Write relational algebra expressions for database provided
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
Write relational algebra expressions for
Transcribed Image Text:CREATE DATABASE NAME TPCH and then create 8
Created tables are
mysql> use tpch;
Database changed
mysql> SHOW TABLES;
Tables_in_tpch |
customer
lineitem
nation
orders
part
partsupp
region
supplier
Transcribed Image Text:SQL query
mysql> SELECT
-> COUNT(*),
-> sum(1_quantity) as Sum_quantity,
-> sum(1_extendedprice) as sum_extendedprice
-> FROM lineitem
-> ORDER BY
-> 1_returnflag;
Output
COUNT(*) | Sum_quantity | sum_extendedprice
6005 |
152398.00 |
152774398.38 |
||C|
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