README.md

Relational Database Systems Implementation

Contributors:

Siddharth Jain Megha Nagarmunoli

Instructions:

• Make sure you have loaded all the tpch tables into your system
• Set up the Statistics.txt module so that it can give meaningful plans
• To compile the project: make a5.out

For more please visit:

a) Report

b) Video

Execute

--CREATE

CREATE TABLE myTable (n_nationkey INTEGER, n_name STRING, n_regionkey INTEGER, n_comment STRING) AS HEAP;

--INSERT

INSERT '../../../tpch-dbgen/nation.tbl' INTO myTable;

--QUERY

SELECT n.n_nationkey
FROM myTable AS n 
WHERE (n.n_name = 'UNITED STATES');

--DROP

DROP TABLE myTable;

Queries run on nation.tbl from tpch tables -- Query 1

SELECT n.n_nationkey
FROM nation AS n 
WHERE (n.n_name = 'UNITED STATES');

-- Query 2

SELECT n.n_name
FROM nation AS n, region AS r
WHERE (n.n_regionkey = r.r_regionkey) AND (n.n_nationkey > 5);

-- Query 3

SELECT SUM (n.n_nationkey) 
FROM nation AS n, region AS r 
WHERE (n.n_regionkey = r.r_regionkey) AND (n.n_name = 'UNITED STATES');

-- Query 4

SELECT SUM (n.n_regionkey) 
FROM nation AS n, region AS r 
WHERE (n.n_regionkey = r.r_regionkey) AND (n.n_name = 'UNITED STATES') 
GROUP BY n.n_regionkey;

-- Query 5

SELECT SUM DISTINCT (n.n_nationkey + r.r_regionkey)
FROM nation AS n, region AS r, customer AS c 
WHERE (n.n_regionkey = r.r_regionkey) AND (n.n_nationkey = c.c_nationkey) AND (n.n_nationkey > 10)
GROUP BY r.r_regionkey;