• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 252
  • Last Modified:

How to quiry from the same table 2 times

Hello,

i am trying to write a quiry that has 2 tables.

Table1:
Companies:
Company Name, Manager Name 1, Manager Name 2.
Exampe Data.
Company ABC, 1, 2
Company DEB, 2, 1

Table 2:
Managers:
Manger_ID, Manager_name
Example Data.
1, Alex
2, Peter
3, Stan

Need to create a quiry to Display manager names.

Thanks in advance,

Roman
0
dizel247
Asked:
dizel247
  • 2
  • 2
  • 2
  • +3
2 Solutions
 
Obadiah ChristopherCommented:
Is Manager 1 the same as Manager_Id
0
 
dizel247Author Commented:
Manager1 and Manger2 - to make it clear Person To manage Sales, Person to manage Purchasing

1 is Manager ID
2 is manager ID

So to answer your question YES Manger 1 is related to managers.manager_id

Thanks in advance,

Roman
0
 
Shanmuga SundaramDirector of Software EngineeringCommented:
Based on your input the query will be like as given below.

select * from Companies a, Managers b where a.[Manager Name 1]=b.Manger_ID
0
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

 
Shanmuga SundaramDirector of Software EngineeringCommented:
or as this.
select * from Companies , Managers  where companies.[Manager Name 1]=managers.Manger_ID
0
 
Patrick MatthewsCommented:
dizel247 said:
>>Manager1 and Manger2 - to make it clear Person To manage Sales, Person to manage Purchasing

I would suggest altering your design to something more like:

tblCompanies
----------------------------------------------------------
CompanyID (PK)
CompanyName

tblRoles
----------------------------------------------------------
RoleID (PK)
RoleDescr

tblManagers
----------------------------------------------------------
ManagerID (PK)
LName
FName

tblManagerCompany
----------------------------------------------------------
CompanyID (PK, FK)
ManagerID (PK, FK)
RoleID (FK)

With this structure, you can track additional managers if you need to, without having to alter your
basic design.
0
 
dizel247Author Commented:
shasund your solution didnt work for some reason.

matthewspatrick, I have though of that the problem is that I have this information updated on the Companies section. If I create the way you mention I will have to update different tables @ the same time. I belive its will be difficult.

Roman
0
 
Patrick MatthewsCommented:
dizel247 said:
>>matthewspatrick, I have though of that the problem is that I have this information updated on the
>>Companies section. If I create the way you mention I will have to update different tables @ the
>>same time. I belive its will be difficult.

Please explain what you mean.  The design I suggested should *eliminate* the need to update more
than one table at a time, because it removes redundant data.
0
 
imitchieCommented:

Select A.CompanyName, B.Manager_Name, C.Manager_Name
From Company A
LEFT JOIN Managers B ON B.Manager_ID = A.Manager1_ID
LEFT JOIN Managers C ON C.Manager_ID = A.Manager2_ID

Open in new window

0
 
Computer101Commented:
Forced accept.

Computer101
Community Support Moderator
0
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

Featured Post

Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

  • 2
  • 2
  • 2
  • +3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now