Question

I am working on a project where I need to extract the data from excel sheet to SQL Server
, well that bit have done successfully. Now my problem is that for a particular column
called product size, I want to update current table based on product size in other table, I am really very confused , please help me out

Please find the table structure

    CREATE TABLE [dbo].[T_Product](
[ProductID] [int] IDENTITY(1,1) NOT NULL,
[PartNo] [nvarchar](255) NULL,
[CategoryID] [int] NULL,
[MaterialID] [float] NULL,
[WireformID] [float] NULL,
[ProductName] [nvarchar](50) NULL,
[ProductSize] [nvarchar](50) NULL,
[ProductLength] [varchar](20) NULL,
[ProductActive] [bit] NULL,
[ProductImage] [varchar](60) NULL
 ) ON [PRIMARY]

     CREATE TABLE [dbo].[T_ProductSize](
[Code] [int] IDENTITY(1,1) NOT NULL,
[ProductSize] [nvarchar](50) NULL,
[Length] [nchar](20) NULL
 ) ON [PRIMARY]

 GO

Answer 1

OK, so ignore the previous answer, I got the wrong end of the stick!!

You want something like this I think:

UPDATE T_Product
SET [ProductLength] = ps.[Length]
FROM T_Product p
INNER JOIN T_ProductSize ps
ON p.[ProductSize] = ps.[ProductSize]

That will take the Length value from T_ProductSize and place it in T_Product.ProductLength based on the value of T_Product.ProductSize