I'm working with SQL Server Express, I created this table
CREATE TABLE inventory
(
id INT NOT NULL IDENTITY(1,1),
description nvarchar(50),
quantity int,
price money
)
when I insert this statement:
INSERT INTO inventory VALUES('water', 20, 1.50)
I get this error:
The number of columns in the query and the table must match. [ Number
of columns in query = 3, Number of columns in table = 4 ]
and when I put this statement:
INSERT INTO inventory VALUES(1, 'water', 20, 1.50)
I get this error:
The column cannot be modified. [ Column name = id ]
I thought identity would auto increment the value, so can't I do either, and how can I fix it? Thanks in advance
You must explicitly specify columns in your insert
insert Inventory(Description, Quantity, Price) values ( ...)
Related
I have been trying to create a production ERP using C# and SQL Server.
I want to create a table where the insert statement should only occur when at least one of the 3 main columns have a different value.
The main columns are prod_date, order_no, mach_no, shift_no, prod_type. If all the values are repeated a second time the data must not be entered.
create table p1_order(id int not null,
order_no int not null,
prod_date date notnull,
prod_type nvarchar(5),
shift_no int not null,
mach_no nvarchar(5) not null,
prod_qty,
float not null)
Based on the information you provided, You should check for the identical values when executing insert query, while writing your code. for example you can write:
if(prod_date == order_no == mach_no)// or any other 3 variables
{
//error of identical values
}
else{
// your insert query
}
The best way to implement this is by creating a unique constraint on the table.
alter table p1_order
add constraint UC_Order unique (prod_date,order_no,mach_no,shift_no,prod_type);
Due to some reason, if you are not able to create a unique constraint, you can write your query like the following using NOT EXISTS
insert into p1_order (order_no , prod_date , prod_type <remaining columns>)
select 123, '2022-09-20 15:11:43.680', 't1' <remaining values>
where not exists
(select 1
from p1_order
where order_no = 123 AND prod_date = '2022-09-20 15:11:43.680' <additional condition>)
I have to deal with the following table structure where columns are stored as rows:
CREATE TABLE Test
(
ID varchar(10),
RowNumber int,
Column1 varchar(200), -- sheet name
Column2 varchar(200), -- column name
Column3 varchar(200) -- column cell value
);
INSERT INTO Test
(ID, RowNumber,Column1,Column2, Column3)
VALUES
('ID0001', 1, 'sheet abc','InternalNumber','2016_2923_2321'),
('ID0001', 2, 'sheet abc','Customer','ACME'),
('ID0001', 3, 'sheet abc','Project','ABC_Project'),
('ID0001', 4, 'another sheet name','Subject','New Model'),
('ID0001', 5, 'another sheet name','SOP','2016'),
('ID0001', 6, 'another sheet name','EOP','2022')
I managed to turn the rows into proper columns (see fiddle at the bottom) but instead of getting multiple rows I want to put the data into a single row as each value in Column2 is a unique name.
In below picture at the top is the input table, the second one is what I have and the third is my desired output I cannot get to work:
See also my fiddle
I hope you can help me solve this issue.
Thank you in advance.
The basic way is to use PIVOT:
SELECT *
FROM (
SELECT ID,
Column2,
Column3
FROM #Test
) as t
PIVOT (
MAX(Column3) FOR Column2 IN ([InternalNumber],[Customer],[Project],[Subject],[SOP],[EOP])
) as p
Output:
ID InternalNumber Customer Project Subject SOP EOP
ID0001 2016_2923_2321 ACME ABC_Project New Model 2016 2022
If there are much more values in Column2 better use dynamic SQL.
Table:
CREATE TABLE appointment
(
id bigserial NOT NULL,
date_of_visit timestamp without time zone NOT NULL,
symptoms text[],
diseases text[],
lab_tests text[],
prescription_id bigint NOT NULL,
medicines jsonb,
CONSTRAINT appointment_pkey PRIMARY KEY (id),
CONSTRAINT appointment_prescription_id_fkey FOREIGN KEY (prescription_id)
REFERENCES prescription (id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION
)
WITH (
OIDS=FALSE
);
Insert statement:
INSERT INTO appointment values(
1,
now(),
'{"abc","def","ghi"}',
'{"abc","def","ghi"}',
'{"abc","def","ghi"}',
1,
'[{"sku_id": 1, "company": "Magnafone"}, {"sku_id": 2, "company": "Magnafone"}]')
I am trying to query against a jsonb array type column in postgres. I had some solution in hand which is as below. Somehow it is not working The error is - Cannot extract elements from a scalar.
SELECT distinct(prescription_id)
FROM appointment
WHERE to_json(array(SELECT jsonb_array_elements(medicines) ->>'sku_id'))::jsonb ?|array['1']
LIMIT 2;
Update:
The query runs just fine. There was some unwanted value in the column for some other rows because of which it was not running.
There are rows in the table containing a scalar value in column medicines instead of array.
You should inspect and properly update the data. You can find these rows with this query:
select id, medicines
from appointment
where jsonb_typeof(medicines) <> 'array';
Alternatively, you can check the type of values in this column in the query:
select prescription_id
from (
select distinct on (prescription_id)
prescription_id,
case
when jsonb_typeof(medicines) = 'array' then jsonb_array_elements(medicines) ->>'sku_id'
else null
end as sku_id
from appointment
) alias
where sku_id = '1'
limit 2;
or simply exclude non-array values in where clause:
select prescription_id
from (
select distinct on (prescription_id)
prescription_id,
jsonb_array_elements(medicines) ->>'sku_id' as sku_id
from appointment
where jsonb_typeof(medicines) = 'array'
) alias
where sku_id = '1'
limit 2;
I know this is rather basic, and i've searched for answers for quite some time, but I'm troubled.
I don't know how to make my coding readable on here but here it is.
Here's the query for making the table in question:
CREATE TABLE customer
( customer_id INT NOT NULL CONSTRAINT customer_pk PRIMARY KEY IDENTITY,
first_name VARCHAR(20) NOT NULL,
surname VARCHAR(20) NOT NULL,
dob DATETIME NOT NULL,
home_address VARCHAR(50) NOT NULL,
contact_number VARCHAR(10) NOT NULL,
referrer_id INT NULL FOREIGN KEY REFERENCES customer(customer_id),
);
And here's the problem code:
--fill customer table
INSERT INTO customer
VALUES ( 'Harold', 'Kumar', '2010-07-07 14:03:54', '3 Blue Ln, Perth', 0812391245, NULL )
INSERT INTO customer
VALUES ( 'Bingo', 'Washisnameoh', '2010-09-21 12:30:07', '3 Red St, Perth', 0858239471, NULL )
INSERT INTO customer
VALUES ( 'John', 'Green', '2010-11-07 14:13:34', '4 Blue St, Perth', 0423904823, NULL )
INSERT INTO customer
VALUES ( 'Amir', 'Blumenfeld', '2010-11-01 11:03:04', '166 Yellow Rd, Perth', 0432058323, NULL)
INSERT INTO customer
VALUES ( 'Hank', 'Green', '2010-07-07 16:04:24', '444 Orange Crs, Perth', 0898412429, 8)
(Specifically the line with the 8 value at the end.)
When executing the second query it responds with this:
Msg 547, Level 16, State 0, Line 1
The INSERT statement conflicted
with the FOREIGN KEY SAME TABLE constraint
"FK_customer_referr__5772F790". The conflict occurred in database
"master", table "dbo.customer", column 'customer_id'. The statement
has been terminated.
Appreciate your help with this.
1)
You have a primary key on customer_id - and your insert statements do not have value for customer id
2)
You have a self referencing foreign key in the form of referrer_id referring to customer_id.
When you are inserting a record with referrer_id which is not null, in your case which is '8', make sure you already inserted a record with customer_id '8'
How do you know that the referrer_id is supposed to be 8 ??
What you need to do is catch the value of the customer_id inserted, and then used that in your second query:
DECLARE #referToID INT
INSERT INTO dbo.Customer(first_name, surname, dob, home_address, contact_number, referrer_id)
VALUES ('Harold', 'Kumar', '2010-07-07 14:03:54', '3 Blue Ln, Perth', 0812391245, NULL)
SELECT #ReferToID = SCOPE_IDENTITY() ; -- catch the newly given IDENTITY ID
INSERT INTO dbo.Customer(first_name, surname, dob, home_address, contact_number, referrer_id)
VALUES ('Hank', 'Green', '2010-07-07 16:04:24', '444 Orange Crs, Perth', 0898412429, #ReferToID)
I don't know which row you want to refer to (you didn't specify) - but I hope you understand the mechanism:
insert the new row into your table
get the newly inserted ID by using SCOPE_IDENTITY
insert the next row which refers to that first row and use that value returned by SCOPE_IDENTITY
Update: if you really want to have a given row reference itself (strange concept.....), then you'd need to do it in two steps:
insert the new row into your table
get the newly inserted ID by using SCOPE_IDENTITY
update that row to set the referrer_id
Something like this:
DECLARE #NewCustomerID INT
INSERT INTO dbo.Customer(first_name, surname, dob, home_address, contact_number)
VALUES ('Hank', 'Green', '2010-07-07 16:04:24', '444 Orange Crs, Perth', 0898412429)
SELECT #NewCustomerID = SCOPE_IDENTITY() ; -- catch the newly given IDENTITY ID
UPDATE dbo.Customer
SET referrer_id = #NewCustomerID
WHERE customer_id = #NewCustomerID
The only problem you have here is the identity must have a seed value which can be like Identity(1,1) where the first 1 is the starting point and the send 1 is the auto seed number...the re run your insert statement
I have a Stored procedure, in which I have to insert 3 strings into 3 different Tables at a time, each string into each of the 3 tables.
In each table, a unique primary key (rowid) would be generated on insertion of the value.
Now, the Primary Key of first two tables is the Foreign key of the Third Table which as you all know, should not be null.
Here in my SP, insertion of value and generation of RowID (PrimaryKey) is done successfully.
Now I have to pass the two primary keys(Rowids) as values/Parameters(foreignkeys) into the third table, which is returning null.
Here is my SP:-
(1st Table)
INSERT INTO [kk_admin].[FA_Master](FA_Name,FA_CSession,FA_MSession) Values
(#FA_Name,#Session_Id,#Session_Id)
SELECT #**FA_ID=FA_ID** FROM [kk_admin].[FA_Master] where FA_Name=#FA_Name
(2nd Table)
INSERT INTO [kk_admin].[Dept_Master](Dept_Name,Dept_CSession,Dept_MSession) Values
(#Dept_Name,#Session_Id,#Session_Id)
SELECT #**Dept_id=Dept_id** from [kk_admin].[Dept_Master] where Dept_Name=#Dept_Name
(3rd Table)
INSERT INTO [kk_admin].[Category_Master] (**FA_Id**,**Dept_Id**,Category_Name,Category_CSession,Category_MSession) Values (#**FA_ID**,#**Dept_Id**,#Category_Name,#Session_Id,#Session_Id)
Hope everyone understood what I have explained.
Plz Help me,
Iam running out of time.
Plz help me.
Thank You in Advance,
Brightsy
You can use an OUTPUT clause (assuming you're using SQL Server 2005) to capture the primary key for the two rows you're inserting with the first two queries. You can capture the values into a temporary table. [I previously wrote that you could use a regular variable, but that's not supported.] Example code:
CREATE TABLE #FA_Master_ID ( ID int );
CREATE TABLE #Dept_Master_ID ( ID int );
INSERT kk_admin.FA_Master ( FA_Name, FA_CSession, FA_MSession )
OUTPUT INSERTED.ID INTO #FA_Master_ID
VALUES ( #FA_Name, #Session_Id, #Session_Id );
INSERT kk_admin.Dept_Master ( Dept_Name, Dept_CSession, Dept_MSession )
OUTPUT INSERTED.ID INTO #Dept_Master_ID
VALUES ( #Dept_Name, #Session_Id, #Session_Id );
INSERT kk_admin.Category_Master ( **FA_Id**, **Dept_Id**, Category_Name, Category_CSession, Category_MSession )
SELECT **FA_Id** = ( SELECT TOP 1 ID FROM #FA_Master_ID ),
**Dept_Id** = ( SELECT TOP 1 ID FROM #Dept_Master_ID ),
Category_Name = #Category_Name,
Category_CSession = #Session_Id,
Category_MSession = #Session_Id;