I am creating this code SQL code and I keep getting the same error from every line of the insert statements after the errors begin here statement. the error is, ORA-02291: integrity constraint violated - parent key not found. I think it has something to do with the employee section constraint EMPSUPERVRFK but, that is the only constraint that the error message would lead to.
-- keep these two commands at the top of every sql file
set echo on
set linesize 120
delete from Employee;
commit;
-- insert only managers first with their dno is null
INSERT INTO Employee VALUES
('James','E','Borg',888665555,'10-NOV-1937','450 Stone, Houston, TX','M',55000,null,null);
INSERT INTO Employee VALUES
('Franklin','T','Wong',333445555, to_date('1955-12-08', 'YYYY-MM-DD'), '638 Voss, Houston, TX','M',40000,888665555,null);
INSERT INTO Employee VALUES
('Jennifer','J','Zelaya',987654321,'20-JUN-1941','291 Berry, Bellaire, TX','F',43000,888665555,null);
delete from Department;
commit;
insert into Department values ('Research',5,333445555,'22-MAY-1988');
insert into Department values ('Headquarters',1,888665555,'19-JUN-1981');
insert into Department values ('Administration',1,888665555,'01-JAN-1995');
-- now, update employee.dno for managers
UPDATE Employee SET dno = 1 WHERE ssn = 888665555;
UPDATE Employee SET dno = 5 WHERE ssn = 333445555;
-- need to update the rest of managers
-- insert the rest of non-manager employees, supervisors first
--errors begin here
delete from Employee;
commit;
INSERT INTO Employee VALUES ('John','B','Smith',123456789,'09-JAN-1965','731 Fondren, Houston, TX','M',30000,333445555,5);
insert into Employee values ('Alica','J','Zelya',999887777,'19-JAN-1968','3321 Castle, Spring, TX','F',25000,987654321,4);
insert into Employee values ('Ramesh','K','Narayan',666884444,'15-SEP-1962', '975 Fire Oak, Humnle, TX','M',38000,333445555,5);
insert into Employee values ('Joyce','A','English',453453453,'31-JUL-1972','5631 Rice, Houston, TX','F',25000,333445555,5);
insert into Employee values ('Ahmad','V','Jabbar',987987987,'29-MAR-1969','980 Dallas, Houston, TC','M',25000,987654321,4);
--Project
delete from PROJECT;
commit;
insert into PROJECT values ('ProductY',2,'Sugarland',5);
insert into PROJECT values ('ProductZ',3,'Houston',5);
insert into PROJECT values ('Computerication',10,'Stafford',4);
insert into PROJECT values ('Reorganization',20,'Houston',1);
insert into PROJECT values ('Newbenefits',30,'Stafford',4);
--dept_Locations
delete from DEPT_LOCATIONS;
commit;
insert into DEPT_LOCATIONS values (1, 'Houston');
insert into DEPT_LOCATIONS values (4,'Stafford');
insert into DEPT_LOCATIONS values (5,'Bellaire');
insert into DEPT_LOCATIONS values (5,'Sugarland');
insert into DEPT_LOCATIONS values (5,'Houston');
--works_on 16
delete from WORKS_ON;
commit;
insert into WORKS_ON values (123456789,1,32.5);
insert into WORKS_ON values (123456789,2,7.5);
insert into WORKS_ON values (666884444,3,40.0);
insert into WORKS_ON values (453453453,1,20.0);
insert into WORKS_ON values (453453453,2,20.0);
insert into WORKS_ON values (333445555,2,10.0);
insert into WORKS_ON values (333445555,3,10.0);
insert into WORKS_ON values (333445555,10,10.0);
insert into WORKS_ON values (333445555,20,10.0);
insert into WORKS_ON values (999887777,30,30.0);
insert into WORKS_ON values (999887777,10,10.0);
insert into WORKS_ON values (987987987,10,35.0);
insert into WORKS_ON values (987987987,30,5.0);
insert into WORKS_ON values (987654321,30,20.0);
insert into WORKS_ON values (987654321,20,15.0);
insert into WORKS_ON values (888665555,20,null);
--dependent 7
delete from DEPENDENT;
commit;
insert into DEPENDENT values (333445555,'Alice','F','05-APR-1986','Daughter');
insert into DEPENDENT values (333445555,'Theodore','M','25-OCT-1983','Son');
insert into DEPENDENT values (333445555,'Joy','F', '03-MAY-1958','Spouse');
insert into DEPENDENT values (987654321,'Abner','M', '28-FEB-1942','Spouse');
insert into DEPENDENT values (123456789,'Michael','M','04-JAN-1988','Son');
insert into DEPENDENT values (123456789,'Alice','F','30-DEC-1988','Daughter');
insert into DEPENDENT values (123456789,'Elizabeth','F', '05-MAY-1967','Spouse');
-----------------------------------------------------------------------------------
set echo on
set linesize 120
drop table Employee cascade constraints;
commit;
create table Employee
(
fname varchar2(15),
minit varchar2(1), -- can be char
lname varchar2(15),
ssn number,
bdate date,
address varchar2(50),
sex varchar2(1) CHECK(Sex = 'M' or Sex = 'F'),
salary number CHECK(20000 <= salary AND 100000 >= salary),
superssn number,
dno number DEFAULT 0,
constraint EMPPK
primary key(ssn),
constraint EMPSUPERVRFK
foreign key(superssn) references Employee(ssn)
ON DELETE SET NULL
);
drop table Department cascade constraints;
commit;
create table Department
(
dname varchar2(15),-- NOT NULL,
dnumber number,
mgrssn number,
mgrstartdate date,
constraint DEPTPK
primary key(dnumber),
constraint DEPTMGRFK
foreign key(mgrssn) references Employee(ssn)
ON DELETE SET NULL
);
alter table Employee add
constraint EMPDEPTFK foreign key(dno) references Department(dnumber)
ON DELETE SET NULL;
drop table DEPT_LOCATIONS;
create table DEPT_LOCATIONS
(
Dnumber number,
Dlocation varchar2(15),
constraint PK_DnoDloc primary key(Dnumber,Dlocation)
);
COMMIT;
drop table PROJECT;
create table PROJECT
(
Pname varchar2(15),
Ponumber number primary key,
Plocation varchar2 (15),
Dnum number,
foreign key (Dnum) references Department(dnumber)
);
Commit;
drop table DEPENDENT;
create table DEPENDENT
(
Essn number,
Dependent_name varchar2(15),
Sex Char,
Bdate Date,
Relationship varchar2(15),
foreign key(Essn) references Employee(ssn) --
ON DELETE SET NULL,
constraint PK_essn
primary key(Essn,Dependent_name)
);
COMMIT;
drop table WORKS_ON;
create table WORKS_ON
(
Essn number,
Pno number,
Hours number,
foreign key(Essn) references Employee(ssn)--
ON DELETE SET NULL,
foreign key(Pno) references PROJECT(Ponumber)
ON DELETE SET NULL,
constraint PK_SSN
primary key(Essn, Pno)
);
commit;
----------------------------------------------------------------
-- keep these two commands at the top of every sql file
set echo on
set linesize 120
-- test queries, not to be submitted
select count(*) from employee;
select count(*) as DEPT_COUNT from department;
-- comment out the above queries for your homework
-- a the first name, last name of employees who work in department 5.
select fname, lname from employee where dno = 5;
-- b the first name, last name of every employee and name of his/her department
select E.fname as FIRST_NAME, E.lname LAST_NAME, D.dname DEPARTMENT_NAME
from employee E, department D
where E.dno = D.dnumber;
--c The first name, last name of employees who works at the 'Research' department
select e.fname , e.lname , Dname
from employee e inner join department d on e.dno=d.dname
where d.name ='Research';
--d. The first name, last name of employee who is the manager of the 'Research' department
select e.fname , e.lname , Dname
from employee e inner join department d on e.dno=d.dname
where d.name ='Research' and e.super_ssn=d.mgr_ssn;
--e. The first name, last name of employees who works on the 'Computerization' project.
select e.fname,e.lname
from employee e inner join department d on e.dno=d.dnumber inner join project p on d.dnumber=p.dnum
where p.pname="Computerization";
this happens because you are inserting values to table that depends on other table that is still empty, you should insert on that table first before this one
for example, suppose you have employee table, and department table, in which every employee must be assigned to a department, so when you input employee Bob to department IT, it would result in error, since there is no IT yet in department table. so you need to input IT on department table, then you can input Bob to employee table
or, you can disable integrity check when importing sql, but this setting is different for each DB engine, so I can't give you an example
create table STADIUM
( stad_location varchar2(20) primary key
, stad_name varchar2(10)
, stad_capacity number(5)
, match_ID char(8)
, stall_ID char(4)
, foreign key (match_ID) references MATCH (match_ID) ON DELETE SET NULL
, foreign key (stall_ID) references STALL (stall_ID) ON DELETE SET NULL);
create table TRANSPORTATION
(registra_no char(6) primary key
, transp_type varchar2(10)
, capacity number(2)
);
create table CEREMONY
(cerem_type varchar2(10) primary key
, cerem_name varchar2(15)
, FIFA_theme_song varchar2(20)
, p_ID char(8)
, stad_location varchar2(20)
, foreign key (p_ID) references PERFORMER(p_ID) ON DELETE SET NULL
, foreign key (stad_location) references STADIUM(stad_location)ON DELETE SET NULL
);
create table REFEREE( ref_ID char(8) primary key
, ref_name varchar2(20)
, yo_exp number(2)
, match_ID char(8)
, registra_no char(6)
, foreign key (match_ID) references MATCH (match_ID) ON DELETE SET NULL
, foreign Key (registra_no) references TRANSPORTATION(registra_no) ON DELETE SET NULL);
insert into CEREMONY values('Opening', 'Speech', 'Colors', 'PP561475', 'Al-Waab Street');
insert into REFEREE values('RF503624','Mike Dean', 25, 'MM129456', 'QLM729'); select * from CEREMONY;
select * from REFEREE;
Bunch of tables are missing, referenced by foreign keys so I'm creating them first:
SQL> -- Missing tables, referenced by foreign keys
SQL> create table match (match_id char(8) primary key);
Table created.
SQL> create table stall (stall_id char(4) primary key);
Table created.
SQL> create table performer (p_id char(8) primary key);
Table created.
SQL>
Your tables:
SQL> create table STADIUM
2 ( stad_location varchar2(20) primary key
3 , stad_name varchar2(10)
4 , stad_capacity number(5)
5 , match_ID char(8)
6 , stall_ID char(4)
7 , foreign key (match_ID) references MATCH (match_ID) ON DELETE SET NULL
8 , foreign key (stall_ID) references STALL (stall_ID) ON DELETE SET NULL);
Table created.
SQL> create table TRANSPORTATION
2 (registra_no char(6) primary key
3 , transp_type varchar2(10)
4 , capacity number(2)
5 );
Table created.
SQL> create table CEREMONY
2 (cerem_type varchar2(10) primary key
3 , cerem_name varchar2(15)
4 , FIFA_theme_song varchar2(20)
5 , p_ID char(8)
6 , stad_location varchar2(20)
7 , foreign key (p_ID) references PERFORMER(p_ID) ON DELETE SET NULL
8 , foreign key (stad_location) references STADIUM(stad_location)ON DELETE SET NULL
9 );
Table created.
SQL> create table REFEREE( ref_ID char(8) primary key
2 , ref_name varchar2(20)
3 , yo_exp number(2)
4 , match_ID char(8)
5 , registra_no char(6)
6 , foreign key (match_ID) references MATCH (match_ID) ON DELETE SET NULL
7 , foreign Key (registra_no) references TRANSPORTATION(registra_no) ON DELETE SET NULL);
Table created.
SQL>
Inserts into tables referenced by ceremony and referee:
SQL> insert into performer values ('PP561475');
1 row created.
SQL> insert into stadium (stad_location) values ('Al-Waab Street');
1 row created.
SQL> insert into match values ('MM129456');
1 row created.
SQL> insert into transportation (registra_no) values ('QLM729');
1 row created.
SQL>
Your inserts & result of your select statements:
SQL> insert into CEREMONY values('Opening', 'Speech', 'Colors', 'PP561475', 'Al-Waab Street');
1 row created.
SQL> insert into REFEREE values('RF503624','Mike Dean', 25, 'MM129456', 'QLM729');
1 row created.
SQL> select * from CEREMONY;
CEREM_TYPE CEREM_NAME FIFA_THEME_SONG P_ID STAD_LOCATION
---------- --------------- -------------------- -------- --------------------
Opening Speech Colors PP561475 Al-Waab Street
SQL> select * from REFEREE;
REF_ID REF_NAME YO_EXP MATCH_ID REGIST
-------- -------------------- ---------- -------- ------
RF503624 Mike Dean 25 MM129456 QLM729
SQL>
Therefore, if you do everything right, everything is right.
I used the following script to create 4 test tables: dept1, dept2, dept3, and dept4. The code is exactly the same for each table. All tables are created successfully but the insert into statements only worked for the first three tables. After dropping all tables and purge the recyclebin, I moved Create Table dept4 and the following insert into statements to the top of the code. Then the insert into statement does not work for Dept3. Basically, I can only insert data into the first three tables in the script and not able to insert data into the 4th table on the script.
The error message is the following:
SQL Error: ORA-00604: error occurred at recursive SQL level 1
ORA-30667: cannot drop NOT NULL constraint on a DEFAULT ON NULL column
00604. 00000 - "error occurred at recursive SQL level %s"
This happened after some users created identity columns in Oracle 12.1 database. Some users used:
GENERATED ALWAYS AS IDENTITY
Other users used:
GENERATED BY DEFAULT ON NULL AS IDENTITY
Code used:
CREATE TABLE DEPT1 (
DEPT1NO NUMBER(2) NOT NULL,
DNAME VARCHAR2(14),
LOC VARCHAR2(13),
CONSTRAINT DEPT1_PRIMARY_KEY PRIMARY KEY (DEPT1NO));
INSERT INTO DEPT1 VALUES (10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT1 VALUES (20,'RESEARCH','DALLAS');
INSERT INTO DEPT1 VALUES (30,'SALES','CHICAGO');
INSERT INTO DEPT1 VALUES (40,'OPERATIONS','BOSTON');
CREATE TABLE DEPT2 (
DEPT2NO NUMBER(2) NOT NULL,
DNAME VARCHAR2(14),
LOC VARCHAR2(13),
CONSTRAINT DEPT2_PRIMARY_KEY PRIMARY KEY (DEPT2NO));
INSERT INTO DEPT2 VALUES (10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT2 VALUES (20,'RESEARCH','DALLAS');
INSERT INTO DEPT2 VALUES (30,'SALES','CHICAGO');
INSERT INTO DEPT2 VALUES (40,'OPERATIONS','BOSTON');
CREATE TABLE DEPT3 (
DEPT3NO NUMBER(2) NOT NULL,
DNAME VARCHAR2(14),
LOC VARCHAR2(13),
CONSTRAINT DEPT3_PRIMARY_KEY PRIMARY KEY (DEPT3NO));
INSERT INTO DEPT3 VALUES (10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT3 VALUES (20,'RESEARCH','DALLAS');
INSERT INTO DEPT3 VALUES (30,'SALES','CHICAGO');
INSERT INTO DEPT3 VALUES (40,'OPERATIONS','BOSTON');
CREATE TABLE DEPT4 (
DEPT4NO NUMBER(2) NOT NULL,
DNAME VARCHAR2(14),
LOC VARCHAR2(13),
CONSTRAINT DEPT4_PRIMARY_KEY PRIMARY KEY (DEPT4NO));
INSERT INTO DEPT4 VALUES (10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT4 VALUES (20,'RESEARCH','DALLAS');
INSERT INTO DEPT4 VALUES (30,'SALES','CHICAGO');
INSERT INTO DEPT4 VALUES (40,'OPERATIONS','BOSTON');