Add files via upload

Author: irisb1701

LogsProject.py

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+#!/usr/bin/python3
+
+import psycopg2
+
+DBNAME = "news"
+
+
+def popular_articles():
+    query = """
+SELECT title, x
+FROM articles4, shortened2
+WHERE articles4.concat = shortened2.path
+ORDER BY x DESC;
+"""
+    db = psycopg2.connect(database=DBNAME)
+    c = db.cursor()
+    c.execute(query)
+    results = c.fetchall()
+    for r in results:
+        print r[0], "--", r[1], "views"       
+    print ""
+    db.close()
+
+
+def popular_authors():
+    query = """
+SELECT name, sum(number_of_views)
+AS number_of_views
+FROM z, y
+WHERE z.concat = y.path
+GROUP BY name
+ORDER BY number_of_views desc;
+"""
+    db = psycopg2.connect(database=DBNAME)
+    c = db.cursor()
+    c.execute(query)
+    results = c.fetchall()
+    for r in results:
+        print r[0], "--", r[1], "views"
+    print ""
+    db.close()
+
+
+def errors():
+    query = """SELECT date,
+CONCAT(round(percentage::decimal, 2),'%')
+FROM divide
+WHERE percentage > 1;"""
+    db = psycopg2.connect(database=DBNAME)
+    c = db.cursor()
+    c.execute(query)
+    results = c.fetchall()
+    for r in results:
+        print r[0], "--", r[1], "views"
+    db.close()
+
+
+popular_articles()
+popular_authors()
+errors()

LogsProjectOutput.txt

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+
+Candidate is jerk, alleges rival -- 338647 views
+Bears love berries, alleges bear -- 253801 views
+Bad things gone, say good people -- 170098 views
+
+Ursula La Multa -- 507594 views
+Rudolf von Treppenwitz -- 423457 views
+Anonymous Contributor -- 170098 views
+Markoff Chaney -- 84557 views
+
+2016-07-17 -- 2.32% error

README.MD

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+#Requirements
+-User must have virtual environment running
+
+-In order to run, user needs
+
+	-Vagrant
+	-Virtual Box
+Get Vagrant file here: `https://github.com/udacity/fullstack-nanodegree-vm/blob/master/vagrant/Vagrantfile`
+Download database here: `https://d17h27t6h515a5.cloudfront.net/topher/2016/August/57b5f748_newsdata/newsdata.zip`
+
+Place logsproject.py and newsdata.sql in vagrant directory 
+ 
+If psycopg2 is not already installed, use command `pip install psycopg2`
+
+#How to run
+in terminal make vagrant current directory and run
+
+	`vagrant up` and `vagrant ssh`
+
+use following command to open database:
+	`psql news`
+
+enter the following queries to create required views:
+
+`
+CREATE VIEW shortened2 AS 
+SELECT path, 
+COUNT(id) AS x 
+FROM log 
+GROUP BY path 
+ORDER BY x DESC
+LIMIT 3 OFFSET 1;
+`
+`
+CREATE VIEW articles4 AS 
+SELECT *, 
+CONCAT('/article/', slug) 
+FROM articles;
+`
+`
+CREATE VIEW z AS 
+SELECT concat, title, name 
+FROM articles4, authors 
+WHERE articles4.author = authors.id;
+`
+`
+CREATE VIEW y AS 
+SELECT path, count(path) AS number_of_views 
+FROM log 
+GROUP BY path 
+ORDER BY number_of_views desc;
+`
+`
+CREATE VIEW ok AS 
+SELECT time::date AS date, 
+COUNT(status) AS no_error 
+FROM log 
+WHERE status = '200 OK' 
+GROUP BY date; 
+`     
+`
+CREATE VIEW error AS 
+SELECT time::date AS date, 
+COUNT(status) AS error 
+FROM log 
+WHERE status = '404 NOT FOUND' 
+GROUP BY date;
+`
+`
+CREATE VIEW together AS 
+SELECT ok.date, error, no_error 
+FROM ok, error 
+WHERE ok.date = error.date;
+`
+`
+CREATE VIEW divide AS 
+SELECT date, 100*(error::decimal / no_error) AS percentage 
+FROM together; 
+`
+
+exit psql and run command: 
+	`python logsproject.py`