无法在我的Bug_Project表中插入行

时间：2019-12-03 14:13:35

标签： sql oracle

我正在用oracle编写数据库，但我对以下错误代码有些困惑：

Error starting at line : 95 in command -
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (00, 00)
Error at Command Line : 95 Column : 33
Error report -
SQL Error: ORA-00904: "PROJECT_ID": invalid identifier
00904. 00000 -  "%s: invalid identifier"
*Cause:    
*Action:

我是oracle和sql的新手，不确定哪个标识符无效。

我查看了Bug和项目之间的日期，它们都相关，所以我不确定可能是什么问题。

这可能是个小问题，但使我感到困惑。

我的代码显示在下面，任何帮助将不胜感激：

--CREATE SCRIPTS
/*put your create scripts here – your script should not commented out*/

CREATE TABLE Project
(
    Proj_ID integer,
    Proj_Name varchar(10),
    Proj_Start_Date date,
    primary key (Proj_ID)
);

CREATE TABLE Bug
(
    Bug_ID integer,
    Bug_Type varchar(100),
    Bug_Desc varchar(100),
    Bug_Time date,
    primary key(Bug_ID)
);

CREATE TABLE Engineer
(
    Engineer_ID integer,
    Engineer_Name varchar(10),
    Engineer_Type varchar(20),
    primary key (Engineer_ID)
);

CREATE TABLE Bug_Project
(
    Bug_ID integer,
    Proj_ID integer,
    primary key(Bug_ID, Proj_ID),
    foreign key(Bug_ID) references Bug (Bug_ID),
    foreign key(Proj_ID) references  Project (Proj_ID)
);

CREATE TABLE Fix_Allocation
(
    Engineer_ID integer,
    Bug_ID integer,
    primary key(Engineer_ID, Bug_ID),
    foreign key(Engineer_ID) references Engineer (Engineer_ID),
    foreign key(Bug_ID) references Bug (Bug_ID)
);

CREATE TABLE Test_Allocation
(
    Engineer_ID integer,
    Bug_ID integer,
    primary key(Engineer_ID, Bug_ID),
    foreign key(Engineer_ID) references Engineer (Engineer_ID),
    foreign key(Bug_ID) references Bug (Bug_ID)
);

CREATE TABLE Note
(
    Engineer_ID integer,
    Bug_ID integer,
    Note_author varchar(10),
    Note_contents varchar(20),
    primary key(Engineer_ID, Bug_ID),
    foreign key(Engineer_ID) references Engineer (Engineer_ID),
    foreign key(Bug_ID) references Bug (Bug_ID)
);

COMMIT;
--INSERT SCRIPTS
/*put your insert scripts here – your script should not commented out */

INSERT INTO Project(Proj_ID, Proj_Name, Proj_Start_Date) VALUES (00, 'Project 1', DATE '1980-02-14');
INSERT INTO Project(Proj_ID, Proj_Name, Proj_Start_Date) VALUES (01, 'Project 2', DATE '1985-12-11');
INSERT INTO Project(Proj_ID, Proj_Name, Proj_Start_Date) VALUES (02, 'Project 3', DATE '1992-06-03');
INSERT INTO Project(Proj_ID, Proj_Name, Proj_Start_Date) VALUES (03, 'Project 4', DATE '2000-07-22');
INSERT INTO Project(Proj_ID, Proj_Name, Proj_Start_Date) VALUES (04, 'Project 5', DATE '2012-03-19');
INSERT INTO Project(Proj_ID, Proj_Name, Proj_Start_Date) VALUES (05, 'Project 6', DATE '2015-10-21');

INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (00, 'Crash', 'Software stopped functioning properly and exited', timestamp '1980-03-20 09:26:50');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (01, 'Run Time Error', 'Wrong output due to a logical error', timestamp '1982-06-12 11:36:32');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (02, 'Compilation Error', 'Problems with the compiler, failed complication of source code', timestamp '1987-07-12 14:11:15');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (03, 'Crash', 'Software stopped functioning properly and exited', timestamp '1993-01-31 03:21:17');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (04, 'Logical Error', 'Unexpected behavior due to problem in source code', timestamp '1997-04-01 10:46:18');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (05, 'Run Time Error', 'Wrong output due to a logical error', timestamp '2001-12-24 12:12:37');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (06, 'GUI Error', 'Glitchy interface ', timestamp '2013-09-02 17:11:55');
INSERT INTO Bug(Bug_ID, Bug_Type, Bug_Desc, Bug_Time) VALUES (07, 'Run Time Error', 'Wrong output due to a logical error', timestamp '2016-02-03 11:11:21');

INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (00, 'Ava', 'Tester');
INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (01, 'Alexander', 'Fixer');
INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (02, 'Aiden', 'Fixer');
INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (03, 'Anthony', 'Tester');
INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (04, 'Adam', 'Fixer');
INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (05, 'Alex', 'Tester');
INSERT INTO Engineer(Engineer_ID, Engineer_Name, Engineer_Type) VALUES (06, 'John', 'Fixer');

INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (00, 00);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (01, 00);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (02, 01);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (03, 02);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (04, 02);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (05, 03);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (06, 04);
INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (07, 05);

INSERT INTO Fix_Allocation(Engineer_ID, Bug_ID) VALUES (01, 01);
INSERT INTO Fix_Allocation(Engineer_ID, Bug_ID) VALUES (02, 02);
INSERT INTO Fix_Allocation(Engineer_ID, Bug_ID) VALUES (04, 04);
INSERT INTO Fix_Allocation(Engineer_ID, Bug_ID) VALUES (06, 05);
INSERT INTO Fix_Allocation(Engineer_ID, Bug_ID) VALUES (06, 07);

INSERT INTO Test_Allocation VALUES ();
INSERT INTO Test_Allocation VALUES ();
INSERT INTO Test_Allocation VALUES ();

INSERT INTO Note VALUES ();
INSERT INTO Note VALUES ();
INSERT INTO Note VALUES ();

COMMIT;

--SELECT SCRIPT
/*put your select scripts here (with indication of which query is answered) – your script should not commented out

-- Query 1:  List of all the bugs, and their details.
SELECT * FROM Bug;

-- Query 2: List of all bugs, and their notes.

-- Query 3: List of all bugs, with their notes, and the engineers who have written them; sorted by name of engineer.

-- Query 4: List the bugs and how much cumulative time (in hours) they have taken; ordered by time taken.

-- Query 5: The bug that has taken most time to fix, and the projects it is connected to.

COMMIT;
--DROP SCRIPT
/*put your drop scripts here (in the correct order)– your script should not commented out

DROP TABLE Note;
DROP TABLE Test_Allocation;
DROP TABLE Fix_Allocation;
DROP TABLE Engineer;
DROP TABLE Bug_Project;
DROP TABLE Bug;
DROP TABLE Project;

COMMIT;

1 个答案:

答案 0 :(得分：1)

非常清楚，您没有使用正确的列ID。

创建import { Injectable } from '@angular/core'; import { HttpClient, HttpErrorResponse } from '@angular/common/http'; import { Observable, of, throwError } from 'rxjs'; import { catchError, retry } from 'rxjs/operators'; @Injectable() export class ApiService { api: string = 'https://newsapi.org/v2/top-headlines?country=gb&category=entertainment&apiKey=8ee8c21b20d24b37856fc3ab1e22a1e5'; constructor( private http: HttpClient, ) { } getAll(): Observable<any> { return this.http.get(this.api) .pipe( catchError(this.handleError) ); } private handleError(error: HttpErrorResponse) { if (error.error instanceof ErrorEvent) { console.log(error.error.message) } else { console.log(error.status) } return throwError( console.log('Something is wrong!')); }; } 表时：

Bug_Project

当您尝试插入CREATE TABLE Bug_Project ( Bug_ID integer, Proj_ID integer, --> You named project ID like this primary key(Bug_ID, Proj_ID), foreign key(Bug_ID) references Bug (Bug_ID), foreign key(Proj_ID) references Project (Proj_ID) ); 时，请使用Bug_Project而不是Project_ID：

Proj_ID

您需要做的是更改列名，例如：

INSERT INTO Bug_Project(Bug_ID, Project_ID) VALUES (00, 00); --> you are using Project_ID
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