Difference Between Where And Having Clause

Dec 5, 2005

can anyone please tell me the difference between group by and having clause.

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Can Anyone Give Me A Layman's Explanation Of The Difference Between CURRENT_TIMESTAMP And GETDATE() (if There Is A Difference)?

Oct 24, 2007

Question is in the subject.

Thanks in advance
-Jamie

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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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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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Is It Possible To Re-reference A Column Alias From A Select Clause In Another Column Of The Same Select Clause?

Jul 20, 2005

Example, suppose you have these 2 tables(NOTE: My example is totally different, but I'm simply trying to setupthe a simpler version, so excuse the bad design; not the point here)CarsSold {CarsSoldID int (primary key)MonthID intDealershipID intNumberCarsSold int}Dealership {DealershipID int, (primary key)SalesTax decimal}so you may have many delearships selling cars the same month, and youwanted a report to sum up totals of all dealerships per month.select cs.MonthID,sum(cs.NumberCarsSold) as 'TotalCarsSoldInMonth',sum(cs.NumberCarsSold) * d.SalesTax as 'TotalRevenue'from CarsSold csjoin Dealership d on d.DealershipID = cs.DealershipIDgroup by cs.MonthIDMy question is, is there a way to achieve something like this:select cs.MonthID,sum(cs.NumberCarsSold) as 'TotalCarsSoldInMonth',TotalCarsSoldInMonth * d.SalesTax as 'TotalRevenue'from CarsSold csjoin Dealership d on d.DealershipID = cs.DealershipIDgroup by cs.MonthIDNotice the only difference is the 3rd column in the select. Myparticular query is performing some crazy math and the only way I knowof how to get it to work is to copy and past the logic which isgetting out way out of hand...Thanks,Dave

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Feb 28, 2007

What is the difference between below? And how can I make GETDATE() the same as System.DateTime.Today.ToShortDateString()?
System.DateTime.Today.ToShortDateString()
and
GETDATE()

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Thanks!

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Hello,
I am transfereing Data into text format.
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Is there really a difference of approach?

I have several things to consider in an estimating database. Production, Shipping, Field Work, Field Hardware, etc...

All of the above have account numbers. Now I was wondering, would there be any benifit to having one table or several tables?

One Table Example

Account (PK) | Category | Description


or

Multiple tables

tbProduction
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tbShipping
Account (PK) | Description

tbProducts
Account (PK) | Description
etc.....


I like having the tables split up and/or all in one.

Any thoughts, pros / cons?

Mike B

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provide me links if possible.


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i've bee working in DTS just from 2 days.

i've one database like 'x' and now i've exported the data to a newly created database 'y'

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why this happend?


sorry if this is a small question.


thankyou friends

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d

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CREATE PROCEDURE sp_devamsizlik
@ADI CHAR(20)
AS
SELECT *
FROM OGRENCI
WHERE ADI=@ADI

GO
--------------------------------------------------------------------------------------

CREATE FUNCTION sp_devamsizlik
(@ADI
CHAR(20) )
RETURN TABLE
BEGIN
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I installed SQL Server 2005 in my WinXP Pro m/c. from the Microsoft website (after re-installing WinXP Pro since XP became corrupt). Earlier I used to login to Management Studio Express using my m/c. name followed by a followed by SQLEXPRESS as the server name. So if my m/c. name is MyPC, then I used to login to Management Studio Express using MyPCSQLEXPRESS as the server name but now when I try to login to Management Studio Express using the above server name i.e. MyPCSQLEXPRESS, then an error gets thrown saying



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Please note that after re-installing WinXP Pro, my m/c. name has remained the same; I didn't change it.



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