54 lines
2.0 KiB
Python
54 lines
2.0 KiB
Python
import sys
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import time
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from database import TradeDB
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db = TradeDB()
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try:
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# TradeDB in database.py inherits or delegates to _MariaDBConn, which has .execute(sql)
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tables = [list(r.values())[0] for r in db.execute("SHOW TABLES").fetchall()]
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target_prefixes = (
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'ws_ticks', 'ws_orderbook', 'ws_candles',
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'ls_ws_ticks', 'ls_ws_orderbook', 'ls_ws_candles',
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'ws_price_validation'
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)
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for table in tables:
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if not table.startswith(target_prefixes):
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continue
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cols = [dict(r)["Field"] for r in db.execute(f"SHOW COLUMNS FROM {table}").fetchall()]
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time_col = None
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for candidate in ('tick_time', 'ob_time', 'candle_time', 'timestamp', 'recv_ts', 'datetime'):
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if candidate in cols:
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time_col = candidate
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break
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if time_col:
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cutoff = '20260808'
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# Print count before deletion
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count_q = f"SELECT COUNT(*) as cnt FROM {table} WHERE {time_col} < %s"
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count = db.execute(count_q, (cutoff,)).fetchone()['cnt']
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if count > 0:
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print(f"Deleting {count} rows from {table} (using column {time_col})")
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deleted = 0
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while True:
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del_q = f"DELETE FROM {table} WHERE {time_col} < %s LIMIT 100000"
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cur = db.execute(del_q, (cutoff,))
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rows_affected = cur.rowcount
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if rows_affected <= 0:
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break
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deleted += rows_affected
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print(f" ... deleted {deleted}/{count} rows in {table}")
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time.sleep(0.1)
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print(f"Finished deleting from {table}.")
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else:
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print(f"No rows to delete in {table} before {cutoff}")
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else:
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print(f"Warning: No time column found for {table}, columns: {cols}")
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finally:
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db.close()
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