selectCITY,length(CITY)fromSTATIONwherelength(CITY)>=ALL(selectlength(CITY)fromSTATION)orlength(CITY)<=ALL(selectlength(CITY)fromSTATION)orderby2desc,1limit2; 解题思路: 方法2:union+limit (selectCITY,length(CITY)from
首先,HackerRank上的题目种类非常丰富,涵盖了SQL、Python、数学、算法、数据库、数据结构、人工智能等等。无论你是初学者还是有一定基础的,都能在这里找到适合自己的题目。 如何使用HackerRank?进入网站后,点击“Practice”,选择你感兴趣的领域,比如SQL、Python等。每个领域都被细分为不同的模块,比如SQL就有Basic SELECT...
basic-select.md Breadcrumbs SQL-hackerrank-problems / basic-select.md Latest commit chhayac Update basic-select.md Jan 18, 2018 340239b·Jan 18, 2018 History History ###Revising the Select Query-1 Query all columns for all American cities in CITY with populations larger than 100,000. The ...
Prepare SQL SQLRevising the Select Query I EasySQL (Basic)Max Score: 10Success Rate: 95.97% Solve Challenge Revising the Select Query II EasySQL (Basic)Max Score: 10Success Rate: 98.72% Solve Challenge Select All EasySQL (Basic)Max Score: 10Success Rate: 99.54% Solve Challenge Select By ID ...
SQL SubdomainChallengePointsSolution Basic Select Revising the Select Query I 10 MySQL Solution Basic Select Revising the Select Query II 10 MySQL Solution Basic Select Select All 10 MySQL Solution Basic Select Select By ID 10 MySQL Solution Basic Select Japanese Cities' Attributes 10 MySQL Solution...
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Basic Select Revising the Select Query I 10 Easy Solution.sql Basic Select Revising the Select Query II 10 Easy Solution.sql Basic Select Select All 10 Easy Solution.sql Basic Select Select By ID 10 Easy Solution.sql Basic Select Japanese Cities' Attributes 10 Easy Solution.sql Basic Select Ja...
C: 可以执行select语句 D: 可以执行delete语句 下面Statement接口的方法中,用于执行各种SQL语句的是( ) A: executeUpdate(Stringsql) B: executeQuery(Stringsql) C: execute(Stringsql) D: executeDelete(Stringsql) 下面选项中,用于将参数化的SQL语句发送到数据库的方法是( ) A: prepareCall(Stringsql) B: pre...
PAT (Basic Level) Practice (中文)1077 互评成绩计算 1077 互评成绩计算在浙大的计算机专业课中,经常有互评分组报告这个环节。一个组上台介绍自己的工作,其他组在台下为其表现评分。...最后这个组的互评成绩是这样计算的:所有其他组的评分中,去掉一个最高分和一个最低分,剩下的分数取平均分记为 G1;...
Prepare SQL SQLRevising the Select Query I EasySQL (Basic)Max Score: 10Success Rate: 95.97% Solve Challenge Revising the Select Query II EasySQL (Basic)Max Score: 10Success Rate: 98.72% Solve Challenge Select All EasySQL (Basic)Max Score: 10Success Rate: 99.54% Solve Challenge Select By ID ...