Improve installation instructions

README.md

@@ -8,45 +8,49 @@ These instructions will get you a copy of the project up and running on your loc
 
 ### Prerequisites
 
-Before starting the setup, make sure Python 3 and PostgreSQL is installed on your system.
+- Python 3
+  - `pip`
+- PostgreSQL
+
+#### On Debian/Ubunu
+``` shell
+sudo apt-get install python3-pip
+sudo apt-get install postgresql
+sudo apt-get install python-psycopg2
+sudo apt-get install libpq-dev
+pip install --user virtualenv
+```
 
 <!---  installation steps {{{ --> 
 
 ### Installing
 
-1. Use the pip tool to install `virtualenv`. See this [guide](http://docs.python-guide.org/en/latest/dev/virtualenvs/) for further details.
-
-```
-pip install --user pipenv
+1. Create a virtual environment.
+    ``` shell
+    virtualenv /path/to/new/virtual/environment
     ```
-2. Create a virtual environment.
 
-```
-python3 -m venv /path/to/new/virtual/environment
-```
-3. `cd` into the directory you just created a virtual environment in, 
+1. `cd` into the directory you just created a virtual environment in, 
 and clone the GitHub repo:
-
-```
+    ``` shell
     cd /path/to/new/virtual/environment
     git clone https://github.com/Kevin-Mok/spotify-lib-vis
     ```
-4. Activate the virtual environment from the command line.
 
-```
+1. Activate the virtual environment from the command line.
+    ``` shell
     # activate.fish if you're using fish shell
     source bin/activate
     ```
-5. `cd` into the repository root directory and install all 
-dependencies using `pip`.
 
-```
+1. `cd` into the repository root directory and install all dependencies using `pip`.
+    ``` shell
     cd spotify-lib-vis
-pip install -r requirements.txt
+    pip3 install -r requirements.txt
     ```
-6. Run `reset_db.sh` to create the database and start the server.
 
-```
+1. Run `reset_db.sh` to create the database and start the server.
+    ``` shell
     ./scripts/reset_db.sh
     ```
 

scripts/queries/most-played.sql

@@ -1,5 +1,6 @@
 --  select t.name as track, a.name as artist
-select substring(t.name for 50) as track, a.name as artist, count(t.id)
+select distinct on (1)
+timestamp, substring(t.name for 50) as track, a.name as artist
 from api_history as h
 join api_track as t
 on h.track_id = t.id
@@ -7,6 +8,6 @@ join api_track_artists ta
 on ta.track_id = t.id
 join api_artist a
 on a.id = ta.artist_id
-group by t.id, a.id
-order by count(t.id) desc;
---  limit 10;
+order by timestamp desc
+--  ;
+limit 20;