Paris Arcos Solution

SQL/create.sql

@@ -0,0 +1,9 @@
+--CREATE DATABASE
+CREATE DATABASE nameDataBase;
+
+--CREATE TABLE
+CREATE TABLE nameTableSEnded (
+    --row1 typeRow(typeRowLength),
+    id  int(11),
+    userName varchar(100)
+);

SQL/insert.sql

@@ -0,0 +1,26 @@
+
+-- INSERT SIMPLE DATA 
+ INSERT INTO
+ employees (emp_no, birth_date, first_name, last_name, gender, hire_date) 
+ VALUES (1,'1987-09-14','Paris','Arcos','M','2021-10-11');
+
+-- INSERT MULTIPLE DATA 
+ INSERT INTO
+ employees (emp_no, birth_date, first_name, last_name, gender, hire_date) 
+ VALUES 
+ (2,'1981-01-11','Edgar','Arcos','M','2021-10-11'),
+ (3,'1911-11-21','Ana','Guadalupe','F','2021-10-11'),
+ (4,'1983-03-13','Hector','Arcos','M','2021-10-11'),
+ (5,'1984-04-14','Paola','Arcos','M','2021-10-11'),
+ (6,'1985-05-15','Juan','Arcos','M','2021-10-11'),
+ (7,'1986-06-16','Jose','Hernandez','M','2021-10-11'),
+ (8,'1987-07-17','Cristian','Hernandez','M','2021-10-11'),
+ (9,'1988-08-18','Adrian','Gonzalez','M','2021-10-11'),
+ (10,'1989-09-19','Daniel','Quintana','M','2021-10-11'),
+ (11,'1910-10-20','Eduardo','Consuegra','M','2021-10-11'),
+ (12,'1982-02-12','Gledys','Arcos','F','2021-10-11'),
+ (13,'1912-12-22','Jorge','McCuak','M','2021-10-11'),
+ (14,'1913-01-23','Jaime','McCuak','M','2021-10-11'),
+ (15,'1914-02-24','Juan','McCuak','M','2021-10-11'),
+ (16,'1980-11-11','Juan','Espino','M','2021-10-12');
+

SQL/script.sql

@@ -0,0 +1,2 @@
+-- EXECUTE SCRIPT
+source C:\xampp\htdocs\mysql-basics\employees.sql

SQL/select.sql

@@ -0,0 +1,36 @@
+--SELECT + INNER JOIN + CONDITIONAL
+SELECT e.emp_no, first_name, last_name FROM employees as e INNER JOIN  salaries as s 
+ON e.emp_no=s.emp_no WHERE salary > 20000;
+
+--SELECT + INNER JOIN + CONDITIONAL
+SELECT e.emp_no, first_name, last_name FROM employees as e INNER JOIN  salaries as s 
+ON e.emp_no=s.emp_no WHERE salary < 10000;
+
+--SELECT + INNER JOIN + CONDITIONAL (BETWEEN)
+SELECT e.emp_no, first_name, last_name FROM employees as e INNER JOIN  salaries as s 
+ON e.emp_no=s.emp_no WHERE salary BETWEEN 14000 AND 50000;
+
+--SELECT + COUNT 
+SELECT COUNT(emp_no) FROM employees;
+
+--SELECT + COUNT + GROUP BY + HAVING
+SELECT emp_no,COUNT(*) FROM dept_emp GROUP BY emp_no HAVING COUNT(*) > 1;
+
+--SELECT + COUNT + LIKE
+SELECT * FROM titles WHERE from_date LIKE '2019%';
+
+--SELECT + UCASE [CAPITAL LETTERS]
+SELECT UCASE(first_name) FROM employees;
+
+--SELECT + INNER JOIN MULTIPLE + CONDITIONAL
+SELECT e.first_name,e.last_name , d.dept_name FROM employees as e 
+INNER JOIN departments as d INNER JOIN dept_emp as de
+ON  e.emp_no=de.emp_no WHERE  de.dept_no=d.dept_no;
+
+--SELECT + RIGHT JOIN  + GROUP
+SELECT e.first_name,e.last_name, COUNT(d.emp_no) 
+FROM dept_manager as d RIGHT JOIN employees as e 
+ON e.emp_no=d.emp_no GROUP BY e.emp_no;
+
+--SELECT + DISTINCT
+ SELECT DISTINCT first_name FROM employees;

SQL/update.sql

@@ -0,0 +1,16 @@
+-- SIMPLE UPDATE MULTIPLE CONDITIONALS
+UPDATE employees 
+SET first_name= 'Fulano' 
+WHERE first_name='Cristian' and last_name='Hernandez' and birth_date='1987-07-17';
+
+-- MULTIPLE UPDATE
+UPDATE departments
+    SET dept_name = (case 
+                         when dept_no = '1' then 'BACK_end'
+                         when dept_no = '2' then 'FRONT_end'
+                         when dept_no = '3' then 'BDD'
+                         when dept_no = '4' then 'ADMIN'
+                         when dept_no = '5' then 'ILLUST'
+                         when dept_no = '6' then 'HR'
+                    end)
+    WHERE dept_no in ('1', '2','3','4','5','6');

solution.sql

@@ -0,0 +1,206 @@
+--! 1.5.0 EXECUTE SCRIPT !--
+
+-- EXECUTE SCRIPT
+source C:\xampp\htdocs\mysql-basics\employees.sql
+
+--! 1.5.1 INSERT DATA !--
+
+-- INSERT DATA
+ INSERT INTO
+ employees (emp_no, birth_date, first_name, last_name, gender, hire_date) 
+ VALUES (1,'1987-09-14','Paris','Arcos','M','2021-10-11')
+ ;
+
+ -- INSERT MULTIPLE DATA 
+ INSERT INTO
+ employees (emp_no, birth_date, first_name, last_name, gender, hire_date) 
+ VALUES 
+ (2,'1981-01-11','Edgar','Arcos','M','2021-10-11'),
+ (3,'1911-11-21','Ana','Guadalupe','F','2021-10-11'),
+ (4,'1983-03-13','Hector','Arcos','M','2021-10-11'),
+ (5,'1984-04-14','Paola','Arcos','M','2021-10-11'),
+ (6,'1985-05-15','Juan','Arcos','M','2021-10-11'),
+ (7,'1986-06-16','Jose','Hernandez','M','2021-10-11'),
+ (8,'1987-07-17','Cristian','Hernandez','M','2021-10-11'),
+ (9,'1988-08-18','Adrian','Gonzalez','M','2021-10-11'),
+ (10,'1989-09-19','Daniel','Quintana','M','2021-10-11'),
+ (11,'1910-10-20','Eduardo','Consuegra','M','2021-10-11'),
+ (12,'1982-02-12','Gledys','Arcos','F','2021-10-11'),
+ (13,'1912-12-22','Jorge','McCuak','M','2021-10-11'),
+ (14,'1913-01-23','Jaime','McCuak','M','2021-10-11'),
+ (15,'1914-02-24','Juan','McCuak','M','2021-10-11'),
+ (16,'1980-11-11','Juan','Espino','M','2021-10-12')
+ ;
+
+  -- INSERT MULTIPLE DATA 
+ INSERT INTO
+ employees (emp_no, birth_date, first_name, last_name, gender, hire_date) 
+ VALUES 
+ (2,'1981-01-11','Edgar','Arcos','M','2021-10-11'),
+ (3,'1911-11-21','Ana','Guadalupe','F','2021-10-11'),
+ (4,'1983-03-13','Hector','Arcos','M','2021-10-11'),
+ (5,'1984-04-14','Paola','Arcos','M','2021-10-11'),
+ (6,'1985-05-15','Juan','Arcos','M','2021-10-11'),
+ (7,'1986-06-16','Jose','Hernandez','M','2021-10-11'),
+ (8,'1987-07-17','Cristian','Hernandez','M','2021-10-11'),
+ (9,'1988-08-18','Adrian','Gonzalez','M','2021-10-11'),
+ (10,'1989-09-19','Daniel','Quintana','M','2021-10-11'),
+ (11,'1910-10-20','Eduardo','Consuegra','M','2021-10-11'),
+ (12,'1982-02-12','Gledys','Arcos','F','2021-10-11'),
+ (13,'1912-12-22','Jorge','McCuak','M','2021-10-11'),
+ (14,'1913-01-23','Jaime','McCuak','M','2021-10-11'),
+ (15,'1914-02-24','Juan','McCuak','M','2021-10-11'),
+ (16,'1980-11-11','Juan','Espino','M','2021-10-12')
+ ;
+
+-- INSERT MULTIPLE DATA 
+ INSERT INTO
+ departments (dept_no, dept_name) 
+ VALUES 
+ ('1','backend'),
+ ('2','frontend'),
+ ('3','bbdd'),
+ ('4','administration'),
+ ('5','illustration'),
+ ('6','hr')
+ ;
+
+ -- INSERT MULTIPLE DATA 
+ INSERT INTO
+ dept_emp (emp_no, dept_no, from_date, to_date) 
+ VALUES 
+ (13,2,'2021-10-11','2023-10-11'),
+ (13,5,'2021-10-11','2023-10-11'),
+ (4,2,'2021-10-11','2023-10-11'),
+ (4,5,'2021-10-11','2023-10-11'),
+ (5,2,'2021-10-11','2023-10-11'),
+ (5,5,'2021-10-11','2023-10-11'),
+ (6,2,'2021-10-11','2023-10-11'),
+ (6,5,'2021-10-11','2023-10-11'),
+ (7,2,'2021-10-11','2023-10-11'),
+ (7,5,'2021-10-11','2023-10-11'),
+ (8,2,'2021-10-11','2023-10-11'),
+ (8,1,'2021-10-11','2023-10-11'),
+ (9,3,'2021-10-11','2023-10-11'),
+ (9,1,'2021-10-11','2023-10-11'),
+ (10,3,'2021-10-11','2023-10-11'),
+ (10,1,'2021-10-11','2023-10-11'),
+ (11,3,'2021-10-11','2023-10-11'),
+ (11,1,'2021-10-11','2023-10-11'),
+ (12,3,'2021-10-11','2023-10-11'),
+ (12,1,'2021-10-11','2023-10-11')
+ ;
+
+  -- INSERT MULTIPLE DATA 
+ INSERT INTO
+ dept_manager (emp_no, dept_no, from_date, to_date) 
+ VALUES 
+ (1,1,'2021-10-11','2023-10-11'),
+ (2,2,'2021-10-11','2023-10-11'),
+ (3,5,'2021-10-11','2023-10-11'),
+ (13,3,'2021-10-11','2023-10-11'),
+ (14,4,'2021-10-11','2023-10-11'),
+ (16,6,'2021-10-11','2023-10-11')
+ ;
+
+  -- INSERT MULTIPLE DATA 
+ INSERT INTO
+ titles (emp_no, title, from_date, to_date) 
+ VALUES 
+ (1,'degree','2020-10-11','2029-10-11'),
+ (2,'degree','2020-10-11','2029-10-11'),
+ (3,'degree','2020-10-11','2029-10-11'),
+ (4,'degree','2020-10-11','2029-10-11'),
+ (5,'degree','2020-10-11','2029-10-11'),
+ (6,'degree','2020-10-11','2029-10-11'),
+ (7,'degree','2020-10-11','2029-10-11'),
+ (8,'degree','2020-10-11','2029-10-11'),
+ (9,'degree','2021-10-11','2029-10-11'),
+ (10,'degree','2021-10-11','2028-10-11'),
+ (11,'degree','2021-10-11','2028-10-11'),
+ (12,'degree','2021-10-11','2028-10-11'),
+ (13,'degree','2021-10-11','2028-10-11'),
+ (14,'degree','2021-10-11','2028-10-11'),
+ (15,'degree','2021-10-11','2028-10-11'),
+ (16,'degree','2021-10-11','2028-10-11')
+;
+
+
+--! 1.5.2 UPDATE DATA !--
+
+-- SIMPLE UPDATE MULTIPLE CONDITIONALS
+UPDATE employees 
+SET first_name= 'Fulano' 
+WHERE first_name='Cristian' and last_name='Hernandez' and birth_date='1987-07-17';
+
+-- MULTIPLE UPDATE
+UPDATE departments
+    SET dept_name = (case 
+                         when dept_no = '1' then 'BACK_end'
+                         when dept_no = '2' then 'FRONT_end'
+                         when dept_no = '3' then 'BDD'
+                         when dept_no = '4' then 'ADMIN'
+                         when dept_no = '5' then 'ILLUST'
+                         when dept_no = '6' then 'HR'
+                    end)
+   --?WHERE dept_no in ('1', '2','3','4','5','6');  MAY BE NOT NECESARY
+
+--! 1.5.3 GET DATA !--
+--SELECT + INNER JOIN + CONDITIONAL
+SELECT e.emp_no, first_name, last_name FROM employees as e INNER JOIN  salaries as s 
+ON e.emp_no = s.emp_no WHERE salary > 20000;
+
+--SELECT + INNER JOIN + CONDITIONAL
+SELECT e.emp_no, first_name, last_name FROM employees as e INNER JOIN  salaries as s 
+ON e.emp_no=s.emp_no WHERE salary < 10000;
+
+--SELECT + INNER JOIN + CONDITIONAL (BETWEEN)
+SELECT e.emp_no, first_name, last_name FROM employees as e INNER JOIN  salaries as s 
+ON e.emp_no=s.emp_no WHERE salary BETWEEN 14000 AND 50000;
+
+--SELECT + COUNT 
+SELECT COUNT(emp_no) FROM employees;
+
+--SELECT + COUNT + GROUP BY + HAVING
+SELECT emp_no,COUNT(*) FROM dept_emp GROUP BY emp_no HAVING COUNT(*) > 1;
+
+--SELECT + COUNT + LIKE
+SELECT * FROM titles WHERE from_date LIKE '2019%';
+
+--SELECT + UCASE [CAPITAL LETTERS]
+SELECT UCASE(first_name) FROM employees;
+
+--SELECT + INNER JOIN MULTIPLE + CONDITIONAL
+SELECT e.first_name,e.last_name , d.dept_name FROM employees as e 
+INNER JOIN departments as d INNER JOIN dept_emp as de
+ON  e.emp_no=de.emp_no WHERE  de.dept_no=d.dept_no;
+
+--SELECT + RIGHT JOIN  + GROUP BY
+SELECT e.first_name,e.last_name, COUNT(d.emp_no) 
+FROM dept_manager as d RIGHT JOIN employees as e 
+ON e.emp_no=d.emp_no GROUP BY e.emp_no;
+
+--SELECT + DISTINCT
+ SELECT DISTINCT first_name FROM employees;
+
+ --! 1.5.4 DELETE DATA
+
+--DELETE + IN (SECOND SELECT + INNER JOIN)
+DELETE FROM employees WHERE emp_no IN 
+( SELECT e.emp_no  FROM employees as e 
+INNER JOIN salaries as s 
+ON e.emp_no = s.emp_no WHERE S.salary > 20000);
+
+
+--DELETE + IN (SECOND SELECT + GROUP BY+ COUNT)
+DELETE FROM departments 
+  WHERE dept_no = (
+    SELECT dept_no 
+    FROM dept_emp 
+    WHERE to_date >= CURRENTDATE() 
+    GROUP BY dept_no
+    ORDER BY COUNT(DISTINCT emp_no) DESC
+    LIMIT 1
+  );
+
+