init

up_and_down_read data.sql

@@ -0,0 +1,21 @@
+-- Команды чтения:
+
+-- Полное чтение таблицы
+-- SELECT * FROM `up_and_down`.`user`;
+
+-- Частичное чтение таблицы
+-- SELECT * FROM `up_and_down`.`user` WHERE login = 'login3';
+-- SELECT * FROM `up_and_down`.`user` WHERE login <> 'login3';
+-- SELECT * FROM `up_and_down`.`mania` WHERE level > 5;
+-- SELECT * FROM `up_and_down`.`mania` WHERE (level > 3) AND (level < 9);
+-- SELECT * FROM `up_and_down`.`mania` WHERE (level > 3) OR (level = 1);
+-- SELECT * FROM `up_and_down`.`mania` WHERE NOT (level > 3) OR (level = 5);
+-- SELECT * FROM `up_and_down`.`mania` WHERE level IS NOT NULL;
+
+-- Более продвинутые команды
+-- SELECT DISTINCT hashed_password from `up_and_down`.`user`;
+-- SELECT * FROM `up_and_down`.`mania` ORDER BY level ASC;
+-- SELECT * FROM `up_and_down`.`mania` ORDER BY level DESC;
+-- SELECT * FROM `up_and_down`.`mania` WHERE (level > 3) AND (level < 9) AND (level <> 6) ORDER BY level DESC;
+-- SELECT * FROM `up_and_down`.`mania` LIMIT 5;
+-- SELECT * FROM `up_and_down`.`mania` ORDER BY description DESC LIMIT 5;