Skip to main content

Update table from another table in sql server

Here is the example to update table from another table where Empid is same and according some conditions.

We have to update 'tblEmpdetails' table
'Acno' as mention on second table 'tblEmpAcNo' with the condition that department must be 'Hr', Both table given bellow and updating query also given bellow.

Table 1 :- tblEmpDetails 
EmpId age Dep Acno
E1 20 IT 09876565
E2 30 Hr 75445678
E3 31 Hr 45674570
Table2 :- tblEmpAcNo
EmpId Acno
E1 02537565
E2 85245678
E3 41546456
E4 34074570
E5 45379200




UPDATE tblEmpDetails SET tblEmpDetails.AcNo = tblEmpAcNo.AcNo
FROM tblEmpAcNo
WHERE tblEmpDetails.EmpId = tblEmpAcNo.EmpId
AND tblEmpDetails.Dept = 'Hr'
GO


Popular posts from this blog

Merging multiple PDFs using iTextSharp in asp.net c#

In this article i will show you how to merge multiple pdfs into one using ITextSharp below is the two approach one is to pass your input files path, output file path (will be created if not exist) and another is pass direct input stream, output stream and it will write the merge files into output stream.

Uploading large file in chunks in Asp.net Mvc c# from Javascript ajax

Often we have a requirement to upload files in Asp.net, Mvc c# application but when it comes to uploading larger file, we always think how to do it as uploading large file in one go have many challenges like UI responsiveness, If network fluctuate for a moment in between then uploading task get breaks and user have to upload it again etc.

how $document.ready() is different from window.onload()

we often use window.onload() in javascript and $document.ready() in jquery and assume that both are same just jquery library wrap up javascript window.onload() and introduce $document.ready() but no there is much difference between them below is the explanation -

Scrollable Gridview with fixed headers in asp.net

horizontal and vertical scrollable Gridview with static header row.fixed header in gridview in asp.net.static header in gridview through java script.I was looking for a solution for this for a long time and found most of the answers are not working or not suitable for my situation i also find most of the java script code for that they worked but only with the vertical scroll not with the horizontal scroll and also combination of header and rows doesn't match.