bbj/dbupdate.py

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Python
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import sqlite3
with sqlite3.connect("data.sqlite") as _con:
_con.execute('ALTER TABLE threads ADD COLUMN last_author text DEFAULT ""')
_con.commit()
for tid in _con.execute("SELECT thread_id FROM threads"):
author = _con.execute("SELECT author FROM messages WHERE thread_id = ? ORDER BY post_id", tid).fetchall()[-1]
_con.execute("UPDATE threads SET last_author = ? WHERE thread_id = ?", author + tid)
_con.commit()