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jay817
2025-02-22 19:00:01 +00:00
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commit 56fe41c806
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## sqlite3 [25-02-23]
```py
from tqdm.auto import tqdm, trange; import json
Soup = lambda html: __import__('bs4').BeautifulSoup(html, 'lxml')
for i,c in enumerate('RGYB'):globals()[c]=lambda s,i=i:f'\x1b[{91+i}m{s}\x1b[0m'
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(
(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);")
return type('', (), dict(__call__=lambda _, q, *p: list(con.execute(q, p)),
__setitem__=lambda sql, k, v: sql('INSERT INTO kv(k,v) VALUES(?,?)',
return (sql := type('', (), dict(__call__=lambda _, q, *p: [*con.execute(q, p)],
__setitem__=lambda _, 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__=lambda sql: iter(k[0] for k in sql('SELECT k FROM kv')),
__repr__=lambda _: f"SQL({db}/sql)"))()
__getitem__=lambda _, 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 _, query: sql("SELECT * FROM kv WHERE k LIKE ?", query),
__ne__=lambda _, query: sql("SELECT * FROM kv WHERE k NOT LIKE ?", query),
__delitem__=lambda _, rows: [
sql("DELETE FROM kv WHERE k=? AND v=? AND t=?", *row) for row in rows],
__contains__=lambda _, k: bool(sql("SELECT 1 FROM kv WHERE k=?", k)),
__len__=lambda _: sql("SELECT COUNT(*) FROM kv")[0][0],
__iter__=lambda _: iter(k[0] for k in sql("SELECT k FROM kv"))))())
sql = SQL()
```