将我的列转换为2位小数

var num = 3.1415926;
var formattedNum = num.toFixed(2);
console.log(formattedNum); // 输出 3.14

num = 3.1415926
formatted_num = "{:.2f}".format(num)
print(formatted_num)  # 输出 3.14

double num = 3.1415926;
DecimalFormat df = new DecimalFormat("#.00");
String formattedNum = df.format(num);
System.out.println(formattedNum); // 输出 3.14

double num = 3.1415926;
string formattedNum = num.ToString("0.00");
Console.WriteLine(formattedNum); // 输出 3.14

SELECT FORMAT(column_name, 2) FROM table_name;

SELECT ROUND(column_name, 2) FROM table_name;

SELECT ROUND(column_name, 2) FROM table_name;

SELECT ROUND(column_name, 2) FROM table_name;