"""列出两库全部时间列的类型，并做差异比对（只读）"""
import pymysql

SQL = """
SELECT TABLE_NAME, COLUMN_NAME, DATA_TYPE, IS_NULLABLE,
       IFNULL(CAST(COLUMN_DEFAULT AS CHAR),'<NULL>')
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA=%s AND DATA_TYPE IN ('timestamp','datetime')
ORDER BY TABLE_NAME, ORDINAL_POSITION
"""


def snap(db):
    c = pymysql.connect(host="10.8.0.252", user="root", password="Hbhyg731024@", database=db)
    cur = c.cursor()
    cur.execute(SQL, (db,))
    rows = {(r[0], r[1]): (r[2], r[3], r[4]) for r in cur.fetchall()}
    c.close()
    return rows


dev, prd = snap("pms_dev"), snap("pms")
keys = sorted(set(dev) | set(prd))
print("%-30s %-20s %-34s %-34s %s" % ("table.column", "", "pms_dev", "pms", "一致"))
diff = 0
for k in keys:
    d, p = dev.get(k, ("<missing>",) * 3), prd.get(k, ("<missing>",) * 3)
    same = d == p
    if not same:
        diff += 1
    print("%-30s %-20s %-34s %-34s %s" % (f"{k[0]}.{k[1]}", "", str(d), str(p), "OK" if same else "*** DIFF ***"))
print()
print("时间列总数:", len(keys), " 不一致:", diff)
print()
print("pms_dev 中仍是 TIMESTAMP 的列:")
for k in keys:
    if dev.get(k, ("",))[0] == "timestamp":
        print("   ", f"{k[0]}.{k[1]}", dev[k])
print("pms(生产) 中仍是 TIMESTAMP 的列:")
for k in keys:
    if prd.get(k, ("",))[0] == "timestamp":
        print("   ", f"{k[0]}.{k[1]}", prd[k])