Table Aliases?
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 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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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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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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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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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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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
Formatting question. The query below is failing on the columns with spaces in the name. I've tried brackets and single quotes with no luck. How should this be formatted?
----------------------------
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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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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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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Oct 31, 2006
I have a question regarding the nature of virtual sql servers, specificially what protocol is used to communicate to the server when a request is made by a client.
For example, if a scheduled job is run on the virtual sql server, what determines the protocol used (e.g. TCP/IP, named pipes etc.) by SQL Server agent? Is it the client network alias set up on the virtual server?
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
should be optimized and executed exactly the same when Alias1 is Server1, but that it is a distributed query ONLY when Alias1 is really referring to a remote server? I realize that the four part name is not necessary when I am referring to objects on the current server, but I am trying to write code that is server instance independent.
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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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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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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Jun 13, 2006
I am using SQL Server 2005 and trying to create a linked server on Oracle 10. I used the commands below:
EXEC sp_addlinkedserver
@server = 'test1',
@srvproduct = 'Oracle',
@provider = 'MSDAORA',
@datasrc = 'testsource'
exec sp_addlinkedsrvlogin
@rmtsrvname = 'test1',
@useself = 'false',
@rmtuser='sp',
@rmtpassword='sp'
When I execute
select * from test1...COUNTRY
I get the error. "The OLE DB provider "MSDAORA" for linked server "...." does not contain the table "COUNTRY". The table either does not exist or the current user does not have permissions on that table."
The 'sp' user I am connecting is the owner of the table. What could be the problem ?
Thanks a lot.
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Jan 31, 2008
I have created a table Table with name as Varchar and id as int. Now i have started inserting the rows like, insert into Table values ('arun',20).Yes i have inserted a row in the table. Now i have got the values " arun's ", 50. insert into Table values('arun's',20) My sqlserver is giving me an error instead of inserting the row. How will you solve this problem?
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Mar 29, 2007
Hi
I am having a table called as status ,in that table one field is there i.e. currentstatus.
the rows which are having currentstatus as "ticket closed",i want to move those rows into other table called repository which is having same table structure as status table.
I can do programatically.
but is there any way for every 3 months system has to check and do this action means moving to repository table automatically?
Please help me.
Thanks.
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Jul 24, 2015
I'm inserting from TempAccrual to VacationAccrual . It works nicely, however if I run this script again it will insert the same values again in VacationAccrual. How do I block that? IF there is a small change in one of the column in TempAccrual then allow insert. Here is my query
INSERT INTO vacationaccrual
(empno,
accrued_vacation,
accrued_sick_effective_date,
accrued_sick,
import_date)
[Code] ....
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Nov 21, 2006
For reasons that are not relevant (though I explain them below *), Iwant, for all my users whatever privelige level, an SP which createsand inserts into a temporary table and then another SP which reads anddrops the same temporary table.My users are not able to create dbo tables (eg dbo.tblTest), but arepermitted to create tables under their own user (eg MyUser.tblTest). Ihave found that I can achieve my aim by using code like this . . .SET @SQL = 'CREATE TABLE ' + @MyUserName + '.' + 'tblTest(tstIDDATETIME)'EXEC (@SQL)SET @SQL = 'INSERT INTO ' + @MyUserName + '.' + 'tblTest(tstID) VALUES(GETDATE())'EXEC (@SQL)This becomes exceptionally cumbersome for the complex INSERT & SELECTcode. I'm looking for a simpler way.Simplified down, I am looking for something like this . . .CREATE PROCEDURE dbo.TestInsert ASCREATE TABLE tblTest(tstID DATETIME)INSERT INTO tblTest(tstID) VALUES(GETDATE())GOCREATE PROCEDURE dbo.TestSelect ASSELECT * FROM tblTestDROP TABLE tblTestIn the above example, if the SPs are owned by dbo (as above), CREATETABLE & DROP TABLE use MyUser.tblTest while INSERT & SELECT usedbo.tblTest.If the SPs are owned by the user (eg MyUser.TestInsert), it workscorrectly (MyUser.tblTest is used throughout) but I would have to havea pair of SPs for each user.* I have MS Access ADP front end linked to a SQL Server database. Forreports with complex datasets, it times out. Therefore it suit mypurposes to create a temporary table first and then to open the reportbased on that temporary table.
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Jan 9, 2008
Hi all,
The following dbo.Tables of Northwind.mdf in my .SQLEXPRESS (SQL Server Management Studio Express) are missing:
dbo.Categories
dbo.CustomerCustomerDemo
dbo.CustomerDemographics
dbo.Customers
dbo.Employees
dbo.EmployeeTerritories
dbo.Order Details
dbo.Orders
dbo.Products
dbo.Regions
dbo.Shippers
dbo.Suppliers
dbo.Territories.
But, I have these dbo.Tables in a different Database "xyzDatabase". How can I copy each of these dbo.Tables to the another blank dbo.Table of Northwind Database?
I right clicked on the dbo.Categories and I saw the following thing:
dbo.Categories
New Table...
Modify
Open Table
Script Table as |> CREATYE To |>
DROP To |>
SELECT To |>
INSERT To |> New Query Editor Window
File....
Clipboard
UPDATE To |>
DELETE to |>
From the above observation,I think it is possible to copy the dbo.Table from the one Database to the Northwind Database that needs to be repaired. Please help and advise me how to do this task or tell me where I can find the Microsoft document that gives the details of this X-copy thing.
Thanks in advance,
Scott Chang
P. S. I am using VB 2005 Express to create a project to learn "Calling Stored Procedures with ADO.NET" (see Paul Kimmel's article in http://www.developer.com/db/article.php/3438221) that needs the dbo.Tables of Northwind Database and my Northwind Database has been screwed up for quite a while and needs a big repair.
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Aug 29, 2007
which is more efficient...which takes less memory...how is the memory allocation done for both the types.
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May 29, 2008
'****************************************************************************
Cmd.CommandText = "Drop Table Raj"
Cmd.ExecuteNonQuery()
Cmd.CommandText = "Select * Into Raj From XXX"
Cmd.ExecuteNonQuery()
'**************************************************************************
This generates error that Table already exist.
If Wait 1 sec then execute statement then it works fine.
Thanks in Advance
Piyush Verma
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Dec 1, 2006
I have one control table to store all related table name
Table ID TableName
1 TableA
2 TableB
In Table A:
RecordID Value
1 1
2 2
3 3
In Table B:
RecordID Value
1 1
2 2
3 3
How can I get the result by select the Table list first and then combine the data in table A and table B?
Thank you!
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Jan 26, 2006
Just wondering if there is an easy transact statement to copy table 1 to table 2, appending the data in table 2.with SQL2000, thanks.
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Mar 20, 2008
Hi thanks for looking at my question
Using sqlServer management studio 2005
My Tables are something like this:
--Table 1 "Employee"
CREATE TABLE [MyCompany].[Employee](
[EmployeeGID] [int] IDENTITY(1,1) NOT NULL,
[BranchFID] [int] NOT NULL,
[FirstName] [varchar](50) NOT NULL,
[MiddleName] [varchar](50) NOT NULL,
[LastName] [varchar](50) NOT NULL,
CONSTRAINT [PK_Employee] PRIMARY KEY CLUSTERED
(
[EmployeeGID]
)
GO
ALTER TABLE [MyCompany].[Employee]
WITH CHECK ADD CONSTRAINT [FK_Employee_BranchFID]
FOREIGN KEY([BranchFID])
REFERENCES [myCompany].[Branch] ([BranchGID])
GO
ALTER TABLE [MyCompany].[Employee] CHECK CONSTRAINT [FK_Employee_BranchFID]
-- Table 2 "Branch"
CREATE TABLE [Mycompany].[Branch](
[BranchGID] [int] IDENTITY(1,1) NOT NULL,
[BranchName] [varchar](50) NOT NULL,
[City] [varchar](50) NOT NULL,
[ManagerFID] [int] NOT NULL,
CONSTRAINT [PK_Branch] PRIMARY KEY CLUSTERED
(
[BranchGID]
)
GO
ALTER TABLE [MyCompany].[Branch]
WITH CHECK ADD CONSTRAINT [FK_Branch_ManagerFID]
FOREIGN KEY([ManagerFID])
REFERENCES [MyCompany].[Employee] ([EmployeeGID])
GO
ALTER TABLE [MyCompany].[Branch]
CHECK CONSTRAINT [FK_Branch_ManagerFID]
--Foreign IDs = FID
--generated IDs = GID
Then I try a simple single row DELETE
DELETE FROM MyCompany.Employee
WHERE EmployeeGID= 39
Well this might look like a very basic error:
I get this Error after trying to delete something from Table €œEmployee€?
The DELETE statement conflicted with the
REFERENCE constraint "FK_Branch_ManagerFID".
The conflict occurred in database "MyDatabase",
table "myCompany.Branch", column 'ManagerFID'.
Yes what I€™ve been doing is to deactivate the foreign key constraint, in both tables when performing these kinds of operations, same thing if I try to delete a €œBranch€? entry, basically each entry in €œbranch€? and €œEmployee€? is child of each other which makes things more complicated.
My question is, is there a simple way to overcome this obstacle without having to deactivate the foreign key constraints every time or a good way to prevent this from happening in the first place? Is this when I have to use €œON DELETE CASCADE€? or something?
Thanks
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Sep 17, 2007
In a table-valued UDF, does the UDF use a table variable or a temp table to form the resultset returned?
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Nov 29, 2006
Banti writes "IF i create temporary table by using #table and ##table then what is the difference. i found no difference.
pls reply.
first:
create table ##temp
(
name varchar(25),
roll int
)
insert into ##temp values('banti',1)
select * from ##temp
second:
create table #temp
(
name varchar(25),
roll int
)
insert into #temp values('banti',1)
select * from #temp
both works fine , then what is the difference
waiting for ur reply
Banti"
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