Save .sql file for solutions

files_for_lab/solutions.sql

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+SELECT * FROM client LIMIT 10
+
+-- Query 1: Get the id values of the first 5 clients from district_id = 1
+SELECT client_id
+from client 
+WHERE district_id = 1
+LIMIT 5;
+
+-- Query 2: Get the id value of the last client where district_id = 72
+SELECT client_id
+FROM client
+WHERE district_id = 72
+ORDER BY client_id DESC 
+LIMIT 1;
+
+-- Query 3: Get the 3 lowest amounts in the loan table
+SELECT amount
+FROM loan
+ORDER BY amount ASC 
+LIMIT 3;
+
+-- Query 4: Possible values for status in the loan table, ordered alphabetically
+SELECT DISTINCT status 
+FROM loan 
+ORDER BY status ASC;
+
+-- Query 5: loan_id of the highest payment received in the loan table
+SELECT loan_id 
+FROM loan 
+ORDER BY payments DESC 
+LIMIT 1;
+
+-- Query 6: loan amount of the lowest 5 account_ids
+SELECT account_id, amount 
+FROM loan 
+ORDER BY account_id ASC 
+LIMIT 5;
+
+-- Query 7: account_ids with the lowest loan amount that have a loan duration of 60
+SELECT account_id 
+FROM loan 
+WHERE duration = 60 
+ORDER BY amount ASC 
+LIMIT 5;
+
+-- Query 8: Unique values of k_symbol in the order table
+SELECT DISTINCT k_symbol 
+FROM `order`
+ORDER BY k_symbol ASC;
+
+-- Query 9: order_ids of the client with account_id 34
+SELECT order_id 
+FROM `order` 
+WHERE account_id = 34;
+
+-- Query 10: account_ids responsible for orders between order_id 29540 and 29560
+SELECT DISTINCT account_id 
+FROM `order` 
+WHERE order_id BETWEEN 29540 AND 29560;
+
+-- Query 11: Individual amounts sent to (account_to) id 30067122
+SELECT DISTINCT amount
+FROM trans
+WHERE account = 30067122;
+
+-- Query 12: Show trans_id, date, type, and amount of the first 10 transactions from account_id 793 in descending order
+SELECT trans_id, date, type, amount 
+FROM trans 
+WHERE account_id = 793 
+ORDER BY date DESC 
+LIMIT 10;
+
+-- Query 13: Number of clients from each district_id lower than 10
+SELECT district_id, COUNT(client_id) 
+FROM client 
+WHERE district_id < 10 
+GROUP BY district_id 
+ORDER BY district_id ASC;
+
+-- Query 14: Count the number of cards for each type, ranked by most frequent
+SELECT type, COUNT(*) AS total_cards 
+FROM card 
+GROUP BY type 
+ORDER BY total_cards DESC;
+
+-- Query 15: Top 10 account_ids based on the sum of their loan amounts
+SELECT account_id, SUM(amount) AS total_loan 
+FROM loan 
+GROUP BY account_id 
+ORDER BY total_loan DESC 
+LIMIT 10;
+
+-- Query 16: Number of loans issued for each day before (excluding) 930907
+SELECT date, COUNT(*) AS num_loans 
+FROM loan 
+WHERE date < 930907 
+GROUP BY date 
+ORDER BY date DESC;
+
+-- Query 17: Count the number of loans issued per unique loan duration for each day in December 1997
+SELECT date, duration, COUNT(*) 
+FROM loan 
+WHERE date BETWEEN 971201 AND 971231 
+GROUP BY date, duration 
+ORDER BY date ASC, duration ASC
+LIMIT 14;
+
+-- Query 18: Sum the amount of transactions for account_id 396 grouped by type
+SELECT account_id, type, SUM(amount) AS total_amount 
+FROM trans 
+WHERE account_id = 396 
+GROUP BY type 
+ORDER BY type ASC;