摘要:
在 mysql进行 多表联合查询, 出现以下错误:[Err] 1055 - Expression #1 of SELECT list is not in GROUP BY clausewhich is not functionally dependent on columns in GROUP BY 阅读全文
摘要:
a = "1" b_name = "小牛牛" # 用 %s 代替一个参数 s 是字符串str的意思. print("my name is %s" %b_name) print("my name is %s and my age is %s years old." % (b_name, a)) # m 阅读全文