELECT amount
FROM `order`
WHERE account_to = 30067122;

---QUERY 12---
SELECT trans_id, date, type, amount
FROM trans
WHERE account_id = 793
ORDER BY date DESC
LIMIT 10;

---QUERY 13---
SELECT district_id, COUNT(*) AS num_clients
FROM client
WHERE district_id < 10
GROUP BY district_id
ORDER BY district_id;

---QUERY 14---
SELECT type, COUNT(*) AS num_cards
FROM card
GROUP BY type
ORDER BY num_cards DESC;

---QUERY 15---
SELECT account_id, SUM(amount) AS total_amount
FROM loan
GROUP BY account_id
ORDER BY total_amount DESC
LIMIT 10;

---QUERY 16---
SELECT date, COUNT(*) AS num_loans
FROM loan
WHERE date < 930907
GROUP BY date
ORDER BY date DESC;

---QUERY 17---
SELECT date, duration, COUNT(*) AS num_loans
FROM loan
WHERE date BETWEEN 971201 AND 971231
GROUP BY date, duration
ORDER BY date ASC, duration ASC;

---QUERY 18---
SELECT account_id, type, SUM(amount) AS total_amount
FROM trans
WHERE account_id = 396
GROUP BY type
ORDER BY type ASC;