Question

这是我的表格（Scanner scn = new Scanner (System.in); System.out.print("String text: "); //Text from user String str= scn.nextLine(); str = str.replaceAll("\\s+",""); char[] cArray = text.toCharArray(); //Convert String to char array for (int i = 0; i < cArray.length; i++) { for (int row = 0; row < charArray.length; row++) { for (int col = 0; col < charArray[row].length; col++) { System.out.println("i = " + i); //charArray[row][col] = letters[i]; //I'm supposed to put in the converted String to char and put into the 2D Array of 6 by 6. When I executed the script, there is an array out of bound exception System.out.println("charArray[" + row + "]" + "[" + col + "]" + "cArray[" + i + "]"); ++i; System.out.println("End of col for loop"); } System.out.println("End of row for loop"); } i = i; } System.out.println("End of i for loop");，oratorId）。一个quote有一个或多个orator（文字）

我想为此quote选择唯一的oratorId和最小长度quote，但此orator的长度应超过15个字符。

Answer 1

试试这个：

SELECT oratorId, quote from (
    SELECT t.*,  ROW_NUMBER() OVER( PARTITION BY oratorId ORDER BY len) as rn  FROM (
       SELECT your_table.* , LENGTH(quote) AS len FROM your_table WHERE LENGTH(quote)  > 15
    ) t
) tt
 where rn = 1

每位演说家的最小长度报价

1 个答案: