SQL code select char(cast(rand()*25 as int)+97)+char(cast(rand()*25 as int)+97) select 两位随机字母 = (select top 1 id from (select 'A' as id union select 'B' union select 'C' union select 'D' union select 'E' union select 'Z') m order by newid
def demo(m, n): if m > n: m, n = n, m p = m * n while m != 0: r = n % m n = m m = r return (int(p / n), n) val = demo(20, 30) print('最小公倍数为:', val[0]) print('最大公因数为:', val[1]) #输出结果 #最小公倍数为: 60 #最大公因数为: 10
set @i = -1; set @sql = repeat(" select 1 union all",-datediff('2021-01-01','2030-12-31')+1); set @sql = left(@sql,length(@sql)-length(" union all")); set @sql = concat("select date_add('2021-01-01',interval @i:=@i+1 day) as date
