constructing strings from table

Hi friends,
please help me in selecting values from the table

the record is as follows:
Id HomePhone WorkPhone Mobile Email
20 2323223 323232232 test@test.com

i have to select values as follows.

Id DeviceType DeviceInfo
20 HomePhone, Mobile, Email 2323223, 323232232, test@test.com


the one solution is:
select
'HomePhone, Mobile, Email' AS DeviceType
HomePhone + ',' + WorkPhone + ',' + MobilePhone + ',' + Email AS
DeviceInfo
from table where Id = 20

but here the work phone number is not available so that information
has to be truncated...

Thanks in Advance
Arunkumar.D

Re: constructing strings from table

Oonz (arundhaj@gmail.com) writes:
> Hi friends,
> please help me in selecting values from the table
>
> the record is as follows:
> Id HomePhone WorkPhone Mobile Email
> 20 2323223 323232232 test@test.com
>
> i have to select values as follows.
>
> Id DeviceType DeviceInfo
> 20 HomePhone, Mobile, Email 2323223, 323232232, test@test.com
>
>
> the one solution is:
> select
> 'HomePhone, Mobile, Email' AS DeviceType
> HomePhone + ',' + WorkPhone + ',' + MobilePhone + ',' + Email AS
> DeviceInfo
> from table where Id = 20
>
> but here the work phone number is not available so that information
> has to be truncated...

Provided that WorkPhone is blank, the query above make sense to me.
The output would be "2323223,,323232232,test@test.com". But if the
double comma wasn't there, how would you know which number that is
missing?

If WorkPhone is NULL, the entire expression will be NULL. In this
case you must use coalesce(WorkPhone, '') and similar for the other
columns.



--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downlo ads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books .mspx

Re: constructing strings from table

On May 23, 2:48 am, Erland Sommarskog wrote:
> Oonz (arund...@gmail.com) writes:
> > Hi friends,
> > please help me in selecting values from the table
>
> > the record is as follows:
> > Id HomePhone WorkPhone Mobile Email
> > 20 2323223 323232232 t...@test.com
>
> > i have to select values as follows.
>
> > Id DeviceType DeviceInfo
> > 20 HomePhone, Mobile, Email 2323223, 323232232, t...@test.com
>
> > the one solution is:
> > select
> > 'HomePhone, Mobile, Email' AS DeviceType
> > HomePhone + ',' + WorkPhone + ',' + MobilePhone + ',' + Email AS
> > DeviceInfo
> > from table where Id = 20
>
> > but here the work phone number is not available so that information
> > has to be truncated...
>
> Provided that WorkPhone is blank, the query above make sense to me.
> The output would be "2323223,,323232232,t...@test.com". But if the
> double comma wasn't there, how would you know which number that is
> missing?
>
> If WorkPhone is NULL, the entire expression will be NULL. In this
> case you must use coalesce(WorkPhone, '') and similar for the other
> columns.
>
> --
> Erland Sommarskog, SQL Server MVP, esq...@sommarskog.se
>
> Books Online for SQL Server 2005 athttp://www.microsoft.com/technet/prodtechnol/sql/2005/down loads/books...
> Books Online for SQL Server 2000 athttp://www.microsoft.com/sql/prodinfo/previousversions/boo ks.mspx- Hide quoted text -
>
> - Show quoted text -


The solution i have given is a static one.
The above solution holds good when all the column have value in it.
but when one column, say "HomePhone" is not available the resulting
table should build as


Id DeviceType DeviceInfo
20 Mobile, Email 323232232, t...@test.com

please help me in this regards.

Re: constructing strings from table

Oonz (arundhaj@gmail.com) writes:
> The solution i have given is a static one.
> The above solution holds good when all the column have value in it.
> but when one column, say "HomePhone" is not available the resulting
> table should build as
>
>
> Id DeviceType DeviceInfo
> 20 Mobile, Email 323232232, t...@test.com
>
> please help me in this regards.

Use the CASE exprssion:

SELECT DeviceType = CASE WHEN HomePhone IS NOT NULL
THEN HomePhone + ','
ELSE ''
END +
CASE WHEN WorkPhone IS NOT NULL
THEN WorkdPhone + ','
ELSE ''
END ...

It gets a little devilish if the email is missing as you may end with a
trailing comma, but maybe you can live wity that.


--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downlo ads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books .mspx