Solved

Selection from table2 where criteria for table1

Posted on 2016-11-07
10
66 Views
Last Modified: 2016-11-07
Hello,

I need to select all refno in table2 where column1 from table1 ='yes'



table1:
Ref --Column1
Auth --Column2

table2:
Ref --Column1
Auth --Column2


Select * from table2 where table1 . auth ='yes'

Any suggestions?

Cheers
0
Comment
Question by:RIAS
[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
  • 5
  • 3
  • 2
10 Comments
 
LVL 28

Expert Comment

by:Pawan Kumar
ID: 41876755
Try this.. I have used left join , you can define that based on your requirement.

SELECT * FROM 
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
WHERE a.Column1 = 'Yes'

Open in new window


or

SELECT * FROM 
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
AND a.Column1 = 'Yes'

Open in new window

0
 
LVL 52

Expert Comment

by:Ryan Chong
ID: 41876760
I would prefer to use inner join like this way:
select b.Ref
from table2 b
inner join table1 a 
on b.Ref = a.Ref
where a.Auth = 'Yes'
group by b.Ref

Open in new window

0
 

Author Comment

by:RIAS
ID: 41876764
Ryan your query did not return any value
0
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

 

Author Comment

by:RIAS
ID: 41876766
Pawan,
is there any way I can find distinct values from table2 based on the selection.
0
 
LVL 52

Expert Comment

by:Ryan Chong
ID: 41876768
@RIAS,

pls provide sample data so we can provide proper solution
0
 

Author Comment

by:RIAS
ID: 41876770
Pawan's query worked!
0
 
LVL 28

Expert Comment

by:Pawan Kumar
ID: 41876771
Use Distinct... Here you can use * for all columns or column name like ref..

Select DISTINCT  *  FROM  
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
WHERE a.Column1 = 'Yes'

Select DISTINCT Ref  FROM  
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
WHERE a.Column1 = 'Yes'

OR

SELECT DISTINCT * FROM
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
AND a.Column1 = 'Yes'
0
 

Author Comment

by:RIAS
ID: 41876774
Select DISTINCt Ref  FROM  
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
WHERE a.Column1 = 'Yes'

errors as it does not know which table it belongs to
0
 
LVL 28

Accepted Solution

by:
Pawan Kumar earned 500 total points
ID: 41876775
Use alias..

Select DISTINCt b.Ref  FROM  
table2 b LEFT JOIN table1 a ON a.Column1 = b.Column1
WHERE a.Column1 = 'Yes'
0
 

Author Closing Comment

by:RIAS
ID: 41876776
Thanks Pawan!
Thanks Ryan as well!
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

In SQL Server, when rows are selected from a table, does it retrieve data in the order in which it is inserted?  Many believe this is the case. Let us try to examine for ourselves with an example. To get started, use the following script, wh…
In this article I will describe the Copy Database Wizard method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

738 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