Using Data As Column Aliases

Jan 15, 2008

Hi,

I’m working with a really old design migrated to SQL 2005, in which I basically have two tables…

Table 1 contains all the “proper” data, and has columns called: col_1, col_2, col_3

Table 1’s data is something like:

col_1, col_2, col_3
Jack,jack@yahoo.ca,Toronto
Jill,jill@hotmail.com,Montreal

Table 2 contains meta-data for Table 1, specifically, it has two columns: column, meta-data

Table 2’s data is something like:

column,metadata
col_1,name
col_2,email
col_3,city

(Hopefully, my description of the design makes sense….basically; Table 2’s data describes what’s in each column of Table 1).

So, the question, if I want to write a ‘SELECT’ on Table 1, how can I use the data in Table 2 as aliases (or column) headers.

I’m currently going down the path of building dynamic SQL statements in T-SQL….but before I get too far, wanted to vet this idea here (it’s always been a fantastic resource for me)

Thanks in advance!

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SELECT Column Aliases: Refer To Alias In Another Column?

Apr 9, 2008

Using SQL Server 2000.  How can I refer to one alias in another column?E.g., (this a contrived example but you get the idea)SELECT time, distance, (distance / time) AS speed, (speed / time) AS acceleration FROM dataNote how the speed alias is used in the definition of acceleration alias but this doesn't seem to work.

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SELECT Column Aliases: Refer To Alias In Another Column?

Apr 10, 2008

Using SQL Server 2000. How can I refer to one alias in another column?

E.g., (this a contrived example but you get the idea)

SELECT time, distance, (distance / time) AS speed, (speed / time) AS acceleration FROM data

Note how the "speed" alias is used in the definition of "acceleration" alias but this doesn't work.

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Multi Aliases With The Same Column?

Jun 17, 2008

TABLE1
======================

PriceList
---------
1
2
3
1
2
3
1
2
3


Price
-----
777
888
999
777
888
999
777
888
999
(pretend these columns are side by side)
======================


I need to make a query to:
SELECT PRICE AS 'PRICE1' WHERE PRICELIST = 1
AND SELECT PRICE AS 'PRICE2' WHERE PRICELIST = 2
AND SELECT PRICE AS 'PRICE3' WHERE PRICELIST = 3


the output that i want is:

PRICE1
------
777
777
777

PRICE2
------
888
888
888

PRICE3
-----
999
999
999
(pretend these columns are also side by side)

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Column Aliases In Case Statement In Order By

Jan 18, 2007

Hi All,

I have this query :

select col1, col2, col3, col4, col5,..... , (select col99 from tab2) as alias1 from tab1 where <condition>
order by
case @sortby
when 'col1' then col1,
when 'col2' then col2,
when 'col3' then col3,
when 'col99' then col99
end

when i execute the above query it gives me the following error message.

Server: Msg 207, Level 16, State 3, Line 1
Invalid column name 'col99'.

Thanks in advance.

Thanvi.

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Aliases

May 7, 2008

Please help...

I need help analyzing this query. I am not sure why the person that wrote this query used the same table for 3 different aliases.

FROM property,
address,
ppi,
code_table state,
code_table country,
code_table prop_role

I tried to get rid of :

code_table country,
code_table prop_role

and put "state" in any line that referenced:

code_table country,
code_table prop_role

to see if the query worked the same, but I different results. Why?

Please help...




--7 seconds to omplete.
--set explain on;
--UNLOAD TO '/export/home/permit/owneraddress.txt'
SELECT ppi.id,
ppi.property_id,
ppi.party_id,
ppi.address_id,
ppi.eff_from_date,
ppi.eff_to_date,
address.line_1,
address.line_2,
address.line_3,
address.city,
state.code_table_cd,
address.zip_postal_code,
country.code_description,
address.line_care_of,
prop_role.code_table_cd

FROM property,
address,
ppi,
code_table state,
code_table country,
code_table prop_role

WHERE property.id = ppi.property_id
AND ppi.address_id = address.id
AND (property.eff_to_date IS NULL OR property.eff_to_date >= getdate())
AND (ppi.eff_to_date IS NULL OR ppi.eff_to_date >= getdate())
AND ppi.eff_from_date <= getdate()
AND state.id = address.province_state_cd
AND country.id = address.country_cd
AND prop_role.id = ppi.prop_role_cd
AND prop_role.code_table_cd = 'OWNER'
AND property.pact_code <> 'PERS'

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Nov 9, 2004

Does anyone know of a neat way of aliasing tables in MS SQL Server 2000? I have a table [X] and I want to refer to it (in TSQL statements, stored procedures, etc.) by two names, say [X] and [Y]. There should be only one copy of the table's data.

I could handle this in my site logic (ie convert [Y] to [X]), but it would be really clean to handle this in the database.

Thanks for your advice.

Matt

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Mar 26, 2015

trying to write a query from 2 tables and join them only they share a column name of the same name.I can define both aliases seperatrly but get an error when trying both,

select
case_HDR.case_nbr as "test"
Case_DTL.case_nbr as "test2"
From
Case_HDR, case_dtl

I need to join them also but trying to work in stages.

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Jun 27, 2007

I have a SELECT query with an alias in it.
The intellisense shows all field except the alias one.
What goes wrong?

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Mar 8, 2006

I'm in the process of building a site and converting views/tables/queries from an Access database to SQL. I've done this quite a few times, and never had any significant issues I couldn't figure out on my own.

In Enterprise Manager, I've created a view and in the query, I need to create an alias that is similar to below:

SELECT ((monthmult) + ((b2avg*15)-(av2*10)) + (lp1+lp2) + ((b1avg*30)-(av1*20))) as PIndexValue

which is how the formula reads in the Access view.

However, when I got to run the query, SQL strips out all of the parentheses and calculates the value in left to right order:

(monthmult + b2avg*15-av2*10 + lp1+lp2 + b1avg*30-av1*20) as PIndexValue

Which gives me an incorrect value.

Does anyone know why this is happening, or am I just unaware of the right way of doing it?

Thank you,

Derrick

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May 6, 2008

Hi,

is it possible to assign a numeric value as a column alias:

select ... as 1234 from ...

does not work.

Cheers

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Feb 15, 2007

Does anyone know how to create SQL Server aliases for Itanium servers?

Alternatively does anyone know how to use SMO to create a SQLAliasCollection for a specific server? I can't seem to find how to get that collection.

I've added aliases that work for 32 bit applications but they don't seem to be used for 64 bit applications.

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Oct 5, 2006

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----------------------------

SELECT x.trkuniq, s.mstuniq, t.meetuniq,
c.coursec AS Course_Code,
c.descript AS Course_Name,
[q.cactus #] AS Cactus_#
s.sectionn AS Section,
RTRIM(f.lastname) + ', ' + RTRIM(f.firstname) AS Teacher, f.funiq,
t.termc AS Term_Code, zd.cycldayc AS Day,
zp.periodc AS Period, zp.periodn,
p.schoolc AS School
FROM mstmeet t INNER JOIN
mstsched s ON t.mstuniq = s.mstuniq INNER JOIN
trkcrs x ON s.trkcrsuniq = x.trkcrsuniq INNER JOIN
course c ON x.crsuniq = c.crsuniq INNER JOIN
track p ON p.trkuniq = x.trkuniq INNER JOIN
facdemo f ON s.funiq = f.funiq INNER JOIN
courses q ON c.coursec = [q.course number] INNER JOIN
trkper zp ON t.periodn = zp.periodn AND
x.trkuniq = zp.trkuniq INNER JOIN
trkcycle zd ON t.cycldayn = zd.cycldayn AND
x.trkuniq = zd.trkuniq

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Jan 3, 2007

I have been working with SQL for quiet a while but think this perhaps is a very basic question that has always escaped me:

At my work I was exposed to both, MS SQL Server 2000 and Sybase Adaptive Server Anywhere/Sybase SQL Anywhere.

Under Sybase I was able to use aliases in other calculations and filters but i have never been able to do the same with SQL.

Example:
In Sybase I can write this:

Select Price * Units as Cost Cost * SalesTax as TotalTaxFrom Invoice Where TotalTax > 3.5
However if i want to do this in MS SQL 2000 i have to go trough


Select
Price * Units as Cost
Price * Units * SalesTax as TotalTax
From Invoice
Where (Price * Units * SalesTax) > 3.5

In the long run this is costing me a lot of code redundancy, not to mention a debugging nightmare. Is there a way to replicate this alias usage in MS SQL Server?

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Mar 4, 2015

TableX
-------
X1
X2
X3

TableY
-------
Y1
Y2
Y3

I need to write a query with the following joins:

TableX.X1 = TableY.Y1
TableX.X2 = TableY.Y2

What is the proper way to do this in SQL? Would it be:

select x.*
from TableX x
join TableY y1 on y1.Y1 = x.X1
join TableY y2 on y2.Y2 = x.X2

Is there a more proper way to do this without creating multiple aliases of the same table?

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Nov 14, 2007

Just stumbled over the interesting bug -
if you have an SQLExpress server and the "allow remote connection" in SQL Instance is turned ON, it doesn't means that it works if you create some aliases for this instance

If Im trying to connect to SQLExpress via new created alias ('localhost' for example) I got the "SQL Server does not allow remote connections" error. Albeit, connecting to ".SQLExpress" is successful.
I've checked the properties of locahost DB instance in SQL Management Studio - remote connection is allowed.
I've restarted the SQLExpress instance.
There is no SQLServer or other instances on my PC

But it doesn't work

How to fix this and allows to connect to sql instance via aliases?

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Dec 6, 2007

HI,
I have a view where I want to add Rundate and Prev Month Rundate as computed columns to simplify my joins and calculations.
Rundate will be a select from another table that has a list of rundates for each month like this.
SELECT MAX(fm_dateend)
FROM dbo.tbl_FiscalMonth
WHERE fm_dateend <= getdate()) AS smalldatetime) AS CurrRunDate
Now, I want to add Prev Month Rundate on the basis of CurrRunDate but it does not accept CurrRunDate. The query is like this

SELECT MAX(fm_dateend)
FROM dbo.tbl_FiscalMonth
WHERE fm_dateend < CurrRunDate) AS smalldatetime) AS PrevMonthRunDate

Can anyone help me to work around with the alias as I dont like to put a whole bunch of code inplace of CurrRunDate(Alias).

Thanks,
Shariq

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I am asking because currently the client aliases on some of our virtual sql servers are using named pipes and I think this is causing a problem with our backups.

Thanks,
Adrian.

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Apr 4, 2008

Can someone please shed some light on what seems to me to be a common requirement.

If I create an alias or linked server to Server1 - say Alias1 - on Server1 and then use that name in a query on Server1, a remote/distributed query is always used (even though we are running on the local server and that overhead is completely unnecessary).

Is SQL Server really not capable of deciding that
select * from Alias1.db1.dbo.table1
and
select * from Server1.db1.dbo.table1
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It just seems that if that is not possible, then the only way to create system independent stored procs that can run in dev, staging, and production environments and work with multiple databases on multiple servers is to create all sorts of scripts to regenerate all the procs whenever you move a database between servers?

If SQL Server is even close to the enterprise big iron server that MS now claims it is, it surely needs to support running in dev, staging, and production environments and work with multiple databases on multiple servers?!

I'm really looking for someone to tell me I'm missing something simple, and of course you can do this - but complex workarounds are invited too :-)
This is not something I am investigating as an academic exercise, I am already doing this, but I have to figure out how to do it better because with all these unnecessary distributed queries, performance is horrible.

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Apr 9, 2014

I have the following query

SELECT [KPI].*
FROM
OPENQUERY(LINKED_OLAP,'SELECT
HEAD(TAIL(DESCENDANTS
(TAIL([Time].[CalendarMonth].[Year],1), [Time].[CalendarMonth].[Month]),4),3) ON COLUMNS,
([Game].[Game Code].&[1] ,

[Code] ...

The last three columns are dynamically generated because they change during time. Next month they will be different.

I like to introduce aliases for them and to have them in the select as 'TWO_MONTHS_AGO','ONE_MONTH_AGO', 'CURRENT_MONTH'

I wonder if exists something like [KPI].(0), [KPI].(1), and etc.. of the OPENQUERY to get the selected columns by their ordering number...

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Aug 20, 2014

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Table creation and data insert is below.

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[TrialBalance](
[Trial_Balance_ID] [int] IDENTITY(1,1) NOT NULL,

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Feb 27, 2008

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1 MIKE MORGAN
2 SARA JOHANES


So, I will insert that data in a FLAT FILE CONNECTION MANAGER, which I configured with 3 columns and I did the corresponding mapping in the FLAT FILE DESTINTATION.


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Probably I can solve this part by introducing a DERIVED COLUMN and there I can configure the zeros that I want to add to the column. But I'm not sure if I can do that without having a input column.
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Jan 9, 2008

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product_code month value
350 1 10
350 2 20
350 3 30

product_table
product_code profit_center
350 4520

result_view

product_code profit_center mon1 mon2 mon3
350 4520 10 20 30

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result_view

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350 4520 0 20 0
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Jul 31, 2007


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Hi there,
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1 - - - - - - -2 - - - - - - -50 - - - 41
1 - - - - - - -3 - - - - - - -50 - - - 42
1 - - - - - - -4 - - - - - - -50 - - - 40
2 - - - - - - -1 - - - - - - -50 - - - 35
2 - - - - - - -2 - - - - - - -50 - - - 40
2 - - - - - - -3 - - - - - - -50 - - - 42
2 - - - - - - -4 - - - - - - -50 - - - 41

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