# -*- coding: utf-8 -*-
"""票 06 实验判别：crm-app.log 中实验商机 id 附近的 UPDATE SQL。"""
import io, sys
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')

txt = open(r'e:/code/crm-backend-matt/logs/crm-app.log', encoding='utf-8', errors='replace').read()
oid = '749196675649634304'
print('total len =', len(txt))

# 找该 id 出现的上下文（UPDATE 语句）
import re
idxs = [m.start() for m in re.finditer(oid, txt)]
print('occurrences =', len(idxs))
shown = 0
for i in idxs:
    seg = txt[max(0, i - 400):i + 300]
    if 'UPDATE' in seg.upper():
        print('=' * 80)
        print(seg)
        shown += 1
        if shown >= 3:
            break
if shown == 0:
    print('--- no UPDATE context found; last 3 occurrence contexts ---')
    for i in idxs[-3:]:
        print('=' * 80)
        print(txt[max(0, i - 400):i + 300])