Add Time, Users and songplays tables'create statements & song_select

Author: omarfessi

sql_queries.py

@@ -22,14 +22,72 @@
 							location varchar NOT NULL,
 							latitude float,
 							longitude float)"""
+
+time_table_create="""
+CREATE TABLE IF NOT EXISTS time(
+								start_time timestamp PRIMARY KEY,
+								hour int,
+								day int ,
+								week int,
+								month int,
+								year int,
+								dayofweek int)"""
+
+user_table_create="""
+CREATE TABLE IF NOT EXISTS users(
+								userId int PRIMARY KEY,
+								firstName varchar,
+								lastName varchar,
+								gender varchar, 
+								level varchar NOT NULL)"""
+
+
+songplay_table_create = (""" CREATE TABLE IF NOT EXISTS songplays (
+songplay_id serial PRIMARY KEY, 
+start_time timestamp REFERENCES time (start_time ) ,
+userId int REFERENCES users ( userId ) ,
+song_id varchar REFERENCES songs (song_id),
+artist_id varchar REFERENCES artists (artist_id),
+level varchar NOT NULL,
+session_id int NOT NULL,
+location varchar NOT NULL ,
+user_agent varchar NOT NULL)
+""")
+
+
 # insert data
 song_table_insert="""
-INSERT INTO songs (song_id, title, artist_id, year, duration) VALUES (%s, %s, %s, %s, %s)
+INSERT INTO songs (song_id, title, artist_id, year, duration) 
+VALUES (%s, %s, %s, %s, %s)
 ON CONFLICT (song_id) DO NOTHING"""
 
 artist_table_insert="""
-INSERT INTO artists (artist_id, name, location, latitude, longitude) VALUES (%s, %s, %s, %s, %s)
+INSERT INTO artists (artist_id, name, location, latitude, longitude) 
+VALUES (%s, %s, %s, %s, %s)
 ON CONFLICT (artist_id) DO NOTHING """
 
+
+time_table_insert="""
+INSERT INTO time (start_time, hour, day, week, month, year, dayofweek) 
+VALUES (%s, %s, %s, %s, %s, %s, %s)
+ON CONFLICT (start_time) DO NOTHING """
+
+user_table_insert="""
+INSERT INTO users (userId, firstName, lastName, gender, level) 
+VALUES ( %s, %s, %s, %s, %s)
+ON CONFLICT (userId) DO NOTHING """
+
+songplay_table_insert="""
+INSERT INTO songplays ( start_time, userId, song_id, artist_id,level,  session_id, location, user_agent) 
+VALUES ( %s, %s, %s, %s,%s, %s, %s, %s)
+"""
+
+
+song_select="""
+SELECT songs.song_id, artists.artist_id FROM songs JOIN artists 
+ON songs.artist_id=artists.artist_id 
+WHERE songs.title=%s AND artists.name=%s AND songs.duration=%s """
+
+
 drop_table_queries=[songplay_table_drop, user_table_drop, song_table_drop, artist_table_drop, time_table_drop]
-create_table_queries=[song_table_create, artist_table_create]
+create_table_queries=[song_table_create, artist_table_create, time_table_create, user_table_create, songplay_table_create]