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jay817
2025-02-22 10:43:43 +00:00
parent 92d228ed63
commit cc968b637d
1 changed files with 13 additions and 11 deletions
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@@ -6,23 +6,25 @@ __import__('concurrent').futures.ThreadPoolExecutor().submit(
## sqlite3 [25-02-22]
```py
def SQL():
import sqlite3, os; (not os.path.exists('.db') and os.makedirs('.db') is None,
con := sqlite3.connect('.db/sql', isolation_level=None))[0] and con.executescript(
def SQL(db='.db'):
import sqlite3, os, json; (not os.path.exists(db) and os.makedirs(db) is None,
(con := sqlite3.connect(f'{db}/sql', isolation_level=None)).execute(
"PRAGMA busy_timeout="f"{1e9}"))[0] and con.executescript(
"PRAGMA journal_mode=WAL; CREATE TABLE kv(k,v,t DEFAULT CURRENT_TIMESTAMP);"
"CREATE INDEX idx_kv_v ON kv(v); CREATE INDEX idx_kv_k_t ON kv(k,t DESC);")
con.execute(f'PRAGMA busy_timeout={1e9}'); return type('', (), dict(
__call__=lambda _, q, *p: list(con.execute(q, p)),
__setitem__=lambda sql, k, v: sql('INSERT INTO kv(k,v) VALUES(?,?)', k, v),
__getitem__=lambda sql, k: v[0][0] if (v :=
sql('SELECT v FROM kv WHERE k=? ORDER BY t DESC LIMIT 1', k)) else None,
__contains__=lambda sql, k: bool(sql('SELECT 1 FROM kv WHRE k=?', k)),
__len__=lambda sql: sql('SELECT COUNT(*) FROM kv')[0][0],
return type('', (), dict(__call__=lambda _, q, *p: list(con.execute(q, p)),
__setitem__=lambda sql, k, v: sql('INSERT INTO kv(k,v) VALUES(?,?)',
k, v if type(v) is bytes else json.dumps(v)),
__getitem__=lambda sql, k: (json.loads(v) if type(v := v[0][0]) is str else v) if
(v := sql('SELECT v FROM kv WHERE k=? ORDER BY t DESC LIMIT 1', k)) else None,
__eq__=lambda sql, query: sql('SELECT * FROM kv WHERE k LIKE ?', query),
__ne__=lambda sql, query: sql('SELECT * FROM kv WHERE k NOT LIKE ?', query),
__delitem__=lambda sql, rows: [
sql('DELETE FROM kv WHERE k=? AND v=? AND t=?', *row) for row in rows],
))()
__contains__=lambda sql, k: bool(sql('SELECT 1 FROM kv WHERE k=?', k)),
__len__=lambda sql: sql('SELECT COUNT(*) FROM kv')[0][0],
__iter__=iter(k[0] for k in sql('SELECT k FROM kv')),
__repr__=lambda _: f"SQL({db}/sql)"))()
sql = SQL()
```