摘要:
查询书的价格10到20 之前显示10to20 没有显示unknown CREATE TABLE book(price INT,NAME VARCHAR(20)) SELECT NAME AS '名字',price,(CASE WHEN price>=10 AND price<=20 THEN '10 阅读全文
摘要:
package com.test; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class MainRun { public static vo 阅读全文