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SELECT help

Author

Topic

jsmoritz
Starting Member

3 Posts

Posted - 2009-02-13 : 17:04:22

I have a select statement that reads:

SELECT tblStudent.strStuLastName, tblBank.intBankBalance
FROM tblStudent INNER JOIN
tblBank ON tblStudent.StudentID = tblBank.intBankStuID
WHERE tblStudent.booStuInactive = 0

This is my question. Some students are not in tblBank because they haven't received any points yet but I want them included in the query as having a balance of 0. Is there a way to do this?

sodeep
Master Smack Fu Yak Hacker

7174 Posts

Posted - 2009-02-13 : 17:06:49

[code]SELECT tblStudent.strStuLastName, Coalesce(tblBank.intBankBalance,0)as IntBankBalance
FROM tblStudent LEFT OUTER JOIN
tblBank ON tblStudent.StudentID = tblBank.intBankStuID
WHERE tblStudent.booStuInactive = 0[/code]

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2009-02-13 : 17:07:04

You need to use an OUTER JOIN then.

SELECT tblStudent.strStuLastName, tblBank.intBankBalance
FROM tblStudent
LEFT OUTER JOIN tblBank ON tblStudent.StudentID = tblBank.intBankStuID
WHERE tblStudent.booStuInactive = 0

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

Subscribe to my blog

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2009-02-13 : 17:07:19

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

Subscribe to my blog

sodeep
Master Smack Fu Yak Hacker

7174 Posts

Posted - 2009-02-13 : 17:10:40

quote:

Originally posted by sodeep

SELECT tblStudent.strStuLastName, Coalesce(tblBank.intBankBalance,0)as IntBankBalance
FROM tblStudent LEFT OUTER JOIN
tblBank ON tblStudent.StudentID = tblBank.intBankStuID
WHERE tblStudent.booStuInactive = 0

Sorry,Should be:

SELECT tblStudent.strStuLastName, Coalesce(tblBank.intBankBalance,0)as IntBankBalance
FROM tblStudent LEFT OUTER JOIN
tblBank ON tblStudent.StudentID = tblBank.intBankStuID
AND tblStudent.booStuInactive = 0

jsmoritz
Starting Member

3 Posts

Posted - 2009-02-13 : 17:17:53

Thank you, thank you, thank you!!!!!

jsmoritz
Starting Member

3 Posts

Posted - 2009-02-13 : 17:39:44

It worked great. I have never understood outer joins and now I do. Coalesce is new to me also and will be handy in the future. The statement works great. Thanks again.

sodeep
Master Smack Fu Yak Hacker

7174 Posts

Posted - 2009-02-13 : 17:45:22

You are Welcome.

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-02-14 : 01:06:25

quote:
Originally posted by jsmoritz

It worked great. I have never understood outer joins and now I do. Coalesce is new to me also and will be handy in the future. The statement works great. Thanks again.

read this for more info

http://weblogs.sqlteam.com/jeffs/archive/2007/05/14/60205.aspx

http://sqlblogcasts.com/blogs/madhivanan/archive/2007/10/04/isnull-or-coalesce.aspx

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