Difference Between Where And Having Clause
Dec 5, 2005can anyone please tell me the difference between group by and having clause.
View 2 Repliescan anyone please tell me the difference between group by and having clause.
View 2 RepliesQuestion is in the subject.
Thanks in advance
-Jamie
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?
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
View 3 Replies View RelatedI 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
)
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?
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.
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.
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.
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
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????
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
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
View 5 Replies View RelatedWhat is the difference between below? And how can I make GETDATE() the same as System.DateTime.Today.ToShortDateString()?
System.DateTime.Today.ToShortDateString()
and
GETDATE()
Hi all,
What is the difference between SQL Server 2000 & SQL Server 2005?
Thanks!
Can anybody tell me what is the difference between backing up database to a file and backing up to backup device.
Thanx in adv.
Hello,
I am transfereing Data into text format.
The datas are about 5 table and has almost 50000 to 2 million rows.
I am using the same query for BCP and DTS. But I find the dreference between those. I mean DTS is taking less memory and more time than BCP to complete the process .
Anybody can share any comment for this issue ?.
Can somebody tell or may refer to a site that show the differences between SQL Server 2000 SP2 and SP3a.
Thanks.
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
Account (PK) | Description
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
What is the difference between stored procedure and functions ?
thanx in advance
Hi,
What is the difference between Inline-table value function and multi statement table value function?
Thanks In Advance
Hi Experts,
please tell me the difference between BCP and DTS
provide me links if possible.
thankyou very much
hello friends,
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'
but in this y database i got much memory like around 30 mb.
why this happend?
sorry if this is a small question.
thankyou friends
Hi
I want to know the difference between
SQL server Express and
SQL server 2005 Express Edition.
Thanks
Yimoot.
hi, i'm having difficulty figuring out how to implement a set difference between two queries. the only set operator i've been able to come across is union. thanks in advance!
d
Hi all,
May any one tell the differnce between t-sql Stored procedure and the same SP written in CLR compatible?.Will CLR SP really improve the performance?
Your response will be highly appreciated.
Thanks in advance
Hi everyone,
What is the real difference among them ?
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
RETURN( SELECT * FROM OGRENCI WHERE ADI=@ADI )
END
Are SQL Server Express & SQL Server 2005 one & the same thing? Or is the former a part of the latter? Actually when I was downloading Visual Web Developer 2005 Express, I was given the option to download Microsoft SQL Server 2005 Express Edition as well; so I am getting confused between SQL Server Express & SQL Server 2005.
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
Cannot connect to MyPCSQLEXPRESS.
Now how do I find out what's the server name so that I can login to create & manage databases in Management Studio Express?
Please note that after re-installing WinXP Pro, my m/c. name has remained the same; I didn't change it.
Thanks,
Arpan
Hi,
I want to know what are the differencve between CONTAINS and LIKE, Which is better to use and in which condition.????
I searched on google but can't able to find out major differnces or any good article realted to this,
Hai,
I want to know what is the difference between views and joins. why we are going for views in sql server.
I have two numeric variables in T-SQL - @Var1 and @Var2These variables can be positive or negative. I want to find the difference between the two variables, eg:@Var1 = -50@Var2 = 25Difference = 25 @Var1 = -50@Var2 = -40Difference = 10 @Var1 = 60@Var2 = 10Difference = 50 Is there a function in SQL Server to carry this out?
View 4 Replies View RelatedHow to find a month difference using sql query?
View 4 Replies View RelatedBetween having SQL and using SQL server enterprise manager with MSDE
View 1 Replies View Related