I am creating a database in Oracle Application Express and am having a problem inserting a date into one of the tables.
INSERT INTO VIEWING( VIEWING_ID, VIEWING_DATE, TIME, PROPERTY_ID, AGENT_ID)
VALUES('3', '12-07-2015' ,'10:00','1', '101');
I've tried every combination of date format, and trying to force the date to my correct format
to_date('12-07-2015','MM-DD-YYYY')
But nothing is working
CREATE TABLE Viewing (
Viewing_ID number(10) NOT NULL,
Viewing_Date date NOT NULL,
Time timestamp(7) NOT NULL,
Property_ID number(10) NOT NULL,
Agent_ID number(10) NOT NULL,
PRIMARY KEY (Viewing_ID));
ALTER TABLE Viewing ADD CONSTRAINT FK_Viewing_Agent_ID FOREIGN KEY (Agent_ID) REFERENCES Agent (Agent_ID);
ALTER TABLE Viewing ADD CONSTRAINT FK_Viewing_Property_ID FOREIGN KEY (Property_ID) REFERENCES Property (Property_ID);
Every Resource I have found suggests it is most likely a parsing or syntax error but so far nothing has helped.
I have a second table in the schema that I can insert dates into without a problem, the only difference on this table is that the date is required (I have tried making it nullable to test and I still get the same error)
I should point out that Im am completely new to Oracle and this is part of a study project. If I had I choice I would be using SQL Server! But Ive been at this for hours and think its time to admit defeat!
Thanks
It is due to TIME column, not VIEWING_DATE. This worked:
INSERT INTO VIEWING( VIEWING_ID, VIEWING_DATE, TIME, PROPERTY_ID, AGENT_ID)
VALUES(4, date '2015-12-07' , timestamp '2015-12-07 10:00:00',1, 101);
Related
If I have a postgresql table like:
CREATE TABLE IF NOT EXISTS public.time_series
(id serial PRIMARY KEY,
variable_id integer NOT NULL,
datetime timestamp with time zone NOT NULL,
value real NOT NULL,
edit_datetime timestamp with time zone NOT NULL DEFAULT now())
Im not having any constrains here except the primary key. For now..
And i want to have the option to either UPDATE OR INSERT new data where it is essentially the same variable for the same datetime. So that I can choose to either overwrite or just have a new version.. How do a proceede to do that?
Without constrains and if I want to INSERT some data; I do some WHERE NOT EXISTS where i make sure that the new data does not correlate with a row that has the same variable_id, datetime, and value. And it works just fine.
Now if the case is that I want to UPDATE if it exists and else INSERT I make a CONSTRAINT like:
ALTER TABLE public.time_series
ADD CONSTRAINT unique_comp UNIQUE (variable_id, datetime)
And updates the row if there is a conflict and INSERT if there is non.
And it works just fine..
But, again, what if I for some variables wants pervious "versions" where i can see them based on edit_datetime and want some other variables to be overwritten with the new data? Currently one way rules out the other one.
BR
I have to create this project for one of my assignments and I have to use Transact-SQL to create this database. I have changed this below code many times to avoid this error but its still keep coming and can't think of any reason for this.
CREATE TABLE Job
(
Job_ID INT NOT NULL IDENTITY (500, 1),
Pickup_Address VARCHAR(255),
Destination_Address VARCHAR(255),
Crew_Name VARCHAR(255),
Customer_Name VARCHAR(255),
PRIMARY KEY(Job_ID)
)
GO
INSERT INTO Job(Pickup_Address,Destination_Address,Crew_Name,Customer_Name)
VALUES ('Ceylinco Centre Building, 3rd Floor, Nawam Mawatha','NO.50, Sumanagala Road,Rathmalana','Maharagama Crew 1','Dilan'),
('3/82, ST.JUDE LANE,Dalugama','19A, 4th Lane,Koswatthe Rd','Maharagama Crew 2','Kasun'),
('19 Saunders Place,Colombo 12','54/3, Elapitiwala,Ragama','Kottawa Crew 1','Kelly'),
('381 Prince of Wales Avenue,Colombo 14','51, SEA STREET,Colombo','Kottawa Crew 2','Kasun'),
('250 Galle Road,Colombo 03','34, Pepiliyana Road,Nugegoda','Nugegoda Crew 2','Alan')
GO
CREATE TABLE Loads
(
Load_ID INT NOT NULL IDENTITY (1, 1),
Job_ID INT NOT NULL FOREIGN KEY REFERENCES Job(Job_ID),
Load_Type VARCHAR(255),
Product_Name VARCHAR(255),
Loaded_Time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
PRIMARY KEY (Load_ID, Job_ID),
)
GO
I have executed the above SQL code, previously I couldn't create the Loads table and got an error
Invalid referencing table
After I tried to avoid this now it can be executed although there is an error and it's in below. what I need to know is the reason for this and will it be a problem if I keep this as it is. Thank you
Foreign key 'FK_Loads_c6b32eef601ef719ed3' References invalid table 'job'
The code works, you may have the case sensitive collation. To know the collation you can run this code:
SELECT SERVERPROPERTY('collation');
If this is the case, you can change it (2008 or higher, except azure) with code like the following (adding the desired collation):
ALTER DATABASE YOURS_DATABASE
COLLATE Modern_Spanish_CS_AS ;
more information here here
I've been stuck with this problem for a few days now and I've been through many different questions that i've found via google/stack overflow but I've been unable to solve it.
I need to create a table that allows a user to enter a date for an appointment, one of the constraints is that the date that is entered can only be a date that is a monday or a friday.
Here are several of my attempts, some worked in that they allow me to create the table, but then when it comes to entering data, it says invalid month, invalid datatype or a plethora of other errors. (I've also removed other columns from the below code just because they're not relevant to the question).
CREATE TABLE t_appointments
(appointment_id NUMBER(10,0) CONSTRAINT appointments_appoint_id_pk PRIMARY KEY,
appoint_date DATE CONSTRAINT appointments_app_date_nn NOT NULL
CONSTRAINT appointments_app_date_ck CHECK (to_char(appoint_date,'Day') IN ('Monday','Friday'));
I also tried
CREATE TABLE t_appointments
(appointment_id NUMBER(10,0) CONSTRAINT appointments_appoint_id_pk PRIMARY KEY,
appoint_date DATE CONSTRAINT appointments_app_date_nn NOT NULL
CONSTRAINT appointments_app_date_ck CHECK (to_char(to_date(appoint_date,'DD-MM-YYYY'),'Day') IN ('Monday','Friday'));
Any help would be greatly appreciated, thank you.
This is the issue in Oracle:
Name of day, padded with blanks to display width of the widest name of day in the date language used for this element.
So, try this:
CONSTRAINT appointments_app_date_ck CHECK (to_char(appoint_date, 'Day') IN ('Monday ', 'Friday '))
Or, you can do:
CONSTRAINT appointments_app_date_ck CHECK (to_char(appoint_date, 'D') IN ('2', '6'))
CREATE TABLE Time(
Tipo VARCHAR(15) PRIMARY KEY,
DataInizio DATE,
DataFine DATE NOT NULL);
INSERT INTO Time VALUES('PreIscrizione', '2017-02-01', '2017-04-30');
INSERT INTO Time VALUES('Candidatura', '2017-05-01', '2017-07-30');
CREATE TABLE PreIscrizione(
Studente VARCHAR(16) REFERENCES Persona ON DELETE CASCADE ON UPDATE CASCADE PRIMARY KEY,
DataPreIscrizione DATE CHECK(DataPreIscrizione<(SELECT DataFine FROM Time WHERE Tipo = 'PreIscrizione')));
The table PreIscrizione allows to sign up a student, but it has to be done before a date indicated in the table Time. Obviously what i wrote above doesn't work, but it explains my idea. Which is the right way to solve this?
I am trying to make a procedure that takes makes potential empty "received" fields use the current date. I made a sequence called Order_number_seq that populates the order number (Ono) column. I don't know how to link errors in the orders table to a entry in the Orders_errors table.
this is what i have so far:
CREATE PROCEDURE Add_Order
AS BEGIN
UPDATE Orders
CREATE Sequence Order_number_seq
Start with 1,
Increment by 1;
UPDATE Orders SET received = GETDATE WHERE received = null;
These are the tables I am working with:
Orders table
(
Ono Number Not Null,
Cno Number Not Null,
Eno Number Not Null,
Received Date Null,
Shipped_Date Date Null,
Creation_Date Date Not Null,
Created_By VARCHAR2(10) Not Null,
Last_Update_Date Date Not Null,
Last_Updated_By VARCHAR2(10) Not Null,
CONSTRAINT Ono_PK PRIMARY KEY (Ono),
CONSTRAINT Cno_FK FOREIGN KEY (Cno)
REFERENCES Customers_Proj2 (Cno)
);
and
Order_Errors table
(
Ono Number Not Null,
Transaction_Date Date Not Null,
Message VARCHAR(100) Not Null
);
Any help is appreciated, especially on linking the orders table errors to create a new entry in OrderErrors table.
Thanks in advance.
Contrary to Martin Drautzburg's answer, there is no foreign key for the order number on the Order_Errors table. There is an Ono column which appears to serve that purpose, but it is not a foreign as far as Oracle is concerned. To make it a foreign key, you need to add a constraint much like the Cno_FK on Orders. An example:
CREATE TABLE Order_Errors
(
Ono Number Not Null,
Transaction_Date Date Not Null,
Message VARCHAR(100) Not Null,
CONSTRAINT Order_Errors_Orders_FK FOREIGN KEY (Ono) REFERENCES Orders (Ono)
);
Or, if your Order_Errors table already exists and you don't want to drop it, you can use an ALTER TABLE statement:
ALTER TABLE Order_Errors
ADD CONSTRAINT Order_Errors_Orders_FK FOREIGN KEY (Ono) REFERENCES Orders (Ono)
;
As for the procedure, I'm inclined to say what you're trying to do does not lend itself well to a PROCEDURE. If your intention is that you want the row to use default values when inserted, a trigger is better suited for this purpose. (There is some performance hit to using a trigger, so that's a consideration.)
-- Create sequence to be used
CREATE SEQUENCE Order_Number_Sequence
START WITH 1
INCREMENT BY 1
/
-- Create trigger for insert
CREATE TRIGGER Orders_Insert_Trigger
BEFORE INSERT ON Orders
FOR EACH ROW
DECLARE
BEGIN
IF :NEW.Ono IS NULL
THEN
SELECT Order_Number_Sequence.NEXTVAL INTO :NEW.Ono FROM DUAL;
END IF;
IF :NEW.Received IS NULL
THEN
SELECT CURRENT_DATE INTO :NEW.O_Received FROM DUAL;
END IF;
END;
/
This trigger will then be executed on every single row inserted into the Orders table. It checks if the Ono column was NULL and replaces it with an ID from the sequence if so. (Be careful that you don't ever provide an ID that will later be generated by the sequence; it will get a primary key conflict error.) It then checks if the received date is NULL and sets it to the current date, using the CURRENT_DATE function (which I believe was one of the things you were trying to figure out), if so.
(Side note: Other databases may not require a trigger to do this and instead could use a default value. I believe PostgreSQL, for instance, allows the use of function calls in its DEFAULT clauses, and that is how its SERIAL auto-increment type is implemented.)
If you are merely trying to update existing data, I would think the UPDATE statements by themselves would suffice. Is there a reason this needs to be a PROCEDURE?
One other note. Order_Errors has no primary key. You probably want to have an auto-incrementating surrogate key column, or at least create an index on its Ono column if you only ever intend to select off that column.
There are a number of confusing things in your question:
(1) You are creating a sequence inside a procedure. Does this even compile?
(2) Your procedure does not have any parameters. It just updates the RECEIVED column of all rows.
(3) You are not telling us what you want in the MESSAGE column.
My impression is that you should first go "back to the books" before you ask questions here.
As for your original question
how to link errors in the orders table to a entry in the Orders_errors
table.
This is aleady (correctly) done. The Orders_error table contains an ONO foreign key which points to an order.