Relatively easy SQL SELECT statement issues :/

Hi All,

I am trying to perform a relatively simple SELECT query. Firstly heres my 3 tables im working on:

CREATE TABLE business_contact
(
BusContactID INT NOT NULL AUTO_INCREMENT,
Title VARCHAR(5),
Surname VARCHAR(30),
FirstName VARCHAR(30),
PRIMARY KEY (BusContactID)
) TYPE = INNODB;

CREATE TABLE company
(
CompanyID INT NOT NULL AUTO_INCREMENT,
Name VARCHAR(50) NOT NULL,
Manager VARCHAR(25),
PRIMARY KEY (CompanyID)
) TYPE = INNODB;

CREATE TABLE works_for
(
CompanyID INT NOT NULL,
BusContactID INT NOT NULL,
Index (CompanyID),
FOREIGN KEY (CompanyID) REFERENCES company (CompanyID) ON UPDATE CASCADE ON DELETE CASCADE,
Index (BusContactID),
FOREIGN KEY (BusContactID) REFERENCES business_contact (BusContactID) ON UPDATE CASCADE ON DELETE CASCADE,
PRIMARY KEY (CompanyID, BusContactID)
) TYPE = INNODB;

The 'company' table quite obviously stores details about a range of companies, the 'business_contact' about business contacts and the 'works_for' table uses the PK values from the previous tables to associate a contact with a particular employer.

What i want to do is to retrieve a list of all the contacts and (if applicable) the name of the company they work for. My knowledge of SQL is relatively limited and so far ive managed to retrieve the all the contact and the where applicable, the key value of the company a contact works for. So all i really need to do is replace the key value with the company name, but, i dont know how!! :confused:

Heres my current query:

SELECT business_contact.*, works_for.buscontactid
FROM business_contact
LEFT JOIN works_for
ON business_contact.buscontactid = works_for.buscontactid

Can anyone help me with fetching all the contacts in the table and if the contact works for a company then listing the name of the company?!?!?

Thanks in advance to anyone who can help

Damocles.SELECT business_contact.*, company.name
FROM business_contact
LEFT JOIN works_for
ON business_contact.buscontactid = works_for.buscontactid
LEFT JOIN company
ON works_for.companyid = company.companyid|||select business_contact.Title
, business_contact.Surname
, business_contact.FirstName
, company.Name
, company.Manager
from business_contact
left outer
join works_for
on business_contact.BusContactID
= works_for.BusContactID
left outer
join company
on works_for.CompanyID
= company.CompanyID|||Thanks to both for your replies, works great!

I could really do to read a decent SQL tutorial at some point!

Damocles.

Relative Dates

I need to create an SQL Statement that pulls data selected by a datetime
field. i want to be able to select dates and times relative to the time that
the query is run.
Can these date manipulations be done in the SQL statement?
Thanks
Have a look at DateDiff in BOL. Here is an example from SQL Server 2000 BOL:
USE pubs
GO
SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
FROM titles
GO
GetDate() will allow you to compare to the time the query was run.
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com
|||i am not sure how i would use thet for waht i want, basically to start with i
need to get all records that were created TODAY. then go on to records
created within the last n days
"Paul Ibison" wrote:

> Have a look at DateDiff in BOL. Here is an example from SQL Server 2000 BOL:
> USE pubs
> GO
> SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
> FROM titles
> GO
> GetDate() will allow you to compare to the time the query was run.
> Cheers,
> Paul Ibison SQL Server MVP, www.replicationanswers.com
>
>
|||Hi Mark,
something like this should do it:
SELECT cols FROM yourtable
where DATEDIFF(day, pubdate, getdate()) = 0
SELECT cols FROM yourtable
where DATEDIFF(day, pubdate, getdate()) <= n
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com
|||>i am not sure how i would use thet for waht i want, basically to start with
>i
> need to get all records that were created TODAY. then go on to records
> created within the last n days
Expanding on Paul's example, if you want to consider date and time:
DECLARE @.n int
SET @.n = 7
SELECT title
FROM titles
WHERE pubdate >= DATEADD(day, @.n * -1, GETDATE())
To consider date only:
DECLARE @.n int
SET @.n = 7
SELECT title
FROM titles
WHERE pubdate >= DATEADD(day, @.n * -1, DATEDIFF(day, 0, GETDATE())
Hope this helps.
Dan Guzman
SQL Server MVP
"Mark Shields" <MarkShields@.discussions.microsoft.com> wrote in message
news:2EE795F5-DA9D-4E51-A78B-57C929EDAE6B@.microsoft.com...[vbcol=seagreen]
>i am not sure how i would use thet for waht i want, basically to start with
>i
> need to get all records that were created TODAY. then go on to records
> created within the last n days
> "Paul Ibison" wrote:
sql

Relative Dates

I need to create an SQL Statement that pulls data selected by a datetime
field. i want to be able to select dates and times relative to the time that
the query is run.
Can these date manipulations be done in the SQL statement?
ThanksHave a look at DateDiff in BOL. Here is an example from SQL Server 2000 BOL:
USE pubs
GO
SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
FROM titles
GO
GetDate() will allow you to compare to the time the query was run.
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com|||i am not sure how i would use thet for waht i want, basically to start with i
need to get all records that were created TODAY. then go on to records
created within the last n days
"Paul Ibison" wrote:
> Have a look at DateDiff in BOL. Here is an example from SQL Server 2000 BOL:
> USE pubs
> GO
> SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
> FROM titles
> GO
> GetDate() will allow you to compare to the time the query was run.
> Cheers,
> Paul Ibison SQL Server MVP, www.replicationanswers.com
>
>|||Hi Mark,
something like this should do it:
SELECT cols FROM yourtable
where DATEDIFF(day, pubdate, getdate()) = 0
SELECT cols FROM yourtable
where DATEDIFF(day, pubdate, getdate()) <= n
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com|||>i am not sure how i would use thet for waht i want, basically to start with
>i
> need to get all records that were created TODAY. then go on to records
> created within the last n days
Expanding on Paul's example, if you want to consider date and time:
DECLARE @.n int
SET @.n = 7
SELECT title
FROM titles
WHERE pubdate >= DATEADD(day, @.n * -1, GETDATE())
To consider date only:
DECLARE @.n int
SET @.n = 7
SELECT title
FROM titles
WHERE pubdate >= DATEADD(day, @.n * -1, DATEDIFF(day, 0, GETDATE())
Hope this helps.
Dan Guzman
SQL Server MVP
"Mark Shields" <MarkShields@.discussions.microsoft.com> wrote in message
news:2EE795F5-DA9D-4E51-A78B-57C929EDAE6B@.microsoft.com...
>i am not sure how i would use thet for waht i want, basically to start with
>i
> need to get all records that were created TODAY. then go on to records
> created within the last n days
> "Paul Ibison" wrote:
>> Have a look at DateDiff in BOL. Here is an example from SQL Server 2000
>> BOL:
>> USE pubs
>> GO
>> SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
>> FROM titles
>> GO
>> GetDate() will allow you to compare to the time the query was run.
>> Cheers,
>> Paul Ibison SQL Server MVP, www.replicationanswers.com
>>

Relative Dates

I need to create an SQL Statement that pulls data selected by a datetime
field. i want to be able to select dates and times relative to the time that
the query is run.
Can these date manipulations be done in the SQL statement?
ThanksHave a look at DateDiff in BOL. Here is an example from SQL Server 2000 BOL:
USE pubs
GO
SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
FROM titles
GO
GetDate() will allow you to compare to the time the query was run.
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com|||i am not sure how i would use thet for waht i want, basically to start with
i
need to get all records that were created TODAY. then go on to records
created within the last n days
"Paul Ibison" wrote:

> Have a look at DateDiff in BOL. Here is an example from SQL Server 2000 BO
L:
> USE pubs
> GO
> SELECT DATEDIFF(day, pubdate, getdate()) AS no_of_days
> FROM titles
> GO
> GetDate() will allow you to compare to the time the query was run.
> Cheers,
> Paul Ibison SQL Server MVP, www.replicationanswers.com
>
>|||Hi Mark,
something like this should do it:
SELECT cols FROM yourtable
where DATEDIFF(day, pubdate, getdate()) = 0
SELECT cols FROM yourtable
where DATEDIFF(day, pubdate, getdate()) <= n
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com|||>i am not sure how i would use thet for waht i want, basically to start with
>i
> need to get all records that were created TODAY. then go on to records
> created within the last n days
Expanding on Paul's example, if you want to consider date and time:
DECLARE @.n int
SET @.n = 7
SELECT title
FROM titles
WHERE pubdate >= DATEADD(day, @.n * -1, GETDATE())
To consider date only:
DECLARE @.n int
SET @.n = 7
SELECT title
FROM titles
WHERE pubdate >= DATEADD(day, @.n * -1, DATEDIFF(day, 0, GETDATE())
Hope this helps.
Dan Guzman
SQL Server MVP
"Mark Shields" <MarkShields@.discussions.microsoft.com> wrote in message
news:2EE795F5-DA9D-4E51-A78B-57C929EDAE6B@.microsoft.com...[vbcol=seagreen]
>i am not sure how i would use thet for waht i want, basically to start with
>i
> need to get all records that were created TODAY. then go on to records
> created within the last n days
> "Paul Ibison" wrote:
>

Reissue restore statement

I am trying to restore a database but i keep getting an eror message saying

"reissue restore statement using with replace to overwrite existing files."

How can I get around this problem to get my datatabsed restored? I am abit of a novice as well so i could do with some easy to understand instructions.

Thank you for your time

RESTORE DATABASE MyDb FROM <insert info here>
WITH REPLACE

The above will "get around" the problem you experience. Essentially you are OVERWRITING YOUR EXISTING DATABASE THOUGH so be careful!

Hope this helps -

Scott Whigham

Check out my SQL Server 2005 Video Tutorials: http://www.learnsqlserver.com/

|||

Cheers for the help scott.

Do i need to type that into a query? Also this bithere RESTORE DATABASE MyDb FROM <insert info here>

is this the destination of my backup for example mydocuments/testdb