导读:
with t as (select level as n from dual connect by level <=9) select sys_connect_by_path(b.n || '*' || a.n || '=' || a.n * b.n, ' ') as 九九乘法表 from t a, t b where a.n >= b.n and level = a.n start with b.n=1 connect by a.n=prior a.n and b.n=prior b.n+1;