-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsql_queries.py
189 lines (154 loc) · 7.62 KB
/
sql_queries.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
import configparser
# CONFIG
config = configparser.ConfigParser()
config.read('dwh.cfg')
ARN = config.get("IAM_ROLE", "ARN")
# DROP TABLES
staging_events_table_drop = "DROP table IF EXISTS staging_events"
staging_songs_table_drop = "DROP table IF EXISTS staging_songs"
songplay_table_drop = "DROP table IF EXISTS songplays"
user_table_drop = "DROP table IF EXISTS users"
song_table_drop = "DROP table IF EXISTS songs"
artist_table_drop = "DROP table IF EXISTS artists"
time_table_drop = "DROP table IF EXISTS time"
# CREATE TABLES
staging_events_table_create= ("""CREATE TABLE IF NOT EXISTS staging_events(\
artist varchar,
auth varchar,
firstName varchar,
gender varchar,
itemInSession int,
lastName varchar,
length float,
level varchar,
location varchar,
method varchar,
page varchar,
registration float,
sessionId int,
song varchar,
status int,
ts bigint,
userAgent varchar,
userId int
)
""")
staging_songs_table_create = ("""CREATE TABLE IF NOT EXISTS staging_songs(\
num_songs int,
artist_id varchar,
artist_latitude float,
artist_longitude float,
artist_location varchar,
artist_name varchar,
song_id varchar,
title varchar,
duration float,
year int
)
""")
songplay_table_create = ("""CREATE TABLE IF NOT EXISTS songplays(\
songplay_id int IDENTITY(0,1) PRIMARY KEY, \
start_time timestamp NOT NULL, \
user_id int NOT NULL,\
level varchar,\
song_id varchar,\
artist_id varchar,\
session_id int,\
location varchar,\
user_agent varchar);
""")
user_table_create = ("""CREATE TABLE IF NOT EXISTS users(\
user_id int PRIMARY KEY,\
first_name varchar,\
last_name varchar,\
gender varchar,\
level varchar);
""")
song_table_create = ("""CREATE TABLE IF NOT EXISTS songs(\
song_id varchar PRIMARY KEY,\
title varchar,\
artist_id varchar NOT NULL,\
year int,\
duration float);
""")
artist_table_create = ("""CREATE TABLE IF NOT EXISTS artists(\
artist_id varchar PRIMARY KEY,\
name varchar,\
location varchar,\
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,\
weekday int);
""")
# STAGING TABLES
staging_events_copy = ("""
copy staging_events from 's3://udacity-dend/log_data/'
credentials 'aws_iam_role={}'
format json as 's3://udacity-dend/log_json_path.json'
region 'us-west-2'
dateformat 'auto';
""").format(ARN)
staging_songs_copy = ("""
copy staging_songs from 's3://udacity-dend/song_data/{}'
credentials 'aws_iam_role={}'
format as json 'auto'
region 'us-west-2';
""").format('',ARN)
# FINAL TABLES
songplay_table_insert = ("""INSERT INTO songplays(start_time, user_id,level, song_id, artist_id, session_id, location, user_agent)\
SELECT DISTINCT timestamp 'epoch' + CAST(e.ts AS BIGINT)/1000 * interval '1 second' ,\
e.userId, e.level, s.song_id, s.artist_id, e.sessionId, e.location, e.userAgent \
FROM staging_events e \
INNER JOIN staging_songs s \
ON e.song = s.title AND \
e.artist = s.artist_name AND \
e.length = s.duration \
WHERE e.page = 'NextSong' \
AND userID IS NOT NULL;
""")
user_table_insert = ("""INSERT INTO users(user_id, first_name, last_name, gender, level)\
SELECT DISTINCT userId, firstName, lastName, gender, level \
FROM staging_events \
WHERE page = 'NextSong'\
AND userID IS NOT NULL;
""")
song_table_insert = ("""INSERT INTO songs(song_id, title, artist_id, year, duration)\
SELECT DISTINCT song_id, title, artist_id, year, duration \
FROM staging_songs;
""")
artist_table_insert = ("""INSERT INTO artists(artist_id, name, location, latitude, longitude)\
SELECT DISTINCT artist_id, artist_name, artist_location, artist_latitude, artist_longitude \
FROM staging_songs;
""")
time_table_insert = ("""INSERT INTO time(start_time, hour, day, week, month, year, weekday)\
SELECT DISTINCT timestamp 'epoch' + CAST(ts AS BIGINT)/1000 * interval '1 second' AS ts_ts, \
EXTRACT(HOUR FROM ts_ts), \
EXTRACT(DAY FROM ts_ts), \
EXTRACT(WEEK FROM ts_ts),\
EXTRACT(MONTH FROM ts_ts),\
EXTRACT(YEAR FROM ts_ts), \
EXTRACT(WEEKDAY FROM ts_ts) \
FROM staging_events \
WHERE page = 'NextSong';
""")
sql_count_songplays = "SELECT COUNT(*) FROM songplays;"
sql_count_songs = "SELECT COUNT(*) FROM songs"
sql_count_artists = "SELECT COUNT(*) FROM artists;"
sql_count_time = "SELECT COUNT(*) FROM time;"
sql_count_users = "SELECT COUNT(*) FROM users;"
sql_count_staging_events = "SELECT COUNT(*) FROM staging_events;"
sql_count_staging_songs = "SELECT COUNT(*) FROM staging_songs;"
#SOURCE / HELP : for timestamp conversion, https://stackoverflow.com/questions/39815425/how-to-convert-epoch-to-datetime-redshift + discussions in udacity forum
# QUERY LISTS
create_table_queries = [staging_events_table_create, staging_songs_table_create, songplay_table_create, user_table_create, song_table_create, artist_table_create, time_table_create]
drop_table_queries = [staging_events_table_drop, staging_songs_table_drop, songplay_table_drop, user_table_drop, song_table_drop, artist_table_drop, time_table_drop]
copy_table_queries = [staging_events_copy, staging_songs_copy]
insert_table_queries = [songplay_table_insert, user_table_insert, song_table_insert, artist_table_insert, time_table_insert]
sql_counts = [sql_count_songplays, sql_count_songs, sql_count_artists, sql_count_time, sql_count_users, sql_count_staging_events, sql_count_staging_songs]