Initial commit.

files_for_lab/solutions.sql

@@ -0,0 +1,53 @@
+-- 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 ASC LIMIT 3;
+
+-- QUERY 4: 
+SELECT DISTINCT status FROM loan ORDER BY status;
+
+-- 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 ASC LIMIT 5;
+
+-- QUERY 7: 
+SELECT account_id FROM loan WHERE duration=60 ORDER BY amount ASC;
+
+-- QUERY 8: 
+SELECT DISTINCT k_symbol FROM 'order' ORDER BY k_symbol ASC;
+
+-- QUERY 9: 
+SELECT order_id FROM 'order' WHERE account_id=34;
+
+-- QUERY 10: 
+SELECT DISTINCT account_id FROM 'order' WHERE order_id BETWEEN 29540 AND 29560;
+
+-- 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 client_count FROM client WHERE district_id < 10 GROUP BY district_id ORDER BY district_id ASC;
+
+-- QUERY 14: 
+SELECT type, COUNT (*) AS card_count FROM card GROUP BY type ORDER BY card_count DESC;
+
+-- QUERY 15: 
+SELECT account_id, SUM(amount) AS total_loan_amount FROM loan GROUP BY account_id ORDER BY total_loan_amount DESC LIMIT 10;
+
+-- QUERY 16: 
+SELECT date, COUNT(*) AS loan_count FROM loan WHERE date < 930907 GROUP BY date ORDER BY date DESC;
+
+-- QUERY 17:
+SELECT DISTINCT date, duration, COUNT(*) AS loan_count 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 sum_amount FROM trans WHERE account_id = 396 GROUP BY account_id, type ORDER BY type ASC;