Improve company productivity with a Business Account.Sign Up

x
?
Solved

OVERWRITE RECORDS ON TABLE FROM ANOTHER TABLE

Posted on 2008-10-13
3
Medium Priority
?
936 Views
Last Modified: 2012-05-05
I need to replace a number of records from database1.table to database2.table , I dont want to copy them from table to table because I dont want duplicates, I want to replace records.

The ideas is restore information from a backup database to the current database, what would be the best way to write the query?
0
Comment
Question by:gabepcsolutions
  • 2
3 Comments
 
LVL 61

Expert Comment

by:Kevin Cross
ID: 22708538
Something like this should be what you want.  Replacing the column and table names as appropriate.  ID was used to represent the link between the tables to establish same records.  If there are more fields involved in the link just add to the ON statement and add WHERE clause as needed.

If you only want to update from t1 if a valid value is there, you can use:

t2.colname = isnull(t1.colname, t2.colname)

This will leave value as is if column is null in table1.
UPDATE t2
SET t2.col1 = t1.col1
, t2.col2 = t1.col2
, t2.col3 = t1.col3
, t2.col4 = t1.col4
, t2.col5 = t1.col5
FROM Database2.dbo.Table t2 
INNER JOIN Database1.dbo.Table t1
ON t2.ID = t1.ID

Open in new window

0
 

Author Comment

by:gabepcsolutions
ID: 22717098
Actually, what I need is to select all records on CLIENT LIST table that match a CODEID and replace the entire record.

For example, I did this in the past to replace the entire table.

SELECT *
INTO [PIProDev].[dbo].[CLIENT LIST]
FROM [PIPro].[dbo].[CLIENT LIST]
0
 
LVL 61

Accepted Solution

by:
Kevin Cross earned 2000 total points
ID: 22720864
You can insert NEW records like this:

INSERT INTO PIProDev.dbo.[Client List]
SELECT * FROM PIPro.dbo.[Client List]
WHERE /* some condition is met */

However, keeps sounding like to me you have an EXISTING record and want to update.  You will either have to do what I suggested and hand write out each column value to replace.  Or alternatively, you will have to use the criteria to find and delete those records from the PIProDev version of table and use INSERT INTO statement above as if these were new records.

Hope that helps and I apologize for and in advance as I am out of pocket a bit this week and so my responses may be a bit delayed.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This month, Experts Exchange sat down with resident SQL expert, Jim Horn, for an in-depth look into the makings of a successful career in SQL.
Sometimes MS breaks things just for fun... In Access 2003, only the maximum allowable SQL string length could cause problems as you built a recordset. Now, when using string data in a WHERE clause, the 'identifier' maximum is 128 characters. So, …
With just a little bit of  SQL and VBA, many doors open to cool things like synchronize a list box to display data relevant to other information on a form.  If you have never written code or looked at an SQL statement before, no problem! ...  give i…
Watch the working video to know how to import Outlook PST/OST files to Amazon WorkMail. Kernel released this tool which is very easy to use and migrate single or multiple PST and OST files to Amazon WorkMail. To know more about Kernel Import PST to …

606 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