microsoft.public.sqlserver.programming Google Group

Re: Interview question...

2009-11-26T23:33:40Z

I have been asked by several of my clients to do technical interviews for
them and I use the same method Kalen. I want to see what the candidate can
come up with given incomplete or nebulous information - which is exactly
what they will get in the real world.

Interesting observation: new SQL time machine! :)

2009-11-26T23:26:56Z

Interesting observation: new SQL time machine! :)
Run this several times and note that sometimes the first value is greater than the second!
I thought that these should be the same.
I understand that it's due to the way datetime rounds to 3, 7 or 0.
It is just interesting to note!
DECLARE @v datetime = SYSDATETIME()

Re: Why can't recursive queries contain...?

2009-11-26T23:16:06Z

Again, yes I know. That is why someone would need to write a linq database.
Sounds like a gray area to me. Certainly linq could be optimised by an
optimiser in the same way sql is.
I have provided a code sample (check back through the posts, did you miss
it?) but as I said I am not going to install sql2008 just to write some

Re: Why can't recursive queries contain...?

2009-11-26T23:12:29Z

Sounds a lot like sqlserver :-)))
Don't worry, although I'm no expert I know how to write fairly efficient
sql.
Makes sense but it is certainly a gray area now we have linq and sqlserver
has procedural commands.
Michael

Re: Country > Region

2009-11-26T23:12:25Z

I would do this with a CountryCode and a RegionCode as key in Regions,
and also use the two colunm-key as foreign key. I don't know how you
define your regions, but there is an ISO standard for that as well,
[link].

Re: Localized Tables

2009-11-26T23:07:44Z

That's the country code. You should use the language code in the table.
Certainly this is an issue on which there is more tha one opinion-
Yes, it may change, and I certainly think that primary keys should be
immutable. But I think that common codes likes country codes or language
codes can count as immutable. And country codes can definitely change.

Re: Interview question...

2009-11-26T23:01:58Z

The difficulty with this is that the candidate may think that he is not
in position to ask questions. This is even more accentuated over the
phone. True, the fact that the candidate has/does not have the courage
to ask questions, may be as revealing about his suitability for the
position than anything else. But I think it is a little mean if the

Re: Wonder how to do nested logic

2009-11-26T22:37:51Z

You can use recursive CTE:
CREATE TABLE Items (
item VARCHAR(10) NOT NULL PRIMARY KEY,
superceder VARCHAR(10) REFERENCES Items(item));
INSERT INTO Items VALUES('ITEM1', NULL);
INSERT INTO Items VALUES('ITEM2', 'ITEM1');
INSERT INTO Items VALUES('ITEM3', 'ITEM2');
INSERT INTO Items VALUES('ITEM4', NULL);

Wonder how to do nested logic

2009-11-26T21:53:44Z

Hello I am trying rank several items based on what items supercede
them.
Table is simple like this:
ITEM SUPERCEDER
ITEM1
ITEM2 ITEM1
ITEM3 ITEM2
ITEM4
ITEM5 ITEM4
ITEM6 ITEM5
In this case an e.g is item6 is superceded by item5 which in turn is

Re: Question on Triggers

2009-11-26T21:15:36Z

Peter,
If the trigger fires, it can either execute code directly or it can execute
a stored procedure. Cross database does have security issues, but Erland
Sommarskog's article discusses all the ways that you can get this to work,
with the pros and cons of each.
Ownership chains do not work between databases unless you have specifically

Re: Question on Triggers

2009-11-26T21:07:14Z

Lookup EXECUTE AS in books online. I don't think you need this - but if you
have to use a different user context to execute the procedure, that will
work.
You don't actually need the stored procedure in DB2 - you should be able to
create a stored procedure in DB1 that updates the table in DB2. The user is

Re: Question on Triggers

2009-11-26T20:28:01Z

Hi Russell,
Currently i do not have any examples or code as I am only at planning stage
and trying to find out if this is possible.
I will try and explain a bit more clearly
John can access DB1 and update his status in table 1.
I am trying to find out if i can create a trigger that fires when table 1 .

Re: Country > Region

2009-11-26T19:37:20Z

Miguel,
It depends, of course. If your countries _always_ have regions, then you
can simply have your Centers refer to the Regions.
If, however, one of the Countries does not have Regions you will have to
either:
1. Carry both CountryID and RegionID in the Centers
2. Force an artificial Region for every Country.

Re: Question on Triggers

2009-11-26T19:33:56Z

Peter,
I am sorry, but I do not fully understand what you are asking, but since it
is related to permissions you might find the following useful:
[link]
This is about giving permissions to stored procedures, but I believe that it
explains things enough for you to leverage your problem.

Question on Triggers

2009-11-26T19:09:01Z

I’m running SQL2008.
I am trying to work out a soluition to a security problem. I have simplified
my query to find out if it is possible and a simple example
There are two databases ( DB1 and DB2 )
DB1 has a table called TB1 and a field (Varchar) called ‘Status’
DB2 has a table called TB2 and a stored procedure called SP1. SP1 accepts a