select * from ( select max(t1.source) as source ,t1.c1 ,t1.c2 ,t1.c3 ,count(*) as cnt from ( as source, t11.* from dev.astron_wangluochayi_1 t11 union all as source, t12.* from dev.astron_wangluochayi_1 t12 ) t1 group by t1.source,t1.c1,t1.c2 ,t1.c3
Choose the best route Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7062 Accepted Submission(s): 2301 Problem Description One day , Kiki wants to visit one of her friends. As she is liable
update更新两个字段时的sql语句: update tj_record set is_recycle_reprint_guide='1' , recycle__guide_date=now() where id = #{record_id} 科室假设我将字段的"."写成了and也不报错.可是更新不了. 如图: 切记,更新多个字段时是以逗号分隔.
# coding=utf-8 #共轭梯度算法求最小值 import numpy as np from scipy import optimize def f(x, *args): u, v = x a, b, c, d, e, f,g,h = args return a*u**g+ b*u*v + c*v**h + d*u + e*v + f def gradf(x, *args): u, v = x a, b, c, d, e, f,g,h = args gu = g*a*u + b*v +