58602991b3
git-subtree-dir: My-Data-Engineering-Portifolio git-subtree-mainline:d606a91bd5git-subtree-split:af9dfac5db
42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
class SqlQueries:
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songplay_table_insert = ("""
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SELECT
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md5(events.sessionid || events.start_time) songplay_id,
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events.start_time,
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events.userid,
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events.level,
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songs.song_id,
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songs.artist_id,
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events.sessionid,
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events.location,
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events.useragent
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FROM (SELECT TIMESTAMP 'epoch' + ts/1000 * interval '1 second' AS start_time, *
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FROM staging_events
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WHERE page='NextSong') events
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LEFT JOIN staging_songs songs
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ON events.song = songs.title
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AND events.artist = songs.artist_name
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AND events.length = songs.duration
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""")
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user_table_insert = ("""
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SELECT distinct userid, firstname, lastname, gender, level
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FROM staging_events
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WHERE page='NextSong'
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""")
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song_table_insert = ("""
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SELECT distinct song_id, title, artist_id, year, duration
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FROM staging_songs
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""")
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artist_table_insert = ("""
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SELECT distinct artist_id, artist_name, artist_location, artist_latitude, artist_longitude
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FROM staging_songs
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""")
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time_table_insert = ("""
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SELECT start_time, extract(hour from start_time), extract(day from start_time), extract(week from start_time),
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extract(month from start_time), extract(year from start_time), extract(dayofweek from start_time)
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FROM songplays
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""") |