name',
> SUM(log.hours) AS 'hours'
> FROM log LEFT OUTER JOIN empnum
> ON log.id = empnum.id
> WHERE log.pj = '$pj' GROUP BY id;
-Original Message-
From: DL Neil [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 05, 2002 6:42 PM
To: Forer, Leif; 'Nathan
You can do what you asked for by making a temporary table, as follows.
create temporary table T (this varchar(..), that varchar(..));
insert into T select tbl1.this, "no record" from tbl1 left join tbl2 on
tbl1.id = tbl2.id where tbl2.id is null;
insert into T select tbl1.this, tbl2.that from tbl
Leif,
> I'm not sure what you mean by "tbl2's population is a sub-set of that
> in tbl1". tbl1 contains user id nums and hours each user spent
working on a
> project. tbl2 contains user id nums and the first and last names that
> correspond to each user id. There are user id nums in tbl1 that
fields that are null. :>)
--Walt
-Original Message-
From: Forer, Leif [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 05, 2002 1:58 PM
To: 'DL Neil'; 'Nathan'; [EMAIL PROTECTED]
Subject: RE: SELECT this IF that
DN-
I'm not sure what you mean by "tbl2's pop
DN-
I'm not sure what you mean by "tbl2's population is a sub-set of that
in tbl1". tbl1 contains user id nums and hours each user spent working on a
project. tbl2 contains user id nums and the first and last names that
correspond to each user id. There are user id nums in tbl1 that do not
exi
Um, if there aren't any records in tbl1.id that match tbl2.id, it will return zero
records. I am not
away of the ability to output strings as custom errors, but you will get an Empty Set
result. You
can use that result in whatever front-end language you are using to output anything
you like.
D
Leif,
> I want to select and join data from two tables if the same id exists
in both
> tables. If the id only exists in one table I want MySQL to return a
string
> like "sorry, no records found". How can I do this?
>
> I'm guessing it's something like:
>
> mysql> SELECT tbl1.this, tbl2.that FRO
