I have searched, and perhaps I am not asking the question correctly.
I have inherited a nasty database and am trying to "normalize" it.
I have broken one table into two: Owners and Buildings
And now I have two One to One tables.
I know how to deleted duplicate records (in the Owners table) but I do not know how to then update the "one to many" related table.
I have one table "Owners" and one table "Owners(one) to Buildings(many)"
"Owners" Table schema:
CREATE TABLE
[dbo].[tbl_BuildingOwners]
(
[OwnerID] [int] IDENTITY(1,1) NOT NULL,
[OwnerName] [nvarchar](255) NULL,
[OwnerAddress1] [nvarchar](255) NULL,
[OwnerAddress2] [nvarchar](255) NULL,
[OwnerAddress3] [nvarchar](255) NULL,
[OwnerCity] [nvarchar](255) NULL,
[OwnerState] [nvarchar](255) NULL,
[OwnerZip] [float] NULL,
[OwnerZipExt] [float] NULL,
[OwnerPhone] [nvarchar](255) NULL,
[OwnerFax] [nvarchar](255) NULL
)
"Owners(one) to Buildings(many)" Relational Table schema:
CREATE TABLE
[dbo].[BuildingOwnerID]
(
[OwnerRelationshipID] [int] IDENTITY(1,1) NOT NULL,
[OwnerID] [int] NOT NULL,
[FileNumber] [nvarchar](255) NOT NULL
)
I need to delete the duplicates in the BuildingOwners table and update the OwnerID in the BuildingOwnerID table to the DISTINCT OwnerID that is left in the BuildingOwners table.
I hope this made sense.
I have already tried this but could not make it work for me. Lastly, I can use either SQL sever or MS Access which ever is easier.
To remove duplicate you can use below query (sample query to remove duplicate state entries [duplicate by Country and State])....
WITH dupDel
AS ( SELECT ROW_NUMBER() OVER ( PARTITION BY country, STATE ORDER BY country ) AS RowNum
FROM tblTest
)
DELETE FROM dupDel
WHERE RowNum > 1
Related
I have system versioned Customer table and need to track if admin user deleted the row ('Tesla') from the table.
CustomerHistory table do get new row for 'Tesla', but it does not explicitly tell if row has been updated or deleted.
I would need advice to create SELECT/INSERT SQL query, which compared Customers and CustomerHistory to check which row has been deleted and insert the row ('Tesla') to CustomersDeleted table.
I have System versioned table:
CREATE TABLE [sales].[Customers](
[Customer_PK] [int] IDENTITY(1,1) NOT NULL,
[Customer_Id] [smallint] NULL,
[Customer_Name] [nvarchar](150) NULL,
) ON [PRIMARY]
GO
It has value '1','100','Tesla' and '2','200','Ford'.
Admin user will deleted 'Tesla' row.
I have History versioned table:
CREATE TABLE [sales].[CustomersHistory](
[Customer_PK] [int] NOT NULL,
[Customer_Id] [smallint] NULL,
[Customer_Name] [nvarchar](150) NULL,
) ON [PRIMARY]
GO
I have third table where I would like to insert rows ('Tesla') that has been removed from Customer table.
CREATE TABLE [sales].[CustomersDeleted](
[Customer_PK] [int] NOT NULL,
[Customer_Id] [smallint] NULL,
[Customer_Name] [nvarchar](150) NULL,
[Deleted_time] [datetime2](7) NULL
) ON [PRIMARY]
GO
I have a table:
CREATE TABLE [dbo].[CollectionSite]
(
[SiteCode] [nvarchar](32) NOT NULL,
[AddressId] [int] NOT NULL,
[RemittanceId] [int] NULL,
// additional columns
)
and a linked table:
CREATE TABLE [dbo].[CollectionSiteAddress]
(
[Id] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](255) NULL,
[Address1] [nvarchar](255) NULL,
[Address2] [nvarchar](255) NULL,
[City] [nvarchar](128) NULL,
[State] [nvarchar](64) NULL,
[Zip] [nvarchar](32) NULL,
)
Relationship between these 2 tables:
ALTER TABLE [dbo].[CollectionSite] WITH CHECK
ADD CONSTRAINT [FK_CollectionSite_CollectionSiteAddress_AddressId]
FOREIGN KEY([AddressId]) REFERENCES [dbo].[CollectionSiteAddress] ([Id])
GO
ALTER TABLE [dbo].[CollectionSite] WITH CHECK
ADD CONSTRAINT [FK_CollectionSite_CollectionSiteAddress_RemittanceId]
FOREIGN KEY([RemittanceId]) REFERENCES [dbo].[CollectionSiteAddress] ([Id])
GO
I want to select all records from CollectionSiteAddress, which are not linked to CollectionSite (neither AddressId nor RemittanceId). Which request should I use?
I tried:
SELECT *
FROM CollectionSiteAddress
LEFT JOIN CollectionSite ON CollectionSiteAddress.Id = CollectionSite.AddressId
OR CollectionSiteAddress.Id = CollectionSite.RemittanceId
but it selects all records from CollectionSiteAddress
You are missing this WHERE clause:
WHERE CollectionSite.[SiteCode] IS NULL
because you want all the unmatched rows of CollectionSiteAddress.
I used the column [SiteCode] to check if it is NULL because it is not nullable in the definition of the table.
So you can write your query like this (shortened with aliases):
SELECT csa.*
FROM CollectionSiteAddress csa LEFT JOIN CollectionSite cs
ON csa.Id = cs.AddressId OR csa.Id = cs.RemittanceId
WHERE cs.[SiteCode] IS NULL
Or use NOT EXISTS:
SELECT csa.*
FROM CollectionSiteAddress csa
WHERE NOT EXISTS (
SELECT 1
FROM CollectionSite cs
WHERE csa.Id = cs.AddressId OR csa.Id = cs.RemittanceId
)
Had a quick browse to see if any previous questions related to my issue, couldn't see any.
Basically I'm doing this database for my online Cert IV course and if I weren't completely stuck (as I have been for the past few months) I wouldn't be asking for major help on this
I've got an Antiques database that is supposed to show the Customer Name, Sales Date, Product Name and Sales Price and only list the items that were sold between 2 dates and order them by said dates. Nothing I do results in not having repeat data
I've got 4 tables for this particular query Customers, Sales and Products, Tables are set up like this:
CREATE TABLE [dbo].[Customers](
[CustID] [int] IDENTITY(1,1) NOT NULL,
[firstName] [varchar](50) NOT NULL,
[lastName] [varchar](50) NOT NULL,
CONSTRAINT [PK_Customers] PRIMARY KEY CLUSTERED
CREATE TABLE [dbo].[Sales](
[SalesNo] [int] IDENTITY(1,1) NOT NULL,
[CustID] [int] NOT NULL,
[salesDate] [date] NOT NULL,
CONSTRAINT [PK_Sales] PRIMARY KEY CLUSTERED
CREATE TABLE [dbo].[Products](
[ProductID] [int] IDENTITY(1,1) NOT NULL,
[prodName] [varchar](50) NOT NULL,
[prodYear] [int] NOT NULL,
[prodType] [varchar](50) NOT NULL,
[salesPrice] [money] NOT NULL,
CONSTRAINT [PK_Products] PRIMARY KEY CLUSTERED
CREATE TABLE [dbo].[ProductSales](
[ProductID] [int] NOT NULL,
[SalesNo] [int] NOT NULL
My query looks like this
SELECT (Customers.firstName + ' ' + Customers.lastName) AS Customers_Name,
Sales.salesDate, Products.prodName, Sales.salesPrice
FROM Customers, ProductSales JOIN Products ON ProductSales.ProductID = Products.ProductID
JOIN Sales ON ProductSales.SalesNo = Sales.SalesNo
WHERE Sales.salesDate BETWEEN '2016-06-03' AND '2016-06-06'
ORDER BY Sales.salesDate
This is what shows up when I run this query:
Any help would be appreciated.
Try below - you need to join customer table properly
SELECT (Customers.firstName + ' ' + Customers.lastName) AS Customers_Name,
Sales.salesDate, Products.prodName, Sales.salesPrice
FROM ProductSales JOIN Products ON ProductSales.ProductID = Products.ProductID
JOIN Sales ON ProductSales.SalesNo = Sales.SalesNo
JOIN Customers on Sales.[CustID]=Customers.[CustID]
WHERE Sales.salesDate BETWEEN '2016-06-03' AND '2016-06-06'
ORDER BY Sales.salesDate
I have on User_Table
CREATE TABLE [dbo].[User_TB]
(
[User_Id] [varchar](15) NOT NULL,
[User_FullName] [varchar](50) NULL,
[User_Address] [varchar](150) NULL,
[User_Gender] [varchar](10) NULL,
[User_Joindate] [varchar](50) NULL,
[User_Email] [varchar](50) NULL,
[User_Branch] [varchar](50) NULL,
[User_TeamLeader] [varchar](50) NULL,
[User_Department] [varchar](50) NULL,
[User_Position] [varchar](50) NULL,
[TID] [int] NULL
)
Break_Table
CREATE TABLE [dbo].[Break_TB]
(
[Break_Id] [int] IDENTITY(1,1) NOT NULL,
[User_Id] [varchar](15) NOT NULL,
[Date] [date] NULL,
[Break_Time] [int] NULL,
[Status] [varchar](50) NULL,
[Late_time] [int] NULL,
[TL_Id] [varchar](15) NULL,
[start_Time] [time](7) NULL,
[end_Time] [time](7) NULL,
)
Log_Table
CREATE TABLE [dbo].[Log_TB]
(
[User_Id] [varchar](50) NOT NULL,
[First_Login] [time](0) NULL,
[Logout] [time](0) NULL,
[Date] [date] NULL,
[Working_Hrs] [time](0) NULL,
)
Now what am trying to do is that whenever the User_Id from User_Table is Updated , I want trying to update User_Id of Another two tables,
I have written trigger for that
Alter TRIGGER [dbo].[updateUserId] on [dbo].[User_TB]
FOR Update
AS
declare #Branch_Name varchar(50),
#User_Id varchar(15)
select #User_Id = i.User_Id from inserted i;
Update Break_TB set User_Id = #User_Id where User_Id = #User_Id;
Update Log_TB set User_Id = #User_Id where User_Id = #User_Id;
But
It only updates records from Break_TB, It not works for Log_TB
Am not very good at triggers, if am wrong please Help me.
You would need something like this - a set-based solution that takes into account that in an UPDATE statement, you might be updating multiple rows at once, and therefore your trigger also must deal with multiple rows in the Inserted and Deleted tables.
CREATE TRIGGER [dbo].[updateUserId]
ON [dbo].[User_TB]
FOR UPDATE
AS
-- update the "Break" table - find the rows based on the *old* User_Id
-- from the "Deleted" pseudo table, and set it to the *new* User_Id
-- from the "Inserted" pseudo table
SET User_Id = i.User_Id
FROM Inserted i
INNER JOIN Deleted d ON i.TID = d.TID
WHERE
Break_TB.User_Id = d.User_Id
-- update the "Log" table - find the rows based on the *old* User_Id
-- from the "Deleted" pseudo table, and set it to the *new* User_Id
-- from the "Inserted" pseudo table
UPDATE Break_TB
SET User_Id = i.User_Id
FROM Inserted i
INNER JOIN Deleted d ON i.TID = d.TID
WHERE
Break_TB.User_Id = d.User_Id
This code assumes that the TID column in the User_TB table is the primary key which remains the same during updates (so that I can join together the "old" values from the Deleted pseudo table with the "new" values after the update, stored in the Inserted pseudo table)
Is there any difference in how I edit the GROUP BY command?
my code:
SELECT Number, Id
FROM Table
WHERE(....)
GROUP BY Id, Number
is it faster if i edit it like this:
SELECT Number, Id
FROM Table
WHERE(....)
GROUP BY Number , Id
it's better to use DISTINCT if you don't want to aggregate data. Otherwise, there is no difference between the two queries you provided, it'll produce the same query plan
This examples are equal.
DDL:
CREATE TABLE dbo.[WorkOut]
(
[WorkOutID] [bigint] IDENTITY(1,1) NOT NULL PRIMARY KEY,
[TimeSheetDate] [datetime] NOT NULL,
[DateOut] [datetime] NOT NULL,
[EmployeeID] [int] NOT NULL,
[IsMainWorkPlace] [bit] NOT NULL,
[DepartmentUID] [uniqueidentifier] NOT NULL,
[WorkPlaceUID] [uniqueidentifier] NULL,
[TeamUID] [uniqueidentifier] NULL,
[WorkShiftCD] [nvarchar](10) NULL,
[WorkHours] [real] NULL,
[AbsenceCode] [varchar](25) NULL,
[PaymentType] [char](2) NULL,
[CategoryID] [int] NULL
)
Query:
SELECT wo.WorkOutID, wo.TimeSheetDate
FROM dbo.WorkOut wo
GROUP BY wo.WorkOutID, wo.TimeSheetDate
SELECT DISTINCT wo.WorkOutID, wo.TimeSheetDate
FROM dbo.WorkOut wo
SELECT wo.DateOut, wo.EmployeeID
FROM dbo.WorkOut wo
GROUP BY wo.DateOut, wo.EmployeeID
SELECT DISTINCT wo.DateOut, wo.EmployeeID
FROM dbo.WorkOut wo
Execution plan: