Solved

Help with select from other table

Posted on 2013-12-11
6
395 Views
Last Modified: 2013-12-11
I need to insert info into a table from another table but I need the info to be filtered from the current table:

here is my example:

Table 1 (Employees)
----------
ID       first_name   last_name
---       ---------------   --------------
1          John              Smith
2          Jane               Doe
3         Johnny           Walker
4         Bruce             Wayne

Table 2 (Details)

ID      Title         Supervisor_ID
----     -------         -------------------
2         Clerk                 1
3         Puchaser          1
4         President         4


I want to make a  temp table  or select that gives me:


ID      first_name       last_name       Supervisor_Name
----     -------------          --------------       ------------------------


Thanks,


Lyo
0
Comment
Question by:tenchulyo
[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
  • 2
6 Comments
 
LVL 8

Expert Comment

by:virtuadept
ID: 39711636
You are going to do

SELECT t1.ID, t1.first_name, t1.last_name,
   ts.first_name+" "+ts.last_name as Supervisor_Name
FROM table1 as t1
INNER JOIN table2 as t2
ON t1.id = t2.id
INNER JOIN table1 as ts
ON t2.supervisor_id = ts.id
0
 
LVL 11

Accepted Solution

by:
Simone B earned 250 total points
ID: 39711637
This should give you what you're looking for.

SELECT Emp.ID, Emp.first_name, Emp.last_name, Sup.first_name + ' ' + Sup.last_name
FROM Table1 Emp
INNER JOIN Table2 ON Emp.ID = Table2.ID
LEFT OUTER JOIN Table1 Sup ON Table2.Supervisor_ID = Sup.ID

Open in new window

0
 
LVL 11

Expert Comment

by:Simone B
ID: 39711641
I used a LEFT JOIN to the supervisor table, so that you will still see John Smith in the results, but the Supervisor's Name for him will be NULL.
0
Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

 
LVL 8

Expert Comment

by:virtuadept
ID: 39711659
Good point Buttercup1. You could also use this:

SELECT DISTINCT t1.ID, t1.first_name, t1.last_name, 
   ISNULL(ts.first_name+' '+ts.last_name,t1.first_name+' '+t1.last_name) as Supervisor_Name
FROM table1 as t1
LEFT OUTER JOIN table2 as t2
ON t1.id = t2.id
LEFT OUTER JOIN table1 as ts
ON t2.supervisor_id = ts.id

Open in new window


if you want to have their own name instead of  Null on Supervisor name for employees that do not have a supervisor.
0
 

Author Comment

by:tenchulyo
ID: 39711845
Left outer join!! Exactly what I was looking for!! Thanks!!
0
 
LVL 11

Expert Comment

by:Simone B
ID: 39711857
You're welcome!
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

If you find yourself in this situation “I have used SELECT DISTINCT but I’m getting duplicates” then I'm sorry to say you are using the wrong SQL technique as it only does one thing which is: produces whole rows that are unique. If the results you a…
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

688 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