feat: add sql leetcode (#3)

* feat: add sql

* feat: add sql

* feat: add sql

* feat: add sql

sql/src/main/java/com/leetcode/aggregation/middle/food_given.sql

@@ -18,4 +18,30 @@ insert into Delivery (delivery_id, customer_id, order_date, customer_pref_delive
                                                                                                  '2019-08-11', '2019-08-13');
 insert into Delivery (delivery_id, customer_id, order_date, customer_pref_delivery_date) values ('7', '4',
                                                                                                  '2019-08-09', '2019-08-09');
+
+select
+    round(sum(instance_order) / count(instance_order), 2)* 100 as immediate_percentage
+from(
+    select
+        if(min(order_date)=customer_pref_delivery_date, 1, 0 ) as instance_order
+    from
+        Delivery
+    group by
+        customer_id
+    ) as t;
 
+
+select
+    round(sum(order_date = customer_pref_delivery_date) * 100 / count(*), 2) as immediate_percentage
+from
+    Delivery
+where
+    (customer_id, order_date)
+    in (
+        select
+            customer_id, min(order_date)
+        from
+            Delivery
+        group by
+            customer_id
+)

sql/src/main/java/com/leetcode/aggregation/middle/game_play.sql

@@ -0,0 +1,27 @@
+
+-- 550. 游戏玩法分析 IV
+Create table If Not Exists Activity_1 (player_id int, device_id int, event_date date, games_played int);
+Truncate table Activity_1;
+insert into Activity_1 (player_id, device_id, event_date, games_played) values ('1', '2', '2016-03-01', '5');
+insert into Activity_1 (player_id, device_id, event_date, games_played) values ('1', '2', '2016-03-02', '6');
+insert into Activity_1 (player_id, device_id, event_date, games_played) values ('2', '3', '2017-06-25', '1');
+insert into Activity_1 (player_id, device_id, event_date, games_played) values ('3', '1', '2016-03-02', '0');
+insert into Activity_1 (player_id, device_id, event_date, games_played) values ('3', '4', '2018-07-03', '5');
+
+select
+    ifnull(round(count(distinct result.player_id) / count(distinct Activity_1.player_id), 2), 0) as fraction
+from(
+        select
+            expected.player_id as player_id
+        from (
+                 select
+                     player_id,
+                     DATE_ADD(min(event_date), interval 1 day ) as second_sign
+                 from
+                     Activity_1
+                 group by
+                     player_id
+             )as expected, Activity_1
+        where
+                expected.player_id = Activity_1.player_id and expected.second_sign = Activity_1.event_date
+    ) as result, Activity_1

sql/src/main/java/com/leetcode/high_search/easy/employee_department.sql

@@ -0,0 +1,28 @@
+Create table If Not Exists Employee_4 (employee_id int, department_id int, primary_flag ENUM('Y','N'));
+Truncate table Employee_4;
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('1', '1', 'N');
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('2', '1', 'Y');
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('2', '2', 'N');
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('3', '3', 'N');
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('4', '2', 'N');
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('4', '3', 'Y');
+insert into Employee_4 (employee_id, department_id, primary_flag) values ('4', '4', 'N');
+
+with t as (
+    select
+        employee_id,
+        department_id,
+        primary_flag,
+        count(*) over (partition by employee_id) as count_over
+    from
+        Employee_4
+)
+
+select
+    employee_id,
+    department_id
+from
+    t
+where
+    count_over=1
+   or primary_flag='Y'

sql/src/main/java/com/leetcode/high_search/easy/product_price_date.sql

@@ -0,0 +1,40 @@
+
+Create table If Not Exists Products (product_id int, new_price int, change_date date);
+Truncate table Products;
+insert into Products (product_id, new_price, change_date) values ('1', '20', '2019-08-14');
+insert into Products (product_id, new_price, change_date) values ('2', '50', '2019-08-14');
+insert into Products (product_id, new_price, change_date) values ('1', '30', '2019-08-15');
+insert into Products (product_id, new_price, change_date) values ('1', '5', '2019-08-16');
+insert into Products (product_id, new_price, change_date) values ('2', '65', '2019-08-17');
+insert into Products (product_id, new_price, change_date) values ('3', '20', '2019-08-18');
+
+
+select
+    p1.product_id,
+    ifnull(p2.new_price, 10) as price
+from (
+    select
+        distinct product_id
+    from
+        Products
+     ) as p1 -- 所有的产品
+left join (
+    select
+        product_id,
+        new_price
+    from
+        Products
+    where (product_id, change_date)
+        in (
+            select
+                product_id,
+                max(change_date)
+            from
+                Products
+            where
+                change_date <= '2019-08-16'
+            group by
+                product_id
+        )
+) as p2 -- 在 2019-08-16 之前有过修改的产品和最新的价格
+on p1.product_id = p2.product_id

sql/src/main/java/com/leetcode/high_search/easy/search_manager_employee.sql

@@ -0,0 +1,56 @@
+-- 1731. 每位经理的下属员工数量
+
+
+use leetcode;
+Create table If Not Exists Employees_3(employee_id int, name varchar(20), reports_to int, age int);
+Truncate table Employees_3;
+insert into Employees_3 (employee_id, name, reports_to, age) values ('9', 'Hercy', NULL, '43');
+insert into Employees_3 (employee_id, name, reports_to, age) values ('6', 'Alice', '9', '41');
+insert into Employees_3 (employee_id, name, reports_to, age) values ('4', 'Bob', '9', '36');
+insert into Employees_3 (employee_id, name, reports_to, age) values ('2', 'Winston', NULL, '37');
+
+select
+    *
+from
+    Employees_3 as e
+left join
+    Employees_3 as t
+on
+    e.employee_id = t.reports_to
+where
+    t.name is not null;
+
+select
+    e.employee_id,
+    e.name,
+    t.age
+from
+    Employees_3 as e
+        left join
+    Employees_3 as t
+    on
+            e.employee_id = t.reports_to
+where
+    t.name is not null;
+
+select
+    a.employee_id,
+    a.name,
+    count(a.name) as reports_count ,
+    round(avg(a.age)) as average_age
+from(
+        select
+            e.employee_id,
+            e.name,
+            t.age
+        from
+            Employees_3 as e
+                left join
+            Employees_3 as t
+            on
+                    e.employee_id = t.reports_to
+        where
+            t.name is not null
+    ) as a
+group by
+    a.employee_id

sql/src/main/java/com/leetcode/highlevel/delete_person_repeat.sql

@@ -0,0 +1,22 @@
+-- 196. 删除重复的电子邮箱
+Create table If Not Exists Person (id int, email varchar(255));
+Truncate table Person;
+insert into Person (id, email) values ('1', '[email protected]');
+insert into Person (id, email) values ('2', '[email protected]');
+insert into Person (id, email) values ('3', '[email protected]');
+
+
+delete from
+    Person
+where id not in (
+        select
+            min_id
+        from (
+           select
+               min(id) as min_id
+           from
+               Person
+           group by
+               email
+       )as t
+    );

sql/src/main/java/com/leetcode/highlevel/fix_name.sql

@@ -0,0 +1,17 @@
+-- 1667. 修复表中的名字
+Create table If Not Exists Users_3 (user_id int, name varchar(40));
+Truncate table Users_3;
+insert into Users_3 (user_id, name) values ('1', 'aLice');
+insert into Users_3 (user_id, name) values ('2', 'bOB');
+
+
+select user_id,
+       concat(upper(left(name,1)), lower(right(name,length(name)-1))) as name
+from Users_3
+order by
+    user_id
+
+
+select
+
+from

sql/src/main/java/com/leetcode/highlevel/list_all_order.sql

@@ -0,0 +1,48 @@
+
+use leetcode;
+Create table If Not Exists Products_1 (product_id int, product_name varchar(40), product_category varchar(40));
+Create table If Not Exists Orders (product_id int, order_date date, unit int);
+Truncate table Products_1;
+insert into Products_1 (product_id, product_name, product_category) values ('1', 'Leetcode Solutions', 'Book');
+insert into Products_1 (product_id, product_name, product_category) values ('2', 'Jewels of Stringology', 'Book');
+insert into Products_1 (product_id, product_name, product_category) values ('3', 'HP', 'Laptop');
+insert into Products_1 (product_id, product_name, product_category) values ('4', 'Lenovo', 'Laptop');
+insert into Products_1 (product_id, product_name, product_category) values ('5', 'Leetcode Kit', 'T-shirt');
+Truncate table Orders;
+insert into Orders (product_id, order_date, unit) values ('1', '2020-02-05', '60');
+insert into Orders (product_id, order_date, unit) values ('1', '2020-02-10', '70');
+insert into Orders (product_id, order_date, unit) values ('2', '2020-01-18', '30');
+insert into Orders (product_id, order_date, unit) values ('2', '2020-02-11', '80');
+insert into Orders (product_id, order_date, unit) values ('3', '2020-02-17', '2');
+insert into Orders (product_id, order_date, unit) values ('3', '2020-02-24', '3');
+insert into Orders (product_id, order_date, unit) values ('4', '2020-03-01', '20');
+insert into Orders (product_id, order_date, unit) values ('4', '2020-03-04', '30');
+insert into Orders (product_id, order_date, unit) values ('4', '2020-03-04', '60');
+insert into Orders (product_id, order_date, unit) values ('5', '2020-02-25', '50');
+insert into Orders (product_id, order_date, unit) values ('5', '2020-02-27', '50');
+insert into Orders (product_id, order_date, unit) values ('5', '2020-03-01', '50');
+
+
+# Write your MySQL query statement below
+
+select
+    product_name,
+    sum(unit)
+from (
+         select
+             o.product_id,
+             p.product_name,
+             o.unit
+         from
+             Orders as o
+         left join
+             Products_1 as p
+         on
+            o.product_id = p.product_id
+         where
+             o.order_date between '2020-02-01' and '2020-02-29'
+     ) as t
+group by
+    product_id
+having
+        sum(unit) >= 100;

sql/src/main/java/com/leetcode/highlevel/search_patient.sql

@@ -0,0 +1,26 @@
+
+Create table If Not Exists Patients (patient_id int, patient_name varchar(30), conditions varchar(100));
+Truncate table Patients;
+insert into Patients (patient_id, patient_name, conditions) values ('1', 'Daniel', 'YFEV COUGH');
+insert into Patients (patient_id, patient_name, conditions) values ('2', 'Alice', '');
+insert into Patients (patient_id, patient_name, conditions) values ('3', 'Bob', 'DIAB100 MYOP');
+insert into Patients (patient_id, patient_name, conditions) values ('4', 'George', 'ACNE DIAB100');
+insert into Patients (patient_id, patient_name, conditions) values ('5', 'Alain', 'DIAB201');
+
+
+select patient_id,
+       patient_name,
+       conditions
+from
+    Patients
+where
+    conditions like '% DIAB1%' or conditions like 'DIAB1%'
+
+
+
+select patient_id,
+       patient_name,
+       conditions
+from Patients
+where
+    (conditions regexp '^DIAB1') or (conditions regexp '\\sDIAB1'); -- ok

sql/src/main/java/com/leetcode/search/easy/employee_bonus.sql

@@ -0,0 +1,20 @@
+
+Create table If Not Exists Employee (empId int, name varchar(255), supervisor int, salary int);
+Create table If Not Exists Bonus (empId int, bonus int);
+Truncate table Employee;
+insert into Employee (empId, name, supervisor, salary) values ('3', 'Brad', NULL, '4000');
+insert into Employee (empId, name, supervisor, salary) values ('1', 'John', '3', '1000');
+insert into Employee (empId, name, supervisor, salary) values ('2', 'Dan', '3', '2000');
+insert into Employee (empId, name, supervisor, salary) values ('4', 'Thomas', '3', '4000');
+Truncate table Bonus;
+insert into Bonus (empId, bonus) values ('2', '500');
+insert into Bonus (empId, bonus) values ('4', '2000');
+
+select
+    name, bonus
+from
+    Employee as a
+        left join
+    Bonus as b
+    on a.empId = b.empId
+where bonus < 1000 or bonus is null;

sql/src/main/java/com/leetcode/search/easy/machine_avg_process_time.sql

@@ -0,0 +1,26 @@
+
+-- 1661. 每台机器的进程平均运行时间
+use leetcode;
+Create table If Not Exists leetcode.Activity (machine_id int, process_id int, activity_type ENUM('start', 'end'),
+    timestamp
+    float);
+Truncate table leetcode.Activity;
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('0', '0', 'start', '0.712');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('0', '0', 'end', '1.52');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('0', '1', 'start', '3.14');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('0', '1', 'end', '4.12');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('1', '0', 'start', '0.55');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('1', '0', 'end', '1.55');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('1', '1', 'start', '0.43');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('1', '1', 'end', '1.42');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('2', '0', 'start', '4.1');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('2', '0', 'end', '4.512');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('2', '1', 'start', '2.5');
+insert into Activity (machine_id, process_id, activity_type, timestamp) values ('2', '1', 'end', '5');
+
+select
+    machine_id,
+    ROUND(SUM(CASE WHEN activity_type='end' THEN timestamp ELSE -timestamp END)/count(distinct process_id), 3) as processing_time
+from
+    Activity
+group by machine_id;