思

题目 SQL架构： Create table If Not Exists Employee (Id int, Name varchar(255), Salary int, ManagerId int) Truncate table Employee insert into Employee (Id, Name, Salary, ManagerId) values ('1', 'Joe', '7...

题目 SQL架构 Create table If Not Exists Logs (Id int, Num int) Truncate table Logs insert into Logs (Id, Num) values ('1', '1') insert into Logs (Id, Num) values ('2', '1') insert into Logs (Id, Num) va...

题目 SQL架构： Create table If Not Exists Scores (Id int, Score DECIMAL(3,2)) Truncate table Scores insert into Scores (Id, Score) values ('1', '3.5') insert into Scores (Id, Score) values ('2', '3.65') ...

题目 编写一个 SQL 查询，获取 Employee 表中第 n 高的薪水（Salary）。 ±—±-------+ | Id | Salary | ±—±-------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | ±—±-------+ 例如上述 Employee 表，n = 2 时，应返回第二高的薪水 200。如果不存在第 n 高的薪水...

题目 SQL架构 Create table If Not Exists Employee (Id int, Salary int) Truncate table Employee insert into Employee (Id, Salary) values ('1', '100') insert into Employee (Id, Salary) values ('2', '200') ...

题目描述 SQL架构 Create table Person (PersonId int, FirstName varchar(255), LastName varchar(255)) Create table Address (AddressId int, PersonId int, City varchar(255), State varchar(255)) Truncate table ...