Solved

Add contents of one table's column to another table

Posted on 2007-03-26
4
251 Views
Last Modified: 2010-03-20
Sorry, I'm a real newbie to SQL. I have two tables with the same columns and would like to do the following:

Add the contents of Table2.ColumnX to Table1.ColumnX where Table1.pkID = Table2.pkID (all the rows are the same in both tables except for the values of ColumnX)

Thanks in advance for any help!
0
Comment
Question by:siono3
  • 3
4 Comments
 
LVL 61

Expert Comment

by:mbizup
ID: 18796591
Try this:

SELECT Table2.ColumnX + Table1.ColumnX  as YourSum
FROM  Table1 Inner Join Table2 ON Table1.pkID = Table2.pkID
0
 
LVL 61

Expert Comment

by:mbizup
ID: 18796599
If you actually need to update Table1's data, not just a select query, make a backup and try this:

Update Table1 Inner Join Table2 ON Table1.pkID = Table2.pkID
SET  Table2.ColumnX  = Table2.ColumnX + Table1.ColumnX  
0
 
LVL 61

Accepted Solution

by:
mbizup earned 250 total points
ID: 18796611
Correction... The update query I posted before will update table2's data.  This will update table1:

Update Table1 Inner Join Table2 ON Table1.pkID = Table2.pkID
SET  Table1.ColumnX  = Table2.ColumnX + Table1.ColumnX  
0
 

Author Comment

by:siono3
ID: 18799320
Thanks mbizup,

That almost worked. For some reason I had to tweak it a little bit and ended up with the following:
UPDATE    Table1
SET              Table1.ColumnX = Table2.ColumnX
FROM         Table1 INNER JOIN
                      Table2 ON Table1.pkID = Table2.pkID

but you set me on the right track...
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
How to find the last word in a string in SQLITE 14 70
Fixed Length SQL Query Question 3 28
sql query Help 12 53
SELECT * FROM table WHERE keyword…  (3 SQL queries needed) 10 84
In database programming, custom sort order seems to be necessary quite often, at least in my experience and time here at EE. Within the realm of custom sorting is the sorting of numbers and text independently (i.e., treating the numbers as number…
'Between' is such a common word we rarely think about it but in SQL it has a very specific definition we should be aware of. While most database vendors will have their own unique phrases to describe it (see references at end) the concept in common …
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

895 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now