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Sql 2008 Table duplication

Posted on 2011-09-14
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Last Modified: 2012-05-12
If I wanted to create a table and make the columns equal the data from another table, can i do this??

Example:

I have a table called plantname_foods_USA_INC_Foodinfo
Under that table I have a column called contract_information_grower
The data in that column is:   grower 1

I want to create a table called plantname
a column called Farm
and data that equals the data from the contract_information_grower column in the plantname_foods_USA_INC_Foodinfo table.

Thanks!!

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Question by:HDM
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Expert Comment

by:knightEknight
ID: 36539370
select contract_information_grower as Farm
into plantname
from plantname_foods_USA_INC_Foodinfo
where 1 = 0
0
 
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Expert Comment

by:knightEknight
ID: 36539379
The above will create the single-column table empty ... to create it with the actual data, remove the WHERE clause.
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Expert Comment

by:knightEknight
ID: 36539383
also, the above assumes that the table plantname doesn't exist yet.
0
 

Author Comment

by:HDM
ID: 36539399
Will this create a "Live" link??

If the data in the first table changes will it reflect to the new table??
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LVL 33

Expert Comment

by:knightEknight
ID: 36539406
no, what you are talking about is a view ... do this:

create view plantname
as
select contract_information_grower as Farm
from plantname_foods_USA_INC_Foodinfo
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LVL 33

Expert Comment

by:knightEknight
ID: 36539407
... then you can do this:  select * from plantname
and it will reflect changes in the actual table plantname_foods_USA_INC_Foodinfo
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Expert Comment

by:knightEknight
ID: 36539416
... and of course you can include additional columns (if you want) from the original table.

OR, if what you are looking for is all the distinct values from the original column (e.g. without repeats) then include the distinct keyword:

create view plantname
as
select distinct contract_information_grower as Farm
from plantname_foods_USA_INC_Foodinfo
0
 

Author Comment

by:HDM
ID: 36539454
It will take a me a few to assimulate that info.

Thanks!!
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LVL 33

Accepted Solution

by:
knightEknight earned 500 total points
ID: 36539493
Take your time!  Here's more ...

From your perspective a view is really nothing more than a named query.  So you can include in a view pretty much anything you can include in a SELECT query ... this includes GROUP BY, MIN, MAX, COUNT, as well as table joins.  In your case, if you want to include additional columns in your simple view, that's easy enough (this is just an example)...

create view plantname  -- fyi - use alter instead of create to change an existing view
as
select T.contract_information_grower as Farm,  T.columnA as MyNewNameA,  T.columnB as MyNewNameB
from plantname_foods_USA_INC_Foodinfo T

GO

select * from plantname
0
 

Author Closing Comment

by:HDM
ID: 36539722
SWEET!!  Found "Alias"  :-)

That fixes EVERYTHING.  :-)

Thanks SO much!!
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