42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
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"""列出两库时间列的完整定义（含 EXTRA），用于生成对齐清单（只读）"""
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import pymysql
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SQL = """
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SELECT TABLE_NAME, COLUMN_NAME, DATA_TYPE, IS_NULLABLE,
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IFNULL(CAST(COLUMN_DEFAULT AS CHAR),'<NULL>'),
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EXTRA, IFNULL(CAST(COLUMN_COMMENT AS CHAR),'')
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FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA=%s AND DATA_TYPE IN ('timestamp','datetime')
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ORDER BY TABLE_NAME, ORDINAL_POSITION
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"""
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def snap(db):
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c = pymysql.connect(host="10.8.0.252", user="root", password="Hbhyg731024@", database=db)
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cur = c.cursor()
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cur.execute(SQL, (db,))
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rows = {(r[0], r[1]): r[2:] for r in cur.fetchall()}
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c.close()
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return rows
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dev, prd = snap("pms_dev"), snap("pms")
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print("== 生产(pms)时间列定义（作为目标）==")
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for k in sorted(prd):
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print(" %-28s %-34s %s" % (f"{k[0]}.{k[1]}", str(prd[k][:3]), prd[k][3]))
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print()
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print("== 仅 dev != prod 的列（扩展对齐候选）==")
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n = 0
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for k in sorted(set(dev) | set(prd)):
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d, p = dev.get(k), prd.get(k)
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if d != p:
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n += 1
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print(" %-28s dev=%s" % (f"{k[0]}.{k[1]}", d))
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print(" %-28s prd=%s" % ("", p))
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print("共", n, "列")
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print()
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print("== 两库相同的 TIMESTAMP 列（不在漂移范围，需单独决策）==")
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for k in sorted(set(dev) & set(prd)):
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if dev[k][0] == "timestamp":
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print(" %-28s %s" % (f"{k[0]}.{k[1]}", dev[k]))
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