1.行转列 （1）decode实现 SELECT t_year, MAX(DECODE(t_month,'1月',t_value)) AS 一月, MAX(DECODE(t_month,'2月',t_value)) AS 二月, MAX(DECODE(t_month,'3月',t_value)) AS 三月, MAX(DECODE(t_month,'4月',t_value)) AS...
1.行转列 （1）decode实现 SELECT t_year, MAX(DECODE(t_month,'1月',t_value)) AS 一月, MAX(DECODE(t_month,'2月',t_value)) AS 二月, MAX(DECODE(t_month,'3月',t_value)) AS 三月, MAX(DECODE(t_month,'4月',t_value)) AS...
Problem 1.?Dance Mooves Farmer John’s cows are showing off their new dance mooves! At first, all?NN?cows (2≤N≤1052≤N≤105) stand in a line with cow?ii?in the?iith position in line. The sequence of dance mooves is given by?KK?(1≤K≤2?1051≤K≤2?105)...
Problem 1.?Dance Mooves Farmer John’s cows are showing off their new dance mooves! At first, all?NN?cows (2≤N≤1052≤N≤105) stand in a line with cow?ii?in the?iith position in line. The sequence of dance mooves is given by?KK?(1≤K≤2?1051≤K≤2?105)...
首先声明一下，暴力完全是过不了的 Problem 1. Find and Replace Bessie is using the latest and greatest innovation in text-editing software, miV! Its powerful find-and-replace feature allows her to find all occurrences of a lowercase English letter?c?...
