Using LIMIT And UNION Together

Jul 22, 2013

I have a extremely large table and out of that I just need 2 records but based on some logic . For example

IF EMPLOYEE_ADDRESS <> NULL
set Employee_HAS_HOME to 1
ELSE
set Employee_HAS_HOME to 0

Here I can not use just first 1000 records as I am not sure If I will cover the second condition in first 1000 rows . Then I came up with solution like : -

select * from employee_table where employee_address <> NULL LIMIT 1
UNION
select * from employee_table where employee_address = NULL LIMIT 1

And this will give me 2 records which I can use for my testing . But unfortunately this is not working.

View 6 Replies

Using LIMIT And UNION Together

Mar 19, 2008

hi,i have a union statement that works like a charm:SELECT
[Name],
[EventID] AS [ItemID],
[TourID],
[Date],
NULL AS [StartDate],
[Date] AS [SortDate],
[Type] FROM [Events]
WHERE
[TourID] IS NULL
AND
AccessLevel <= @AuthenticationLevel

UNION

SELECT
[Name],
[TourID] AS [ItemID],
[TourID],
NULL AS [Date],
[StartDate],
[StartDate] AS [SortDate],
'2' AS [Type]
FROM
[Tours]
WHERE
AccessLevel <= @AuthenticationLevel

ORDER BY
[SortDate] this statement selects all the records i want from both tables, and orders the entire new table by sort date.what i want to do is to add a limitation on the number of records. i have tried using both LIMIT and TOP commands, but i can't get it working. both of the below statements give me a syntax error saying "Incorrect syntax near the keyword 'ORDER'"first try:SELECT * FROM (<same_statement_as_above>) ORDER BY [SortDate] LIMIT 2second try:SELECT TOP 2 * FROM (<same_statement_as_above>) ORDER BY [SortDate]what am i doing wrong, and how do i achieve what i want?i am working with mssql server 2005 (express locally, and standard on my hosting service). thanks for your help!

View 2 Replies View Related

Limit And Order In Union Statement

Mar 18, 2008

hi all,

i have the following union statement, which works like a charm:SELECT [Name], [EventID] AS [ItemID], [TourID], [Date], NULL AS [StartDate], [Date] AS [SortDate], [Type] FROM [Events] WHERE [TourID] IS NULL AND AccessLevel <= @AuthenticationLevel UNION SELECT [Name], [TourID] AS [ItemID], [TourID], NULL AS [Date], [StartDate], [StartDate] AS [SortDate], '2' AS [Type] FROM [Tours]WHERE AccessLevel <= @AuthenticationLevel ORDER BY [SortDate]

now i want to ad a limit to this statement, but i can't get it working. i have tried this:SELECT * FROM (SELECT [Name], [EventID] AS [ItemID], [TourID], [Date], NULL AS [StartDate], [Date] AS [SortDate], [Type] FROM [Events] WHERE [TourID] IS NULL AND AccessLevel <= @AuthenticationLevel UNION SELECT [Name], [TourID] AS [ItemID], [TourID], NULL AS [Date], [StartDate], [StartDate] AS [SortDate], '2' AS [Type] FROM [Tours]WHERE AccessLevel <= @AuthenticationLevel) ORDER BY [SortDate] LIMIT 2
but i keep getting an error message saying "Incorrect syntax near the keyword "ORDER". what am i doing wrong?

-bm

View 6 Replies View Related

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] .....

View 4 Replies View Related

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

View 3 Replies View Related

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 ?

View 18 Replies View Related

Limit Of DTS?

Jul 6, 2004

Hi there guys!

I was wondering if anyone know the number of rows you can import from an external source into MS SQL Server 2000 Developer Edition?

I have tried importing a whole table from another database with over a million records. But failed after 1.7 million row.

Any ideas?

Thank you!

View 1 Replies View Related

2 GIG Limit

Aug 6, 1998

When creating a database, SQL Server 6.5 seems to have a 2 gig limit. What I mean is that if the device chosen is over 2 gigs SQL Server displays the size of the device as anegative number. This prevents me from being able to expand the database when I need to. Can anyone tell me why this is so, and if there`s anyway around it??

View 1 Replies View Related

Help In Limit

Feb 21, 2006

we all know
mysql: select * from table limit ?1, ?2

equals

sqlserver: SELECT TOP ?2 *
FROM table WHERE (IDENTITYCOL NOT IN
(SELECT TOP ?1 IDENTITYCOL
FROM table order by IDENTITYCOL))
order by IDENTITYCOL

but the below SQL in mysql,how to convert?I enmesh...........
select pageid,pagename,pageaddr,pageauditflag,pageartaudi tflag,startplaytime
from pageinfo where entryid= ?1 and startplaytime= ?2
limit ?3, ?4

thanks!

View 14 Replies View Related

LIMIT In MS SQL ??!!

Jul 20, 2005

hi,I have a question.Maybe You know the equivalent to command LIMIT from MySQLI couldn`t find something like this in MS SQLPSI try to display 10 records begining form e.g. 4 sort by idsomething like: "SELECT * FROM table WHERE name=... LIMIT 4, 10 ORDER BY id"in MySQLthanx,Urban

View 2 Replies View Related

4gb Limit

Mar 26, 2007

Hi There

I recently read up and found an msdn forum post that said the 4gb limit only applied to data files not log files.

However recently i had an error on a sql express database saying that the log file was full, the database log file was set to auto grow and there was plenty of space left.

So i am guessing the 4gb limit applies to any database file mdf or ldf, is this correct ?

Thanx

View 5 Replies View Related

Limit Data

Jul 10, 2007

I have the fields in my table:
ID, Title, Description, Price, ImageData, Active
I only want it to be possible to have two records at any time with Active=Yes. Active is a Bit, Yes/No, field.
Any help is appreciated.
Chuck

View 5 Replies View Related

Connections Limit?

Dec 27, 2004

Hi,

I have an application with a DAL that has an interface with SQL Server.
The application has 400 users that open the web forms.
My question is:
Is there a limit of the parallel connections that can be opened? Or the IIS is managing all the access to the DB? Should I worry about the performance Or it's normal behaviour for ASP.NET applications?

Thanks

View 1 Replies View Related

Permission Limit

Jul 13, 2001

hello everybody
I created user "MyUser " with rights
1. public for database "Orders"
2. select, update,delete, insert to table Orders.dbo.PersonalInfo

I have table Orders.dbo.PersonalInfoChangeLog
( it keeps information on any update on Orders.dbo.PersonalInfo including
HOST_NAME())

So I don't want anybody to see even structure of this table(Orders.dbo.PersonalInfo ).

if person loged as "Myuser" he can use
1. sp_help PersonalInfoChangeLog
2.Enterpise Manager to see properties of the table

How can limit rights to see structure without generating Application role ?

Thanks

View 2 Replies View Related

How To Limit SQL's CPU Usage

Jul 31, 2001

SQL takes all CPU resource on some of the intensive
queries. Is any way to make sure there is something left for other tasks
to be processed? Let's say limit SQL to use no more than 80% of CPU.

Thanks

View 3 Replies View Related

Query Limit

Sep 17, 2001

I was wondering if anyone out there can help me as to how to limit the query results to show only the authors who have written more than one book?

SELECT a.au_lname, au_fname, COUNT(t.title_id)
FROM pubs..authors a
INNER JOIN pubs..titleauthor t ON (a.au_id=t.au_id)
GROUP BY a.au_lname, au_fname

Regards,

View 1 Replies View Related

Limit In Sql Server

Aug 3, 2004

someone suggested I use:

select top 20 * from t
where pkc not in (select top 10 pkc from t order by pkc) order by pkc

to simulate the limit function in mysql.

i want to replace the 10 in the inner select with a variable. When I do this:

select top 20 * from t
where pkc not in (select top @counter pkc from t order by pkc) order by pkc

it gives me in an error in sproc. Pls help!!

View 1 Replies View Related

Row Limit In MSSQL

Sep 8, 2004

There is at present (as we accidently found) limitation of MSSQL to return per row maximally 8060 bytes. Message like this comes: "Cannot create a row of size 8279 which is greater than the allowable maximum of 8060".
My questions are :
- Is there any way how to pass it? If I split into more tables (as I have it now) and ask for result where these tables are connected over any ID the result is the same. If I use stored procedures it seems to be ok. Any other idea?
- Will be this ok in SQL server 2005?

View 14 Replies View Related

Limit Record

Jan 29, 2005

hi everybody,

Beside top statement what is the best statement used to limit the display the data?

Thanks...

View 4 Replies View Related

Limit The No. Of Users

Apr 17, 2006

I have an application that uses a small SQL Server database.
What I need is to prevent the access of an amount of users to the database.
At the beginning I want to limit the access only for 2 users but I want to be able in the future to grant the access to more.

View 5 Replies View Related

Is There An MS SQL Limit Function?

May 13, 2006

MySQL has a convenient syntax for paging data that looks like this:
SELECT * FROM MyTable LIMIT 10, 20
That would select 10 records, starting from record 20, so that it returns records 20 - 30. This is convenient way to page data, without returning anymore rows than than you need.

However, MS SQL doesn't appear to support that syntax. What is the equivalent sql code to select any N rows from an arbitrary starting point, without having to create a stored procedure?

Thanks in advance :)

View 8 Replies View Related

MS SQL Record Limit

Apr 19, 2004

Quick question, is there a record limit in MSSQL assuming that we don't use a identity key. I am going to be using a table to sava mail server logs. It will create about 5000 records a minute. Also are there any perfomrance issues once you reach a certain numberof records, assuiming i am indexing one of the columns.

View 4 Replies View Related

How To Limit The Records..?

Jun 5, 2007

Hi,
I am working on building SSIS Packages which will need to extract records from OLTP Servers, and i am half way through building the package, i wanted to test if it is able to extract the records from a particular table on OLTP....basicall i want to test if the package built so far running good?....but the extraction part takes ages as there are millions of records in the OLTP ...i want to limit those records to say some thousands so that i can test it and work on cleaning part in the staging and later after all the chunks are working perfectly i want to set it completely to run for extracting all the millions of records.

Any suggestion would be appreciated.

thanks
ravi

Nothing much that i can do..!!

View 3 Replies View Related

Column Limit

Nov 14, 2007

I am working on a report split into 2 Excel spreadsheets because it is roughtly 350 columns wide. I know this exceeds the MS Access column limit, but is there a way to build this in a single table in SQL Server? If not, does anyone have any ideas.

Thanks

View 4 Replies View Related

Limit Problem

Nov 20, 2007

I have a table tblclients where all my client information is. In my application, I can assign a client to a therapist which is simply inserting the client id (intclientId) into the table with the inttherapistId and the authorid was completed the transaction. because we want to know the history of the transfers, I have to have a separate table other wise I could have just crated a field in the client table for the therapist id.

Simply enough.

The problem is when I assign the client to a therapist more than once, on the client log (the screen that shows all my clients) the client appears twice- once for each therapist he has been assigned to. I only want the client to appear once- and show the name of the latest therapist he has been assigned to not all the therapist. The way I did the select was to do an left outer join on the tbltransfer based on the client id. Works but like I said it gives me the client twice, if I assign them to the therapist more than once. So here is my statement:

select c.strfirstname, c.strlastname, c.intlocationId from tblclients c left outer tbltransfer t on t.intclientId = c.intclientId

this works, but if I have more than one record for the same client in the tbltranfer (if I assign the client more than once) then the recordset that is returned contains two records- one for each therapist assigned and that my problem.

Any help would be appreciated.

View 1 Replies View Related

Sql Server Limit

Jul 20, 2005

I'm storing time series data in a table in SQL server 2000. The tablehas columns like: CodeEquity, PriceDate, LastPrice. To extract thelast price for a number of equities on COMMON DATES I have used thequery:select t.LastPrice,h1.LastPrice,h2.LastPrice,h3.LastPrice fromBlg_HistoricData t,Blg_HistoricData h1,Blg_HistoricDatah2,Blg_HistoricData h3where t.CodeEquity=114151 and h1.CodeEquity=112220 andt.PriceDate=h1.PriceDate and h2.CodeEquity=112580 andt.PriceDate=h2.PriceDate and h3.CodeEquity=112228 andt.PriceDate=h3.PriceDatethis works for about 20 self joined tables and then says syntax error.I'm wondering what sql limits it hits. Is it possible to do this inSQL for 300 tables?Thank you.

View 1 Replies View Related

Limit The Access

Jul 20, 2005

Hi, guys!Some of my applications are sharing same SQL login/password to connectto a database called "MyDB" on server "MyServer" . The password isencrypted and stored in registry or some configuration file theapplications use. The applications use certain arithmetic to decryptthe password and then connect to MyDB.The problem is a few developers know the arithmetic. So virtuallythere is no security here.I am wondering whether I can do anything on the MyServer/MyDB to limitthe access to the database so that only connection from certainservers are allowed. Say I only want connection with this knowncredential to be established if it is from server "Mybox". Noconnections from any other servers will be allowed. So even thedevelopers know the login/password, they won't be able to do anythingif they do have the access to server "MyBox".(I know some of you would ask why I don't use application roles. Let'ssay it's due to "historical" reasons and it's not totally up to me tochange the way the developers use database.)Any idea? Triggers in Master? Not a good idea, isn't it?Thanks in advance,Gary

View 3 Replies View Related

Limit CPU Per User

Mar 26, 2008

Does anyone know if there is a way to limit certain users/logins to only use 1 CPU on a box with 4 processors? I need to somehow restrict CPU utilization for a user and I'm wondering if this can even be done in SQL Server 2005. Any help would be appreciated.

View 1 Replies View Related

Any Movement On The 4 Gig Limit???

Aug 21, 2006

We're very interested in having our application use SQL/e but we can't have the 4 gig limit. It makes sense to me that SQL/e simply should not be able to access a file over the network, and then you wouldn't have any reason to put a 4 gig limit on it.

At that point it becomes a very flexible alternative for remote users that need to have a large amount of data (i.e. documents, images etc.) with them.

We'd love to start building an abstraction layer so that we can support both SQL Server and SQL/e so that we can support network and remote users and not have the nightmare that is SQL Server Express installation. (care of the windows installer group's bugs...)

Thanks! Hoping for a favourable answer!

View 3 Replies View Related

10 Database Limit

Jan 24, 2008

Hi there,

I am aware of the recommended practice of not mirroring more than 10 databases on a single instance but does this apply to 64-bit edition as well?

Cheers,
James.

View 1 Replies View Related

Limit On SQL CE Upgrade.exe?

Feb 8, 2007

Is there a size limit on the upgrade.exe to convert the SQL 2.0 SDF file to the SQL Mobile 2005/SqL CE 3.0?

I have a 184M SDF that I tried putting through the upgrade but i got an error that it exceed a 128M limit? Is there a way around it? maybe another parameter I need to pass in?

Thanks

Dorothy

View 3 Replies View Related

LIMIT And OFFSET

Aug 27, 2007

Please, please, please, please just add limit/offset to the language.
7 years of working around this unnecessary limitation are enough. And that's just me personally, i'm sure there are those out there with a longer history and are more irritated. I know this isn't the first post on this here, nor will it be the last. I think that should be taken as a hint, and something should be done about this. Something like this:
SELECT column FROM table LIMIT 10 OFFSET 10

See, it wasn't that hard =) Now there are no ugly contortions to go through just to paginate the data. And don't recommend I return all 20k rows and do it on the client side, m'kay, or write ridiculous sql. It seems that for all the hard work that went into making those other features work that this could have been done. Don't lie, you know it could have! If there was a voting feature for suggested improvments, or a bug tracker + watch list that functioned the same, it would help. Others do that, as well.

//Another Annoyed DeveloperAnd seeing as there aren't any feature/suggestion channels that work (see:connect), I guess this forum is the best we can do. Sorry.

View 3 Replies View Related

For Each Loop Limit

Apr 10, 2008

I'm experiencing some problems with the for each loop.

I have to loop about 3 million records and execute a data flow for each one of them.

The problem is that the job always goes out of memory and ends with an error.

I've been trying to find a solution here but all I found was very old and I'm using SP2.

Can anyone tell me if there is any kind of limit on this?

Thanks in advance.

View 2 Replies View Related