我的数据集中的数据如下所示,即varchar数据类型。
123456789X
123456789x
123456789x
123456789X
请告知如何使用较低的从低到高于4的比值?谢谢。
我发现了如何通过以下方式解决此问题:
SELECT DISTINCT(TRANSLATE(LOWER(telephone),
'-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ',
'-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'))
答案 0 :(得分:1)
这是解决方案:
SELECT DISTINCT(TRANSLATE(LOWER(telephone),
'-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ',
'-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'))
答案 1 :(得分:0)
我将删除空格(使用#include<iostream>
using namespace std;
class triangle{ //data and method given by question
private:
float value1,value2;
public:
triangle(float h, float b);
float getHeight();
float getWidth();
float calculateArea();
};
triangle::triangle(float h, float b){
value1=h;
value2=b;
}
float triangle::getHeight(){
return value1;
}
float triangle::getWidth(){
return value2;
}
float triangle::calculateArea(){
float area;
area=(1/2)*value1*value2;
return area;
}
int main(){
triangle sample;
cout<<"Enter height: ";
cin>>h;
cout<<"Enter width: ";
cin>>b ;
sample.triangle(h,b);
sample.getHeight();
sample.getWidth();
sample.calculateArea();
cout<<"The area is "<<sample.calculateArea();
return 0;
}
),然后应用replace
:
distinct