I have 2 tables
Customer (CustomerID int, Name varchar(20), OrderHistory xml)
Order (OrderID int, CustomerID int, OrderDate date)
And I would like to insert into every row in OrderHistory column, an OrderDate of that Customer based on CustomerID.
Here is my query:
UPDATE Customer
SET OrderHistory = (SELECT OrderDate
FROM Order
WHERE CustomerID = 1
FOR XML AUTO)
WHERE CustomerID = 1
However, I have to change CustomerID for every new customer. Is there any way to insert into every customer at once ?
Applying UPDATE ... FROM ... construct to your initial SQL to make it update all customer data at once should be straightforward :
UPDATE Customer
SET OrderHistory =
(SELECT OrderDate
FROM Order o
WHERE o.CustomerID = c.CustomerID
FOR XML AUTO)
FROM Customer c
For Updating table via using Join another table use the next Approach:
UPDATE A
SET foo = B.bar
FROM TableA A
JOIN TableB B
ON A.col1 = B.colx
WHERE ...
So the update query will be as next:
UPDATE A
SET OrderHistory = B.OrderDate
FROM Customer A
JOIN Order B
ON A.CustomerID = B.CustomerID
I just figured out:
DECLARE
#count int
SET
#count = 0
UPDATE Customer
WHILE #count < (SELECT COUNT (*) FROM Customer)
BEGIN
SET OrderHistory = (SELECT
OrderDate
FROM
Order
WHERE CustomerID = #count
FOR XML AUTO)
WHERE CustomerID = #count
SET #count = #count + 1
END
Related
I have a table [Order] that has records with sequential ID (in odd number only, i.e. 1,3,5,7...989, 991, 993, 995, 997, 999), it is seen that a few records were accidentally deleted and should be inserted back, first thing is to find out what records are missing in the current table, there are hundreds of records in this table
Don't know how to write the query, can anyone kindly help, please?
I am thinking if I have to write a stored procedure or function but would be better if I can avoid them for environment reasons.
Below peuso code is what I am thinking:
set #MaxValue = Max(numberfield)
set #TestValue = 1
open cursor on recordset ordered by numberfield
foreach numberfield
while (numberfield != #testvalue) and (#testvalue < #MaxValue) then
Insert #testvalue into #temp table
set #testvalue = #textvalue + 2
Next
Next
UPDATE:
Expected result:
Order ID = 7 should be picked up as the only missing record.
Update 2:
If I use
WHERE
o.id IS NULL;
It returns nothing:
Since I didn't get a response from you, in the comments, I've altered the script for you to fill in accordingly:
declare #id int
declare #maxid int
set #id = 1
select #maxid = max([Your ID Column Name]) from [Your Table Name]
declare #IDseq table (id int)
while #id < #maxid --whatever you max is
begin
insert into #IDseq values(#id)
set #id = #id + 1
end
select
s.id
from #IDseq s
left join [Your Table Name] t on s.id = t.[Your ID Column Name]
where t.[Your ID Column Name] is null
Where you see [Your ID Column Name], replace everything with your column name and the same goes for [Your Table Name].
I'm sure this will give you the results you seek.
We can try joining to a number table, which contains all the odd numbers which you might expect to appear in your own table.
DECLARE #start int = 1
DECLARE #end int = 1000
WITH cte AS (
SELECT #start num
UNION ALL
SELECT num + 2 FROM cte WHERE num < #end
)
SELECT num
FROM cte t
LEFT JOIN [Order] o
ON t.num = o.numberfield
WHERE
o.numberfield IS NULL;
Here is the trigger
CREATE TRIGGER [dbo].[Teacher]
ON [dbo].[Teacher]
After INSERT
AS
Declare #fid int, #PR NVARCHAR(MAX),#Mycounter as INT
Select top 1 #fid = eid from human where TypeID = 2
order by NewID()
Select top 1 #PR = Pid from [dbo].[Program] Where Depid = 1
order by NewID()
Set #Mycounter =1
While #Mycounter <5
BEGIN
Insert Into HeadofDep(SessionID,fid,pid,name,createddate)
Select SessionID, #fid,#PR,NULL,null from INSERTED
Where eid in (Select eid from human where TypeID = 3)
set #MyCounter = #MyCounter + 1;
END
I need to insert 1000's of rows in HeadofDep table when any row is inserted in Teacher table. I have done by applying looping but all rows that get inserted in HeadofDep table have same #PR. Need it different against each row.
Also need sessionid incremented.
How can I achieve that?
Just, increment the SessionID then and put the other stuff in the loop:
Declare #fid int, #PR NVARCHAR(MAX),#Mycounter as INT
Set #Mycounter =1
While #Mycounter <5
BEGIN
Select top 1 #fid = eid from human where TypeID = 2
order by NewID()
Select top 1 #PR = Pid from [dbo].[Program] Where Depid = 1
order by NewID()
Insert Into HeadofDep(SessionID,fid,pid,name,createddate)
Select SessionID, #fid,#PR,NULL,null from INSERTED
Where eid in (Select eid from human where TypeID = 3)
set #MyCounter = #MyCounter + 1;
END
Also, doing such LOOPs in triggers is bad.In this case, you can change 1000 inserts with one like this:
Insert Into HeadofDep(SessionID,fid,pid,name,createddate)
Select SessionID + N, #fid,#PR,NULL,null
from INSERTED
CROSS APPLY
(
SELECT TOP (1000) -1+row_number() over(order by t1.number) as N
FROM master..spt_values t1
CROSS JOIN master..spt_values t2
) DS
Where eid in (Select eid from human where TypeID = 3)
I have three tables:
Employee
Id
FirstName
LastName
EmployeeTasksId
EmployeeTasks
Id
EmployeeId
EmployeeTaskDefinitionId
EmployeeTaskDefinitions
Id
Description
etc.
What I am trying to do is once an Employee is inserted into the Employees table, I need to insert rows into the EmployeeTasks table based on the inserted Employee's Id and every EmployeeTaskDefinition's Id.
For example:
Employee with Id 1 is inserted into Employee table
EmployeeTaskDefinitions table has 6 rows with Ids 1-6
EmployeeTasks table needs to have 6 rows after this insert:
Id = 1, EmployeeId = 1, EmployeeTaskDefinitonId = 1
Id = 2, EmployeeId = 1, EmployeeTaskDefinitonId = 2
Id = 3, EmployeeId = 1, EmployeeTaskDefinitonId = 3
Id = 4, EmployeeId = 1, EmployeeTaskDefinitonId = 4
Id = 5, EmployeeId = 1, EmployeeTaskDefinitonId = 5
Id = 6, EmployeeId = 1, EmployeeTaskDefinitonId = 6
Now I have read numerous posts about cursors, with most people saying that they're a bad practice to use for this task. But how would you do something like this? Note: I don't want to use anything else other than triggers.
EDIT: This is the query I came up with.
CREATE TRIGGER CreateEmployee
ON [dbo].[EmployeeSet]
AFTER INSERT
AS
DECLARE #LoopCounter int, #MaxSettingDefinitionId int, #Id int
SELECT #LoopCounter = MIN(Id), #MaxSettingDefinitionId = MAX(Id)
FROM SettingsDefinitionSet
WHILE(#LoopCounter IS NOT NULL AND #LoopCounter <= #MaxSettingDefinitionId)
BEGIN
SELECT #Id = Id FROM SettingDefinitionSet
WHERE Id = #LoopCounter
INSERT INTO SettingSet(CompanyId, EmployeeId, SettingDefinitionId, SettingType, State, Value)
VALUES((SELECT CompanyId FROM inserted), (SELECT Id FROM inserted),
#Id,
(SELECT SettingType FROM SettingSet WHERE EmployeeId IS NULL AND CompanyId = (SELECT CompanyId FROM inserted) AND SettingDefinitionId = #Id),
(SELECT State FROM SettingSet WHERE EmployeeId IS NULL AND CompanyId = (SELECT CompanyId FROM inserted) AND SettingDefinitionId = #Id),
(SELECT Value FROM SettingSet WHERE EmployeeId IS NULL AND CompanyId = (SELECT CompanyId FROM inserted) AND SettingDefinitionId = #Id))
SELECT #LoopCounter = MIN(Id) FROM SettingDefinitionSet
WHERE Id > #LoopCounter
END
GO
This should do the trick:
INSERT INTO EmployeeTasks(EmployeeId, EmployeeTaskDefinitionId)
SELECT inserted.id as EmployeeId, t.id as EmployeeTaskDefinitionId
FROM inserted JOIN EmployeeTaskDefinitions
As I noted in comments, Employee table is bad normalized and shouldn't have EmployeeTasksId. If you want to add automatically some tasks to a new employee do it like this:
alter table EmployeeTaskDefinitions
add DefaultTask bit not null default 0
--update EmployeeTaskDefinitions set DefaultTask = 1 where...
--now create a trigger
create trigger trEmployee_i
on dbo.Employee after insert
as
begin
set nocount on
insert EmployeeTasks(EmployeeId,EmployeeTaskDefinitionId)
select i.id,td.id
from inserted i cross join EmployeeTaskDefinitions td
where td.DefaultTask = 1
end
P.S.: I hope EmployeeTasks.Id is identity column.
I have the following table:
VehicleID Reg_ID Next_RegID EntryDate
330034 9111 NULL 2010-12-06 00:00:00
330034 9113 NULL 2010-12-09 00:00:00
On the first row I need to update the Next_RegId column with the Reg_ID of the second row where VehicleId or (VIN/ChassisNumber) is the same. The Next_RegID column on the last entry should remain Null.
I've created a while loop procedure which works perfectly, but with millions of records in the table it takes ages to complete. Therefore, I was wondering if any of you dealt with this kind of a problem and have a solution for it.
Here's the procedure I wrote, and thanks in advance for all your help:
Declare #i as integer;
Declare #x as integer;
Declare #y as integer
Set #i= (Select Max(RID) from TempRegistration)
Set #x= 0
Set #y= 1
Declare #curChassis as nvarchar(100)
Declare #nextChassis as nvarchar(100)
While (#x <= #i)
Begin
set #curChassis = (Select ChassisNumber from TempRegistration where RID = #x)
set #nextChassis = (Select ChassisNumber from TempRegistration where RID = #y)
If (#curChassis = #nextChassis)
Begin
Update Registration set NextRegistrationId = (Select RegistrationId from TempRegistration where RID = #y)
Where RegistrationId = (Select RegistrationId from TempRegistration where RID = #x)
End
Set #x = #x + 1
Set #y = #y + 1
Print(#x)
End
TempRegistration is a temporary table I've created to assign a row_id which guides the while loop to assign the Reg_ID to the Next_RegId on the previous row.
This can be done with one UPDATE query. You haven't mentioned your RDBMS so...
For MSSQL:
Update Registration as t1
set NextRegistrationId = (Select TOP 1 RegistrationId
from Registration
where RID = t1.RID
and EntryDate>t1.EntryDate
order by EntryDate DESC)
For MySQL
Update Registration as t1
set NextRegistrationId = (Select RegistrationId
from Registration
where RID = t1.RID
and EntryDate>t1.EntryDate
order by EntryDate DESC
LIMIT 1)
If RID's are increasing with EntryDate then
Update Registration as t1
set NextRegistrationId = (Select MIN(RegistrationId)
from Registration
where RID = t1.RID
and EntryDate>t1.EntryDate
)
Tested and it seems to be working but this version uses a CTE (SQL Server)
with RegDetails as
(
select VehicleID, Reg_ID, ROW_NUMBER() OVER(PARTITION BY VehicleID ORDER BY EntryDate) AS ROWNUMBER
FROM dbo.Vehicle)
UPDATE a SET a.Next_RegID = b.Reg_ID
FROM RegDetails b
INNER JOIN dbo.Vehicle a ON (a.VehicleID = b.VehicleID)
WHERE b.ROWNUMBER = 2 and a.Next_RegID IS NULL and a.Reg_ID != b.Reg_ID
I have a SQL Server database and I need to manually do an update query. There for no solutions using any programming language can be used.(stored procedures can be used)
I have 4 tables affected (/used) in the query.
[Orders]
[StatusHistoryForOrder]
[StatusHistory]
[Statuses]
I need to update the field [Orders].[OrderStatusID] which is a foreign key to [Statuses]. (So actually changing the state of the order. The table [StatusHistoryForOrder] is a linking table to [StatusHistory] and only contains 2 colums.
[StatusHistoryForOrder].[OrderId]
[StatusHistoryForOrder].[OrderStatusHistoryid]
Don't say that this is not logically cause I already know that. The company who designed the database is a complete retarded company but the database is now too large to set things straight and there is neither the time or money to do it.
The [StatusHistory] table has multiple columns:
[StatusHistory].[OrderStatusHistoryId]
[StatusHistory].[OrderStatusId]
[StatusHistory].[Date]
[StatusHistory].[Message]
The [StatusHistory].[OrderStatusId] is also a foreign key to [Statuses].
In the update query I need to update the status of the order to status 16. But only on rows that now have status 1 and are older then 60 days. I know I can check the date by using the function
DATEDIFF(DD,[StatusHistory].[Date],GETDATE()) > 60
But how to implement this query if the date field is not in the orders. And to set the new [StatusHistory] a new row has to be made for that table and the [StatusHistoryForOrder] table also needs a new row and the ID of that row needs to be set in the [Orders] table row.
Does anyone know how to do this? I am fairly new to SQL Server (or SQL for that matter) and I have absolutly no clue where to begin.
Conclusion:
I need a stored procedure that first checks every row in [Orders] if the [StatusHistory].[Date] (which is linked to the order using foreign keys) of that order is older that 60. If it is older then a new StatusHistory row must be inserted with the current date and status 16. Then in [StatusHistoryForOrder] a new row must be inserted with the new ID of the statusHistory been set in [StatusHistoryForOrder].[OrderStatusHistoryid] and the order id set in [StatusHistoryForOrder].[OrderId]. And last but not least: The [Orders].[OrderStatusID] also needs to be set to 16.
A select query to select the date and status of the order:
SELECT TOP (100) PERCENT
dbo.Orders.OrderID,
dbo.Statuses.Description AS Status,
dbo.StatusHistory.Date
FROM
dbo.Orders
INNER JOIN
dbo.Statuses
ON
dbo.Orders.OrderStatusID = dbo.Statuses.StatusId
INNER JOIN
dbo.StatusHistoryForOrder
ON
dbo.Orders.OrderID = dbo.StatusHistoryForOrder.OrderId
INNER JOIN
dbo.StatusHistory
ON
dbo.StatusHistoryForOrder.OrderStatusHistoryid = dbo.StatusHistory.OrderStatusHistoryId
WHERE
(dbo.Statuses.StatusId = 1)
AND
(DATEDIFF(DD, dbo.StatusHistory.Date, GETDATE()) > 60)
UPDATE
For #marc_s:
Can anyone help me with that?
Try this CTE (Common Table Expression) to find all those orders - does it work, are the results plausible? (this doesn't update anything just yet - just SELECTing for now):
USE (your database name here)
GO
DECLARE #OrdersToUpdate TABLE (OrderID INT, StatusHistoryID INT, StatusDate DATETIME)
;WITH RelevantOrders AS
(
SELECT
o.OrderId, sh.Date
FROM dbo.Orders o
INNER JOIN dbo.StatusHistoryForOrder ho ON ho.OrderId = o.OrderId
INNER JOIN dbo.StatusHistory sh ON ho.OrderStatusHistoryid = sh.OrderStatusHistoryid
WHERE
sh.Date <= DATEADD(D, -60, GETDATE()) -- older than 60 days back from today
AND o.OrderStatusID = 1 -- status = 1
)
INSERT INTO #OrdersToUpdate(OrderID, StatusDate)
SELECT OrderID, [Date]
FROM RelevantOrders
BEGIN TRANSACTION
BEGIN TRY
DECLARE #OrderIDToInsert INT, -- OrderID to process
#InsertedStatusHistoryID INT -- new ID of the inserted row in StatusHistory
-- grab the first OrderID that needs to be processed
SELECT TOP 1 #OrderIDToInsert = OrderID
FROM #OrdersToUpdate
WHERE StatusHistoryID IS NULL
ORDER BY OrderID
-- as long as there are still more OrderID to be processed ....
WHILE #OrderIDToInsert IS NOT NULL
BEGIN
PRINT 'Now inserting new StatusHistory entry for OrderID = ' + CAST(#OrderIDToInsert AS VARCHAR(10))
INSERT INTO dbo.StatusHistory(OrderStatusID, [Date], [Message])
VALUES(16, GETDATE(), 'Bulk Insert/Update operation') -- enter here whatever you want to store
SELECT #InsertedStatusHistoryID = SCOPE_IDENTITY(); -- grab newly inserted ID
PRINT 'New StatusHistory entry inserted with ID = ' + CAST(#InsertedStatusHistoryID AS VARCHAR(10))
UPDATE #OrdersToUpdate
SET StatusHistoryID = #InsertedStatusHistoryID
WHERE OrderID = #OrderIDToInsert
-- safety - reset #OrderIDToInsert to NULL so that we'll know when we're done
SET #OrderIDToInsert = NULL
-- read next OrderID to be processed
SELECT TOP 1 #OrderIDToInsert = OrderID
FROM #OrdersToUpdate
WHERE StatusHistoryID IS NULL
ORDER BY OrderID
END
-- insert into the StatusHistoryForOrder table
INSERT INTO dbo.StatusHistoryForOrder(OrderID, OrderStatusHistoryID)
SELECT OrderID, StatusHistoryID
FROM #OrdersToUpdate
-- update your Orders to status ID = 16
UPDATE dbo.Orders
SET OrderStatusID = 16
FROM #OrdersToUpdate upd
WHERE dbo.Orders.OrderID = upd.OrderID
COMMIT TRANSACTION
END TRY
BEGIN CATCH
SELECT
ERROR_NUMBER() AS ErrorNumber,
ERROR_SEVERITY() AS ErrorSeverity,
ERROR_STATE() AS ErrorState,
ERROR_PROCEDURE() AS ErrorProcedure,
ERROR_LINE() AS ErrorLine,
ERROR_MESSAGE() AS ErrorMessage
ROLLBACK TRANSACTION
END CATCH
This CTE basically joins your Orders table to the StatusHistory table (via the intermediate link table) and selects the values you're interested in (hopefully!).
This particular problem seems solvable with set operations only.
DECLARE #Orders TABLE (ID int, rownum int IDENTITY);
DECLARE #StatusHistory TABLE (ID int, rownum int IDENTITY);
/* get the list of orders with expired statuses */
INSERT INTO #Orders (ID)
SELECT o.OrderID
FROM Orders o
INNER JOIN StatusHistoryForOrder shfo ON o.OrderID = shfo.OrderId
INNER JOIN StatusHistory sh ON shfo.OrderStatusHistoryid = sh.OrderStatusHistoryId
GROUP BY o.OrderID
HAVING DATEDIFF(DD, MAX(sh.Date), GETDATE()) > 60
/* add so many new rows to StatusHistory and remember the new IDs */
INSERT INTO StatusHistory (OrderStatusId, Date, Message)
OUTPUT inserted.OrderStatusHistoryId INTO #StatusHistory (ID)
SELECT
16,
GETDATE(),
'Auto-inserted as the previous status has expired'
FROM #Orders
/* join the two temp lists together and add rows to StatusHistoryForOrder */
INSERT INTO StatusHistoryForOrder (OrderId, OrderStatusHistoryid)
SELECT o.ID, sh.ID
FROM #Orders o
INNER JOIN #StatusHistory sh ON o.rownum = sh.rownum
/* finally update the statuses in Orders */
UPDATE Orders
SET OrderStatusID = 16
FROM #Orders o
WHERE Orders.OrderID = o.ID
This should be the body of a single transaction, of course.