feat(Core/UI): 백테스트 전역 엔진 선택 버튼 추가 및 스캘핑 Rust 방어로직 포팅 1차 완료

scratch/check_chetime.py

@@ -0,0 +1,55 @@
+"""
+ls_ws_ticks.chetime 실제 값 샘플 확인
+→ REGEXP_REPLACE 없이 처리 가능한지 패턴 파악
+"""
+import sys, os
+sys.path.insert(0, '/home/hoon/kis_bot')
+os.chdir('/home/hoon/kis_bot')
+
+from database import TradeDB
+db = TradeDB()
+
+try:
+    # chetime 샘플 (다양한 패턴 확인)
+    rows = db.conn.execute(
+        "SELECT chetime, ts FROM ls_ws_ticks "
+        "WHERE ts >= '2026-09-02 09:00:00' AND ts <= '2026-09-02 15:40:00' "
+        "ORDER BY ts LIMIT 20"
+    ).fetchall()
+    print("=== chetime 샘플 ===")
+    for r in rows:
+        d = dict(r)
+        print(f"  chetime={repr(d['chetime'])!r:30s}  ts={d['ts']}")
+
+    # chetime NULL 비율
+    r = db.conn.execute(
+        "SELECT "
+        "  COUNT(*) AS total, "
+        "  SUM(CASE WHEN chetime IS NULL OR chetime='' THEN 1 ELSE 0 END) AS null_cnt, "
+        "  SUM(CASE WHEN CHAR_LENGTH(chetime) >= 6 THEN 1 ELSE 0 END) AS has6, "
+        "  SUM(CASE WHEN CHAR_LENGTH(chetime) >= 14 THEN 1 ELSE 0 END) AS has14, "
+        "  SUM(CASE WHEN chetime REGEXP '[^0-9]' THEN 1 ELSE 0 END) AS has_nonnumeric "
+        "FROM ls_ws_ticks "
+        "WHERE ts >= '2026-09-02 09:00:00' AND ts <= '2026-09-02 15:40:00'"
+    ).fetchone()
+    d = dict(r)
+    print(f"\n=== chetime 통계 (당일) ===")
+    print(f"  총행: {d['total']}")
+    print(f"  NULL/빈값: {d['null_cnt']}")
+    print(f"  6자리 이상: {d['has6']}")
+    print(f"  14자리 이상: {d['has14']}")
+    print(f"  비숫자 포함: {d['has_nonnumeric']}")
+
+    # 비숫자 포함 샘플
+    if d['has_nonnumeric']:
+        rows2 = db.conn.execute(
+            "SELECT chetime FROM ls_ws_ticks "
+            "WHERE ts >= '2026-09-02 09:00:00' AND ts <= '2026-09-02 15:40:00' "
+            "AND chetime REGEXP '[^0-9]' LIMIT 5"
+        ).fetchall()
+        print(f"\n  비숫자 포함 샘플:")
+        for r in rows2:
+            print(f"    {repr(dict(r)['chetime'])}")
+
+finally:
+    db.close()