使用pymysql时报错1292 "Incorrect date value: '1983' for column 'crawl_date' at row 1"

其原因时在where后面限定日期时，日期外应加单引号，
错误写法：
“select game_SteamID from steam_dailyTopGame where crawl_date=%s” % str(today)
正确写法：
“select game_SteamID from steam_dailyTopGame where crawl_date=’{}’”.format(str(today))

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