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Update grouping logic

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* Check the user's previous row to match the rating key
This commit is contained in:
Jonathan Wong
2015-09-18 14:36:52 -07:00
parent 060c549259
commit 4fa70cb234
1 changed files with 11 additions and 7 deletions
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14
plexpy/__init__.py
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@@ -611,13 +611,17 @@ def dbcheck():
c_db.execute(
'ALTER TABLE session_history ADD COLUMN reference_id INTEGER DEFAULT 0'
)
# Set reference_id to the first row where (rating_key != previous row OR user_id != previous row)
# Set reference_id to the first row where (user_id = previous row, rating_key != previous row) and user_id = user_id
c_db.execute(
'UPDATE session_history ' \
'SET reference_id = (SELECT (CASE WHEN (SELECT MIN(id) FROM session_history WHERE id > ( \
SELECT MAX(id) FROM session_history WHERE (rating_key <> t1.rating_key OR user_id <> t1.user_id) AND id < t1.id)) IS NULL \
THEN (SELECT MIN(id) FROM session_history) ELSE (SELECT MIN(id) FROM session_history WHERE id > ( \
SELECT MAX(id) FROM session_history WHERE (rating_key <> t1.rating_key OR user_id <> t1.user_id) AND id < t1.id)) END) ' \
'SET reference_id = (SELECT (CASE \
WHEN (SELECT MIN(id) FROM session_history WHERE id > ( \
SELECT MAX(id) FROM session_history \
WHERE (user_id = t1.user_id AND rating_key <> t1.rating_key AND id < t1.id)) AND user_id = t1.user_id) IS NULL \
THEN (SELECT MIN(id) FROM session_history WHERE (user_id = t1.user_id)) \
ELSE (SELECT MIN(id) FROM session_history WHERE id > ( \
SELECT MAX(id) FROM session_history \
WHERE (user_id = t1.user_id AND rating_key <> t1.rating_key AND id < t1.id)) AND user_id = t1.user_id) END) ' \
'FROM session_history AS t1 ' \
'WHERE t1.id = session_history.id) '
)