[Webinar] Streamline your web hosting managementRegister Today

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 168
  • Last Modified:

Pulling Information into one table from another.

I have been banging my head in frustration over this novice issue.  I'm trying to update a column on table1 with information from table2 where two different variables match.... I'm better at drawing than I am describing this stuff, so, here we go.

Table1
Table1 pic
Table2
Table2 pic
Again, I'm trying to update the key1 column in Table1 based off of matching the cat and filename columns from Table1 to the ocat and key3 columns in Table2.
0
Jonathan CMCH
Asked:
Jonathan CMCH
  • 5
  • 4
1 Solution
 
Jared_SCommented:
Try this:

update table1
set table1.key1 = table2.okey1
from table1 inner join table2
on table1.cat = table2.ocat and table1.filename = table2.okey3
0
 
Jonathan CMCHAuthor Commented:
Thanks Jared.

I don't think that it likes the 'from' syntax in there as I am getting an error.  I think you have me on the right track though with the inner join command.  I've attempted:

update table1
inner join table2
on table1.cat = table2.ocat
set table1.key1 = table2.okey1
where table1.filename = table2.okey3

but this is not pulling over any information from the table2.okey1 column.
0
 
Jared_SCommented:
I gave you the wrong flavor of sql.. sorry. This should work.

UPDATE table1, table2
  SET set table1.key1 = table2.okey1
 WHERE  table1.filename = table2.okey3
  AND table1.cat = table2.ocat
0
The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

 
Jonathan CMCHAuthor Commented:
Thanks again.

That's actually the first query I tried to run.  Unfortunately, it's still not pulling any information from the table2.okey1 column.  I'm still unsure why.
0
 
Jared_SCommented:
Any error messages?
0
 
Jonathan CMCHAuthor Commented:
No, the query runs.  It's just not pulling the information from the column.  0 rows are being edited, is what is reported.  I probably need to triple check to make sure those columns are comparable, but I'm pretty sure they are.
0
 
Jared_SCommented:
If that doesn't fix it, maybe try running it as a select and confirm that the are rows that should be updated with the join criteria used.
0
 
Jonathan CMCHAuthor Commented:
Whelp, I found out what the issue was.  When I imported the csv file with the information into the database, it created a new line after the data in the last column of the table.  Therefore, even though the data looked the same in the two columns, when compared, they didn't match.  I corrected that new line issues and, voila... My 3 day migraine is gone.

Thanks for the help!
0
 
Jonathan CMCHAuthor Commented:
Trial and error figured this one out....3 days of it.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 5
  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now