SQL Lab, PostgreSQL

SQL Lab

--PostgreSQL 9.6
--'\\' is a delimiter

drop table if exists highschooler;
drop table if exists friend;
drop table if exists likes;

create table highschooler("id" int, "name" varchar(30), "grade" int);
create table friend("id1" int, "id2" int);
create table likes("id1" int, "id2" int);

insert into highschooler("id","name","grade") 
values 
(1510, 'Jordan', 9),
(1689, 'Gabriel', 9),
(1381, 'Tiffany', 9),
(1709, 'Cassandra', 9),
(1101, 'Haley', 10),
(1782, 'Andrew', 10),
(1468, 'Kris', 10),
(1641, 'Brittany', 10),
(1247, 'Alexis', 11),
(1316, 'Austin', 11),
(1911, 'Gabriel', 11),
(1501, 'Jessica', 11),
(1304, 'Jordan', 12),
(1025, 'John', 12),
(1934, 'Kyle', 12),
(1661, 'Logan', 12);

insert into friend("id1","id2") 
values 
(1510, 1381),
(1510, 1689),
(1689, 1709),
(1381, 1247),
(1709, 1247),
(1689, 1782),
(1782, 1468),
(1782, 1316),
(1782, 1304),
(1468, 1101),
(1468, 1641),
(1101, 1641),
(1247, 1911),
(1247, 1501),
(1911, 1501),
(1501, 1934),
(1316, 1934),
(1934, 1304),
(1304, 1661),
(1661, 1025),
(1689, 1709),
(1709, 1689),
(1782, 1709),
(1911, 1247),
(1247, 1468),
(1641, 1468),
(1316, 1304),
(1501, 1934),
(1934, 1501),
(1025, 1101);

insert into likes("id1","id2")
values 
(1689, 1709),
(1709, 1689),
(1782, 1709),
(1911, 1247),
(1247, 1468),
(1641, 1468),
(1316, 1304),
(1501, 1934),
(1934, 1501),
(1025, 1101);

drop table if exists movie;
drop table if exists reviewer;
drop table if exists rating;

create table movie("mid" int, "title" text, "year" int, "director" text);
create table reviewer("rid" int, "name" text);
create table rating1("rid" int, "mid" int, "stars" int, "ratingdate" date);

insert into movie("mid","title","year","director") 
values
(101, 'Gone with the Wind', 1939, 'Victor Fleming'),
(102, 'Star Wars', 1977, 'George Lucas'),
(103, 'The Sound of Music', 1965, 'Robert Wise'),
(104, 'E.T.', 1982, 'Steven Spielberg'),
(105, 'Titanic', 1997, 'James Cameron'),
(106, 'Snow White', 1937, null),
(107, 'Avatar', 2009, 'James Cameron'),
(108, 'Raiders of the Lost Ark', 1981, 'Steven Spielberg');

insert into reviewer("rid","name") 
values
(201, 'Sarah Martinez'),
(202, 'Daniel Lewis'),
(203, 'Brittany Harris'),
(204, 'Mike Anderson'),
(205, 'Chris Jackson'),
(206, 'Elizabeth Thomas'),
(207, 'James Cameron'),
(208, 'Ashley White');

insert into rating1("rid", "mid", "stars", "ratingdate")
values
(201, 101, 2, '2011-01-22'),
(201, 101, 4, '2011-01-27'),
(202, 106, 4, null),
(203, 103, 2, '2011-01-20'),
(203, 108, 4, '2011-01-12'),
(203, 108, 2, '2011-01-30'),
(204, 101, 3, '2011-01-09'),
(205, 103, 3, '2011-01-27'),
(205, 104, 2, '2011-01-22'),
(205, 108, 4, null),
(206, 107, 3, '2011-01-15'),
(206, 106, 5, '2011-01-19'),
(207, 107, 5, '2011-01-20'),
(208, 104, 3, '2011-01-02');


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