Hi everyone,
I have 2 tables with table A containing an 'email' field and table B
containing 2 fields 'primaryemail' and 'secondaryemail'. Now is it possible
to issue a query that would return only the unqiue email addresses in these
3 fields? So a long list with no duplicate emails(distinct).
Thank you
Maz. 6 1136
You might be better off asking this in a SQL group, but I think you could do
a union of selects, one select for each field. You would then need to get a
distinct listing of the whole. I'm not sure, off the top of my head exactly
how you'd go about that. It may require a temporary table where you insert
based on the union and then select distinct on the temporary table.
But like I said, the SQL newsgroups may offer more specific answers.
Pete
"Maziar Aflatoun" <ma***@rogers.com> wrote in message
news:ZR********************@news04.bloor.is.net.ca ble.rogers.com... Hi everyone,
I have 2 tables with table A containing an 'email' field and table B containing 2 fields 'primaryemail' and 'secondaryemail'. Now is it
possible to issue a query that would return only the unqiue email addresses in
these 3 fields? So a long list with no duplicate emails(distinct).
Thank you Maz.
yes, just query the Table A, since emails in Table A is unqiue. and should
have primary key to identify them
"Maziar Aflatoun" <ma***@rogers.com> wrote in message
news:ZR********************@news04.bloor.is.net.ca ble.rogers.com... Hi everyone,
I have 2 tables with table A containing an 'email' field and table B containing 2 fields 'primaryemail' and 'secondaryemail'. Now is it
possible to issue a query that would return only the unqiue email addresses in
these 3 fields? So a long list with no duplicate emails(distinct).
Thank you Maz.
On Sat, 20 Dec 2003 07:27:53 GMT, "Maziar Aflatoun" <ma***@rogers.com>
wrote: Hi everyone,
I have 2 tables with table A containing an 'email' field and table B containing 2 fields 'primaryemail' and 'secondaryemail'. Now is it possible to issue a query that would return only the unqiue email addresses in these 3 fields? So a long list with no duplicate emails(distinct).
Thank you Maz.
Not sure, but it sounds like you want more than you are asking for
here. I read into your question that table A will have either a
Primary or Secondary email address. If this is the case, then Table A
will have everything you need.
Can you show some sample data and what you want out of your query?
"Pete Davis" wrote... You might be better off asking this in a SQL group,
I agree, as it's not connected to C#...
but I think you could do a union of selects, one select for each field. You would then need to get a distinct listing of the whole.
It should just be necessary to do three separate queries, as the "union" in
itself *should* remove duplicates:
select email from tableA
UNION
select primaryemail from tableB
UNION
select secondaryemail from tableB
However, there's no guarantee for this to work in the OP's specific case as
he didn't mention which database the tables resides in, and not all
databases conform to the SQL-standard. E.g. in some databases it's necessary
to use three distinct queries:
select distinct email from tableA
UNION
select distinct primaryemail from tableB
UNION
select distinct secondaryemail from tableB
....and in other databases, the union operation doesn't even exist...
// Bjorn A
Well,
Imagine the following
In Table A, I have a field 'email' em****@rogers.com em****@rogers.com em****@rogers.com
and in Table B, I have the 2 fields 'primaryemail' and 'secondaryemail' with
the following data
Under field 'primaryemail' I have em****@rogers.com em****@rogers.com em****@rogers.com
and finally in the field 'secondaryemail' I have em****@rogers.com em****@rogers.com
Now how would I get a list containing only the unique email address of all
the emails above?
Thank you
Maz.
"Dan Brussee" <db******@nc.rr.com> wrote in message
news:60********************************@4ax.com... On Sat, 20 Dec 2003 07:27:53 GMT, "Maziar Aflatoun" <ma***@rogers.com> wrote:
Hi everyone,
I have 2 tables with table A containing an 'email' field and table B containing 2 fields 'primaryemail' and 'secondaryemail'. Now is it
possibleto issue a query that would return only the unqiue email addresses in
these3 fields? So a long list with no duplicate emails(distinct).
Thank you Maz.
Not sure, but it sounds like you want more than you are asking for here. I read into your question that table A will have either a Primary or Secondary email address. If this is the case, then Table A will have everything you need.
Can you show some sample data and what you want out of your query?
Caution: AIR CODE follows...
Select Email from TblA
UNION
Select PrimaryEmail from TblB as Email
UNION
Select SecondaryEmail from TblB as Email
On Sun, 21 Dec 2003 07:33:42 GMT, "Maziar Aflatoun" <ma***@rogers.com>
wrote: Well,
Imagine the following
In Table A, I have a field 'email' em****@rogers.com em****@rogers.com em****@rogers.com
and in Table B, I have the 2 fields 'primaryemail' and 'secondaryemail' with the following data
Under field 'primaryemail' I have em****@rogers.com em****@rogers.com em****@rogers.com
and finally in the field 'secondaryemail' I have em****@rogers.com em****@rogers.com
Now how would I get a list containing only the unique email address of all the emails above?
Thank you Maz. "Dan Brussee" <db******@nc.rr.com> wrote in message news:60********************************@4ax.com.. . On Sat, 20 Dec 2003 07:27:53 GMT, "Maziar Aflatoun" <ma***@rogers.com> wrote:
>Hi everyone, > >I have 2 tables with table A containing an 'email' field and table B >containing 2 fields 'primaryemail' and 'secondaryemail'. Now is itpossible >to issue a query that would return only the unqiue email addresses inthese >3 fields? So a long list with no duplicate emails(distinct). > >Thank you >Maz. >
Not sure, but it sounds like you want more than you are asking for here. I read into your question that table A will have either a Primary or Secondary email address. If this is the case, then Table A will have everything you need.
Can you show some sample data and what you want out of your query? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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