import time
sql = [
#-- Remove the unused lock table
"""DROP TABLE lock;""",
#-- Separate anonymous from authenticated sessions.
"""CREATE TEMPORARY TABLE session_old AS SELECT * FROM session;""",
"""DELETE FROM session;""",
"""INSERT INTO session (username,var_name,var_value)
SELECT username,var_name,var_value FROM session_old
WHERE sid IN (SELECT DISTINCT sid FROM session_old
WHERE username!='anonymous' AND var_name='last_visit'
GROUP BY username ORDER BY var_value DESC);""",
"""INSERT INTO session (sid,username,var_name,var_value)
SELECT sid,username,var_name,var_value FROM session_old
WHERE username='anonymous';""",
"""DROP TABLE session_old;"""
]
def do_upgrade(env, ver, cursor):
for s in sql:
cursor.execute(s)
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