拆分Sql列中内容的拆分. /*按照符号分割字符串*/ create function [dbo].[m_split](@c varchar(2000),@split varchar(2)) returns @t table(col varchar(200)) as begin while(charindex(@split,@c)<>0) begin insert @t(col) values (substring(@c,1,charindex(@split,@c)-1)) set @c =
//求出4×4矩阵中最大和最小元素值及其所在行下标和列下标,求出两条主对角线元素之和 #include <stdio.h> int main() { int sum=0; int max,min; int max1,max2;//记录最大值的坐标 int min1,min2;//记录最小值的坐标 int i,j; int a[4][4]; //为数组赋值 for(i=0;i<4;i++) { for(j=0;j<4;j++) { scanf("%d",&
1,把表中某一列的内容合并为一行 select province,CONCAT('[\"全部\",\"',GROUP_CONCAT(city ORDER BY cityID separator '\"\,\"'),'\"]') as group1 from hat_city a LEFT JOIN hat_province b on a.father=b. provinceID GROUP BY father ORDER BY cityID:根据