?
Solved

Need update TSQL with two tables

Posted on 2016-10-28
3
Medium Priority
?
39 Views
Last Modified: 2016-10-28
Hi

I have two tables, identical structures

CREATE TABLE [dbo].[TempA](
      [RPN] [int] NULL,
      [LanID] [nvarchar](50) NULL
) ON [PRIMARY]

CREATE TABLE [dbo].[TempB](
      [RPN] [int] NOT NULL,
      [LanID] [nvarchar](50) NULL
) ON [PRIMARY]

In TableA  LanID  is blank
In TableB Every LanID has a value


I need an TSQL UPDATE that will update the value of TableA.LanID  from TableB.LanID only when the RPN is equal in both

Thank You
0
Comment
Question by:Charles Baldo
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 13

Accepted Solution

by:
Dustin Saunders earned 2000 total points
ID: 41864243
Something like this would work:
UPDATE tablea
SET tablea.lanid = tableb.lanid
from tablea
inner join tableb
ON tableb.rpn = tablea.rpn

Open in new window

0
 
LVL 20

Expert Comment

by:Daniel Van Der Werken
ID: 41864260
Essentially the same as Dustin Saunders said, but with table aliases, which I like a lot.

UPDATE A
SET A.lanid = B.lanid
FROM tablea A
INNER JOIN tableb B
   ON B.rpn = A.rpn

Open in new window

1
 

Author Closing Comment

by:Charles Baldo
ID: 41864263
That worked, thanks
0

Featured Post

Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Ever needed a SQL 2008 Database replicated/mirrored/log shipped on another server but you can't take the downtime inflicted by initial snapshot or disconnect while T-logs are restored or mirror applied? You can use SQL Server Initialize from Backup…
In this article we will learn how to fix  “Cannot install SQL Server 2014 Service Pack 2: Unable to install windows installer msi file” error ?
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
Via a live example, show how to extract insert data into a SQL Server database table using the Import/Export option and Bulk Insert.
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question