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我不确定为什么在以下 SQL 查询中收到语法错误。

查询的目标（以及稍后列出的模式/创建的视图）是查找收入高于所有经理平均工资的经理的姓名和公司名称。

这是我编写的查询以及随之而来的错误：

select ManagerLastname, MFirstName, MMidInitial, company_name
  from ManagerInfo, Works
    (select avg(salary) as AverageManagerSalary, Lastname
     from Works,
     group by Lastname) Work1
where ManagerInfo.ManagerLastname = Work1.Lastname and
Works.salary > Work1.AverageManagerSalary;

ORA-00933: SQL command not properly ended : select ManagerLastname, MFirstName, MMidInitial, company_name from ManagerInfo, Works (select avg(salary) as AverageManagerSalary, Lastname from Works, group by Lastname) Work1 where ManagerInfo.ManagerLastname = Work1.Lastname and Works.salary > Work1.AverageManagerSalary

我不确定此查询中的语法错误在哪里。我认为所有括号和“标点符号”都是正确的，所以我认为这是嵌套选择语句的问题，但不确定该语句中需要更改的内容......

这是我的数据库的整体架构。这个模式以及我创建的上述视图正确“编译”，所以我知道错误与查询代码本身有关。

create table Employee(
    Lastname    varchar(10),
    FirstName   varchar(10),
    MidInitial  char(1),
    gender      char(1),
    street      varchar(10),
    city        varchar(10),
    primary key(Lastname, FirstName, MidInitial));

create table company(
    company_name    varchar(20),
    city    varchar(10),
    primary key(company_name));

create table Works(
    Lastname    varchar(10),
    FirstName   varchar(10),
    MidInitial  char(1),
    company_name    varchar(20),
    salary      numeric(8,2),
    primary key(Lastname, FirstName, MidInitial, company_name),
    foreign key(Lastname, FirstName, MidInitial) references Employee,
    foreign key(company_name) references company);

create table Manages(
    Lastname    varchar(10),
    FirstName   varchar(10),
    MidInitial  char(1),
    ManagerLastname varchar(10),
    MFirstName  varchar(10),
    MMidInitial char(1),
    start_date  date,
    primary key(Lastname, FirstName, MidInitial, ManagerLastname, MFirstName, MMidInitial),
    foreign key(Lastname, FirstName, MidInitial) references Employee);

create view ManagerInfo as
  (select distinct ManagerLastname, MFirstName, MMidInitial, street, city
   from Manages, Employee
   where Manages.ManagerLastname = Employee.Lastname and
  Manages.MFirstName = Employee.FirstName and
  Manages.MMidInitial = Employee.MidInitial);

顺便说一句，我正在使用 SQL for Oracle 11g R2。

感谢您的任何帮助，您可以提供; 非常感激。

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1 回答 1

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在 from 子句中的 Works 之后缺少逗号？（第一个）然后在您的子选择中的 Works 之后似乎有一个额外的逗号。

于 2013-09-22T02:29:56.350 回答