Union Clause

May 15, 2004

sql = "Select c1 from t1


sql = sql & " Union Select c1 from t2 Order By c1"





t1=c1 = 1,2,3


t2=c1 = 200,5,300





datatype=nvarchar





result is not ordered as 1,2,3,4,200,300 why

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Transact SQL :: How To Create UNION Clause With Two Queries That BOTH Have WHERE Clause

Nov 4, 2015

I have a quite big SQL query which would be nice to be used using UNION betweern two Select and Where clauses. I noticed that if both Select clauses have Where part between UNION other is ignored. How can I prevent this?

I found a article in StackOverflow saying that if UNION has e.g. two Selects with Where conditions other one will not work. [URL] ....

I have installed SQL Server 2014 and I tried to use tricks mentioned in StackOverflow's article but couldn't succeeded.

Any example how to write two Selects with own Where clauses and those Selects are joined with UNION?

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UNION With WHERE Clause?

Jun 19, 2012

I have 2 tables(Customer,Staff) with the same column name 'email'. I would like to join both tables together where email="xxx@xx.com" to check if email exist already in the database. I have tried

Code:
Select email from (select email from staff union select email from customer) as 'CombinedEmail' where email = 'xxx@xx.com'

But it does not work at all. Is there anything wrong with my codes?

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Top Clause , Union And Order By

Dec 7, 2007

Hi,

I'm currently have a problem with a query using a top clause. When I run it by itself as a single query, I have no problems and the results are valid. However, if I try duplicate the query after a union clause, the order by ... desc doesn't order properly.

The following is the query I'm using along with the results. Then I'll have the query I was trying to unite and the results (date ranges selected were the same in both):

QUERY 1

select top 1 (s.ldate), v.mdtid, po.odometer, pi.odometer, (pi.odometer-po.odometer) as 'Total Miles'

from EventStrings ES

JOIN schedules s
ON ES.SchId=S.SchId
JOIN vehicles v
ON v.vehicleid=es.vehicleid
JOIN Events PO
ON PO.schid=es.schid
AND PO.EvStrId=ES.EvStrId
AND po.activity=4
JOIN Events PI
ON PI.schid=es.schid
AND PI.EvStrId=ES.EvStrId
AND pi.activity=3

WHERE es.providerid in (0,1,4)
and s.ldate>=?
and s.ldate<=?
and v.mdtid=20411

order by s.ldate desc


RESULTS 1

DATE MDT IDPU Odometer DO Odometer Total Miles
12/6/2007 2041112810.6 12874.5 63.9

QUERY 2 (with Union)

select top 1 (s.ldate), v.mdtid, po.odometer, pi.odometer, (pi.odometer-po.odometer) as 'Total Miles'

from EventStrings ES

JOIN schedules s
ON ES.SchId=S.SchId
JOIN vehicles v
ON v.vehicleid=es.vehicleid
JOIN Events PO
ON PO.schid=es.schid
AND PO.EvStrId=ES.EvStrId
AND po.activity=4
JOIN Events PI
ON PI.schid=es.schid
AND PI.EvStrId=ES.EvStrId
AND pi.activity=3

WHERE es.providerid in (0,1,4)
and s.ldate>=[From Date,Date]
and s.ldate<=[To Date,Date]
and v.mdtid=20411

Union

select top 1 (s.ldate), v.mdtid, po.odometer, pi.odometer, (pi.odometer-po.odometer) as 'Total Miles'

from EventStrings ES

JOIN schedules s
ON ES.SchId=S.SchId
JOIN vehicles v
ON v.vehicleid=es.vehicleid
JOIN Events PO
ON PO.schid=es.schid
AND PO.EvStrId=ES.EvStrId
AND po.activity=4
JOIN Events PI
ON PI.schid=es.schid
AND PI.EvStrId=ES.EvStrId
AND pi.activity=3

WHERE es.providerid in (0,1,4)
and s.ldate>=?
and s.ldate<=?
and v.mdtid=2642

order by s.ldate desc

RESULTS 2

DATE MDT ID PU OdometerDO Odometer Total Miles
4/10/2007 20411 1207.21252.5 45.3
1/2/2007 2642 193652.6193817 164.4

As you can see, the results are sorted very differently. Is there any way to have the order by apply to both queries?

Thanks!
Craig

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Using Group By Clause In Union Query

Sep 19, 2007

Hi all,

I have two table having datas like

Table1
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 0 3 2
x 0 1 0 2
x 0 0 2 1
y 1 5 2 0


Table2
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 0 1 4
y 1 0 3 1
y 1 2 0 0
y 0 0 5 1

select * from(
select A,C1,C2,C3,C4 from Table1 group by A
union
select A,C1,C2,C3,C4 from Table2 group by A
)as t

Result:
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 1 5 5
y 1 5 2 0
x 0 0 1 4
y 2 2 8 2

But i need the result like i.e grouped by column 'A'
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 1 6 9
y 3 7 10 2

select * from(
select A,C1,C2,C3,C4 from Table1 group by A
union
select A,C1,C2,C3,C4 from Table2 group by A
)as t group by A

The above query gives the following error
[Error Code: 8120, SQL State: S1000] Column 't.C1' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Please help me out.

-Anand

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T-SQL (SS2K8) :: Using Union ALL Or Union Kills Performance On Stored Proc

Jun 12, 2014

SQL Server 2008 r2...

I have a query which does 3 selects and Union ALLs each to get a final result set. The performance is unacceptable - takes around a minute to run. If I remove the Union All so that the result sets are returned individually it returns all 3 from the query in around 6 seconds (acceptable performance).

Any way to join the result sets together without using Union All.

Each result set has exactly the same structure returned...

Query below [for reference]...

WITH cte AS (
SELECT A.[PoleID], ISNULL(B.[IsSpanClear], 0) AS [IsSpanClear], B.[SurveyDate], ROW_NUMBER() OVER (PARTITION BY A.[PoleID] ORDER BY B.[SurveyDate] DESC) rownum
FROM[UT_Pole] A
LEFT OUTER JOIN [UT_Surveyed_Pole] B ON A.[PoleID] = B.[PoleID]

[Code] .....

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How Does Union/union All Work Inside SQL Server?

Apr 29, 2008



Why the sequence different?



select * from (

select id=3,[name]='Z'

union all select 1,'G'

union all select 2,'R'

union all select 4,'Z'

) as t

order by [name]

--result:

---------

--1 G

--2 R

--4 Z

--3 Z

select * from (

select id=3,[name]='Z'

union select 1,'G'

union all select 2,'R'

union all select 4,'Z'

) as t

order by [name]

--result:

----------

--1 G

--2 R

--3 Z--changed

--4 Z

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Union All Does Not Union All Rows

Nov 6, 2006

Hi all,

I have a Union All transformation with 4 inputs and one output when I debug the package the sum of the different inputs rows does not match the row count in output.

I don't understand, I've used the Union All transform many times and I've never seen this.

Any idea why this could happen ?

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GROUP By Clause Or DISTINCT Clause

Jul 23, 2005

Hi, can anyone shed some light on this issue?SELECT Status from lupStatuswith a normal query it returns the correct recordcountSELECT Status from lupStatus GROUP BY Statusbut with a GROUP By clause or DISTINCT clause it return the recordcount= -1

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Filtering Results In The Where Clause Vs A Having Clause

Oct 25, 2007

I am working with a vendor on upgrading their application from SQL2K to SQL2K5 and am running into the following.

When on SQL Server 2000 the following statement ran without issue:

UPDATE dbo.Track_ID

SET dbo.Track_ID.Processed = 4 --Regular 1 leg call thats been completed

WHERE Processed = 0 AND LegNum = 1

AND TrackID IN

(


SELECT TrackID

FROM dbo.Track_ID

GROUP BY TrackID

HAVING MAX(LegNum) = 1 AND


TrackID + 'x1' IN


(


SELECT

dbo.Track_ID.TrackID + 'x' + CONVERT(NVARCHAR(2), COUNT(dbo.Track_ID.TrackID))

FROM dbo.Track_ID INNER JOIN dbo.transactions


ON dbo.Track_ID.SM_ID = dbo.transactions.sm_session_id

GROUP BY dbo.Track_ID.TrackID

)

)
Once moved to SQL Server 2005 the statement would not return and showed SOS_SCHEDULER_YIELD to be the waittype when executed. This machine is SP1 and needs to be upgraded to SP2, something that is not going to happen near time.

I changed the SQL to the following, SQL Server now runs it in under a second, but now the app is not functioning correctly. Are the above and the following semantically the same?


UPDATE dbo.Track_ID

SET dbo.Track_ID.Processed = 4 --Regular 1 leg call thats been completed

WHERE Processed = 0 AND LegNum = 1

AND TrackID IN
(



SELECT TrackID

FROM dbo.Track_ID

WHERE TrackID + 'x1' IN


(


SELECT dbo.Track_ID.TrackID + 'x' + CONVERT(NVARCHAR(2), COUNT(dbo.Track_ID.TrackID))

FROM dbo.Track_ID INNER JOIN dbo.transactions


ON dbo.Track_ID.SM_ID = dbo.transactions.sm_session_id

GROUP BY dbo.Track_ID.TrackID

)
GROUP BY TrackID

HAVING MAX(LegNum) = 1

)

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Expression Defined In SELECT Clause Overwrites Column Defined In FROM Clause

May 14, 2008

2 examples:

1) Rows ordered using textual id rather than numeric id


Code Snippet
select
cast(v.id as nvarchar(2)) id
from
(
select 1 id
union select 2 id
union select 11 id
) v
order by
v.id






Result set is ordered as: 1, 11, 2
I expect: 1,2,11


if renamed or removed alias for "cast(v.id as nvarchar(2))" expression then all works fine.

2) SQL server reject query below with next message

Server: Msg 169, Level 15, State 3, Line 16
A column has been specified more than once in the order by list. Columns in the order by list must be unique.




Code Snippet
select
cast(v.id as nvarchar(2)) id
from
(
select 1 id
union select 2 id
union select 11 id
) v
cross join (
select 1 id
union select 2 id
union select 11 id
) u
order by
v.id
,u.id




Again, if renamed or removed alias for "cast(v.id as nvarchar(2))" expression then all works fine.

It reproducible on

Microsoft SQL Server 2000 - 8.00.2039 (Intel X86) May 3 2005 23:18:38 Copyright (c) 1988-2003 Microsoft Corporation Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 2)


and


Microsoft SQL Server 2005 - 9.00.3042.00 (Intel X86) Feb 9 2007 22:47:07 Copyright (c) 1988-2005 Microsoft Corporation Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 2)

In both cases database collation is SQL_Latin1_General_CP1251_CS_AS

If I check quieries above on database with SQL_Latin1_General_CP1_CI_AS collation then it works fine again.

Could someone clarify - is it bug or expected behaviour?

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ERROR [42000] [Lotus][ODBC Lotus Notes]Table Reference Has To Be A Table Name Or An Outer Join Escape Clause In A FROM Clause

May 27, 2008

I am using web developer 2008, while connecting to I wanted to fetch data from Lotus notes database file, for this i used notesql connector, while connectiong to notes database i am fetting error


ERROR [42000] [Lotus][ODBC Lotus Notes]Table reference has to be a table name or an outer join escape clause in a FROM clause


I have already checked that database & table name are correct, please help me out
How i can fetch the lotus notes data in my asp.net pages.

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ERROR [42000] [Lotus][ODBC Lotus Notes]Table Reference Has To Be A Table Name Or An Outer Join Escape Clause In A FROM Clause

May 27, 2008

I am using web developer 2008, while connecting to I wanted to fetch data from Lotus notes database file, for this i used notesql connector, while connectiong to notes database i am fetting error


ERROR [42000] [Lotus][ODBC Lotus Notes]Table reference has to be a table name or an outer join escape clause in a FROM clause


I have already checked that database & table name are correct, please help me out
How i can fetch the lotus notes data in my asp.net pages.

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Having Clause Without GROUP BY Clause?

Nov 20, 2004

Hi,

What is HAVING clause equivalent in the following oracle query, without the combination of "GROUP BY" clause ?

eg :

SELECT SUM(col1) from test HAVING col2 < 5

SELECT SUM(col1) from test WHERE x=y AND HAVING col2 < 5

I want the equivalent query in MSSQLServer for the above Oracle query.

Also, does the aggregate function in Select column(here the SUM(col1)) affect in anyway the presence of HAVING clause?.

Thanks,
Gopi.

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Top Clause With GROUP BY Clause

Apr 3, 2008

How Can I use Top Clause with GROUP BY clause?

Here is my simple problem.

I have two tables

Categories
Products

I want to know Top 5 Products in CategoryID 1,2,3,4,5

Resultset should contain 25 Rows ( 5 top products from each category )

I hope someone will help me soon.
Its urngent


thanks in advance

regards
Waqas

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Diff In On Clause And Where Clause?????

Apr 4, 2007

hi..
i have basic question like

what is differance between conditions put in ON clause and in WHERE clause in JOINS????

see conditions that shown in brown color

select d1.SourceID, d1.PID, d1.SummaryID, d1.EffectiveDate,
d1.Audit, d1.ExpirationDate, d1.Indicator
from[DB1].[dbo].[Implicit] d1 inner join [DB2].[dbo].[Implicit] d2
on d1.SummaryID=d2.SummaryID
AND d1.ListType = d2.ListType
AND (d1.EffectiveDate <= d2.ExpirationDate or d2.ExpirationDate is null)
AND (d1.ExpirationDate >= d2.EffectiveDate or d1.ExpirationDate is null)
whered1.ImplicitID >= d2.ImplicitID AND
(d1.SourceID<>d2.SourceID
OR (d1.SourceID IS NULL AND d2.SourceID IS NOT NULL)
OR (d1.SourceID IS NOT NULL AND d2.SourceID IS NULL)
)


select d1.SourceID, d1.PID, d1.SummaryID, d1.EffectiveDate,
d1.Audit, d1.ExpirationDate, d1.Indicator
from[DB1].[dbo].[Implicit] d1 inner join [DB2].[dbo].[Implicit] d2
on d1.SummaryID=d2.SummaryID
AND d1.ImplicitID = d1.ImplicitIDAND d1.ListType = d2.ListType
AND (d1.EffectiveDate <= d2.ExpirationDate or d2.ExpirationDate is null)
AND (d1.ExpirationDate >= d2.EffectiveDate or d1.ExpirationDate is null)
whered1.ImplicitID >= d2.ImplicitID AND
(d1.SourceID<>d2.SourceID
OR (d1.SourceID IS NULL AND d2.SourceID IS NOT NULL)
OR (d1.SourceID IS NOT NULL AND d2.SourceID IS NULL)
)

another thing...

if we put AND d1.ImplicitID = d1.ImplicitID condition in second query then shall we remove
d1.ImplicitID >= d2.ImplicitID from WHERE clause????

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SQL Inner Join Clause And The Where Clause

Jan 21, 2008

Hi everyone,
I saw some queries where SQL inner join clause and the where clause is used at the same time. I knew that "on" is used instead of the "where" clause. Would anyone please exaplin me why both "where" and "on" clause is used in some sql Select queries ?

Thanks

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DTS - UNION

Jan 23, 2001

Hi,

I am using DTS to import data where the query involves the UNION .

Select a,z,y from x
UNION
select b,z,y from y;

Only the columns Z,y appearing in the output. Is there any known problem with UNION in DTS?

Thanks

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Union -- Union All

Dec 3, 2004

Help me again . :) ..
Query :

Select 1 AS ColA, ColB,ColC
FROM Table1
Where ColA = 1
Union
Select 2 AS ColA, ColB,ColC
FROM Table1
Where ColA = 2

Expected Result.
ColA ColB ColC
1 Apple Sweet
1 Wine Alcohol
2 Home Nice
2 Travel Fun

But gives
ColA ColB ColC
1 Apple Sweet
1 Wine Alcohol
1 Home Nice
1 Travel Fun

any suggestions .please reply.

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Union In MDX

Mar 23, 2007

Could someone explain me Union function in MDX? How is different from the T-SQL Union?

My need is urgent.

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Union

Jul 12, 2004

i have a table with country names

table name:country
column name:country
it is populated with:
UK
USA
africa
asia
japan

i want a query which gives the foll output
USA
UK
africa
asia
japan


(i.e) USA and UK must be on the top 2 rows
while the rest of the countries should come below these 2 and sorted in the ascending order.

if it is possible with any other query also it is ok

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Use TOP With UNION

Jul 14, 2004

Hi

I just found out that I can do an ORDER BY clause on entire records set retrieve from a query that combines several sub queries with UNION from different tables with the same structure... so this is great to know, BTW, is this a new feature of MSSQL 2K ? I don't recall being able to do this in MSSQL 7 or 6.5.

Anyway, the main question is, can I use the TOP command in a query that has UNION in it?? Meaning, there are two queries (or more) from two tables (or more) and I need to fetch the top 10 records by an ORDER BY clause from the combined results, when I try to add each sub query TOP 10 the results are not correct at all, when I try to add TOP 10 only to the first query hoping that the analyzer will refer to the whole query, it's selecting TOP 10 from the first query and combines it with all the records from the others...

So, can anyone help? I hope the problem is understood.

Thank you,
Inon.

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Need Help With UNION And SUM

Nov 8, 2004

Hi!

I am trying to join to different queries into one table ( I accomplished this)

Next I need to ADD or SUM the results of 2 rows to form a single row.

As you can see in the query below, I run 2 separate queries and use ' ' as a place holder for the UNION to work. I get duplicate rows, one with a value and the other with a '0'. I want to have a single row.

Any help is greatly appreciated!

(SELECT
v_gs_supportedpackages.ProdID0 as 'Product Name',
v_RA_System_SMSInstalledSites.SMS_Installed_Sites0 as 'Site',
Count(ProdID0) as '# copies installed',
'' as '# legitimate copies installed'

FROM
v_R_System SYS,
v_GS_Workstation_Status HWSCAN,
v_gs_SupportedPackages
inner join
v_RA_System_SMSInstalledSites on v_RA_System_SMSInstalledSites.ResourceID = v_gs_SupportedPackages.ResourceID

WHERE
SYS.ResourceId = HWSCAN.ResourceId
AND
SYS.ResourceId = v_gs_SupportedPackages.ResourceId
AND
v_gs_supportedpackages.ProdID0 = substring('MS Security Patch MS04-030,031,032,034,037,038',1,60)

GROUP BY

v_gs_supportedpackages.ProdID0,
v_RA_System_SMSInstalledSites.SMS_Installed_Sites0 )

UNION

(SELECT
v_gs_supportedpackages.ProdID0 as 'Product Name',
v_RA_System_SMSInstalledSites.SMS_Installed_Sites0 as 'Site',
'' as '# copies installed',
Count(ProdID0) as '# legitimate copies installed'

FROM
v_R_System SYS,
v_GS_Workstation_Status HWSCAN,
v_gs_SupportedPackages
inner join
v_RA_System_SMSInstalledSites on v_RA_System_SMSInstalledSites.ResourceID = v_gs_SupportedPackages.ResourceID

WHERE
SYS.ResourceId = HWSCAN.ResourceId
AND
SYS.ResourceId = v_gs_SupportedPackages.ResourceId
AND
v_gs_supportedpackages.ProdID0 = substring('MS Security Patch MS04-030,031,032,034,037,038',1,60)
AND
DateDiff(Day,HWSCAN.LastHWScan,GetDate()) <= '20'

GROUP BY

v_gs_supportedpackages.ProdID0,
v_RA_System_SMSInstalledSites.SMS_Installed_Sites0 )

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UNION Vs UNION ALL

Dec 15, 2006

Just a pet peeve....

From BOL:


By default, the UNION operator removes duplicate rows from the result set.
If you use ALL, all rows are included in the results and duplicates are not
removed.



Why is it assumed that one would want the duplicates removed by default?
Isn't that what SELECT DISINCT is for?

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Union

Mar 18, 2004

I was wondering if there is a way I could write this query as one query using union instead of 3 different queries?

SELECT columna as column,count(ID) as Applications
FROM tablea
GROUP columna


SELECT columna as column2, count(ID) as Approved
FROM tablesa where substring(APP_DATE,1,6) >'200304' and in 'Approved')
GROUP BY columna

SELECT columna as column3, count(ID) as Booked, sum(AMT) as amt, sum(AMT)/count(ID) as lavg
from tablea where substring(APP_DATE,1,6) >'200304' and STATUS in('book')
group by columna

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UNION Vs UNION ALL

Apr 22, 2008

Hi All,

I am doing a UNION of 8 views(with 3 million rows in each view approx). I am sure that there is NO DUPLICATE data between the views. SO specifying a UNION ALL would be better than specifying a UNION in this case?

Thanks!

Prakash.P
The secret to creativity is knowing how to hide your sources!

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Union

Jun 20, 2008

Hi folks,
I have a question about the performance of the following query:

(SELECT name, lastName
from Data
where salary >= 2200
)
union

(SELECT name, lastName
from Data
where salary >= 2200
) union

(SELECT name, lastName
from Data
where salary >= 2200
)

How that query works? Is it slow for a larger data? Does it do 3 queries and then combine them?

Thank you.

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Union

Feb 11, 2008

Hi All
I want to do the following report and I want the 2nd select statement to appear at the bottom to display the totals


SELECT Item,B.Mar, B.Apr, B.May, B.Jun,B.Jul, B.Aug, B.Sep, B.Oct, B.Nov, B.Dec, B.Jan
FROM fncWineSales(2007) AS A
UNION
SELECT 'Total',SUM(B.Mar), SUM(B.Apr), SUM(B.May), SUM(B.Jun),SUM(B.Jul), SUM(B.Aug), SUM(B.Sep), SUM(B.Oct), SUM(B.Nov), SUM(B.Dec), SUM(B.Jan)
FROM dbo.fncWineSales (2007) AS B


thanx in advance

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Other Than UNION

Jul 23, 2005

Hello,Bear with me (not had much sleep last night), pls see following ddl,dml and comments for what is desired, I don't have a problem gettingdesired result(s), however, I'm wondering if there's another (better)solution than UNION operator in this case. TIA.-- DDLCREATE TABLE #TMP (col varchar(10));-- DMLinsert into #TMPvalues('A124');insert into #TMPvalues('A127');insert into #TMPvalues('A12728');insert into #TMPvalues('A17282');insert into #TMPvalues('BCD');insert into #TMPvalues('BCD');insert into #TMPvalues('CDSS');insert into #TMPvalues('DS');insert into #TMPvalues('YUUEI');-- goal: get one row with col data starting with 'A' and distict rowsfor the restselect top 1 colfrom #TMPwhere col LIKE 'A%'UNIONselect distinct colfrom #TMPwhere col NOT LIKE 'A%'

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Sum A Union

Jul 20, 2005

Hi,I can return results of a union easily enough, but I wish to sum the recordsfirst. Is this possible in a single SQL statement? Or do I have to useseparate ones to sum up after the union?Cheers,Chris

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T-SQL UNION With Sum

Aug 20, 2007

Why if run this script, Always Incorrect syntax near the keyword 'group'.
somebody helpme, how to sum the union script

SELECT NUMMSTR3, sum(qty), sum (AP)
FROM (

SELECT c.NUMMSTR3, count(*) qty,sum(a.DEBIT) DEBIT,sum(a.CRDT) CRDT,Sum(a.CRDT - a.DEBIT) AP

FROM MSTR1 a,MSTR2 b,MSTR3 c

where a.IDMSTR1 = b.IDMSTR1

and a.KDMSTR1 = c.KDMSTR3

and c.NUMMSTR3 = '21010100'

and year(b.TRXDATE) <= '2007'

group by c.NUMMSTR3
UNION ALL

SELECT c.NUMMSTR3, count(*) jml,sum(a.DEBIT) DEBIT,sum(a.CRDT) CRDT,Sum(a.CRDT - a.DEBIT) AP

FROM HISTR4 d,MSTR3 c

where d.KDHISTR4 = c.KDMSTR3

and c.NUMMSTR3 = '21010100'

group by c.NUMMSTR3
) group by NUMMSTR3

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UNION

Jul 5, 2006

Of the two queries below, the first returns the desired result, the union of the select-except statments.  Why doesn't the second query return the same result as the first? Is this a mistake/bug on Microsofts side?

 

select * from

(select * from TEST1

EXCEPT

select * from TEST2) AS A

UNION

select * from (select * from TEST2

EXCEPT

select * from TEST1) AS B

 

 

 

select * from TEST1

EXCEPT

select * from TEST2

UNION

select * from TEST2

EXCEPT

select * from TEST1

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Union All

Sep 3, 2006

When any changes have been made to the underlying table structure, the Union all reports error and does not automatically correct the error. I then have to delete it and recreate it. Is this a bug?

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