I am trying to just get a count of the number of distinct rows are in a table --- not looking at the entire row of fields, but only selecting a few.
i don't want to see the distinct rows, i just want a count of how many are in the table.
Hi,
I have a table with 3 columns - userID, score, dateCompleted
From this table I wish to select the highest score for each userID and the date for that score. If there is more than one row with the same userID and score (i.e. the user got the same score twice), I want to select the earliest date.
To clarify, there are multiple rows which have the same userID, and may have the same score too, but I want to pull out just 1 score for each userID.
I could do this quite easily if the DISTINCT operator worked on a per column basis, but it works on the entire row instead. Is there a way to SELECT DISTINCT column, but still output other columns in those rows?
I hope this is clear, but please let me know if I've confused you.
Hi, I have the following script segment which is failing:
CREATE TABLE #LatLong (Latitude DECIMAL, Longitude DECIMAL, PRIMARY KEY (Latitude, Longitude))
INSERT INTO #LatLong SELECT DISTINCT Latitude, Longitude FROM RGCcache
When I run it I get the following error: "Violation of PRIMARY KEY constraint 'PK__#LatLong__________7CE3D9D4'. Cannot insert duplicate key in object 'dbo.#LatLong'."
Im not sure how this is failing as when I try creating another table with 2 decimal columns and repeated values, select distinct only returns distinct pairs of values.
The failure may be related to the fact that RGCcache has about 10 million rows, but I can't see why.
Any ideas?
This is my SQL :
Select p.patientid,p.patientname,p.patientIc,pvi.DateOfAdmission,pvi.visitid,pvi.ward,pvi.bedno,pf.status,pvi.SurgeonName,(f.Title + ' ( Ver ' + (CAST(f.Version as Char(10))) + ')') as Title FROM patient p, patientvarianceinfo pvi,patientForm pf,Form f where (p.PatientName LIKE '%" & Name & "%' or p.PatientIc LIKE '%" & ic & "%' or pvi.Ward LIKE '%" & ward & "%' or pvi.Bedno LIKE '%" & bed & "%') and (p.patientid = pvi.patientid) and (p.patientid = pf.patientid) and (pvi.patientid = pf.patientid) and (pf.FormID = f.FormID)and p.patientid in (select patientid from patientform pf)how do i get the number of rows?
Hello,
I start with this table,
Tagname
Timestamp
Value
A
12/12/2007 12:00:01
1
A
12/12/2007 12:00:02
1,1
A
12/12/2007 12:00:03
30
B
12/12/2007 12:00:01
12
B
12/12/2007 12:00:02
12
B
12/12/2007 12:00:03
12
C
12/12/2007 12:00:01
13,4
C
12/12/2007 12:00:02
14
C
12/12/2007 12:00:03
14,5
I would like the table to be as following
Timestamp
A
B
C
12/12/2007 12:00:01
1
12
13,4
12/12/2007 12:00:02
1,1
12
14
12/12/2007 12:00:03
30
12
14,5
Does anyone knows how to do this within a query?
Thx,
Nic
I want to build query to return how many rows are in this query:select distinct c1, c2 from t1But SQL won't accept this syntax:select count (distinct c1, c2) from t1Does someone know how to count multiple distinct columns? Thanks.--Disclaimer: This post is solely an individual opinion and does not speak onbehalf of any organization.
View 3 Replies View RelatedI have a table called Employee which have 6 columns. This table are having 1000 records. Now I want to know the distinct value count of all these 6 columns as well as normal count. like this:
ColumnName DistinctCount NormalCount
Id 1000 1000
Name 1000 1000
Phone 600 600
PINCode 200 1000
City 400 1000
Gender 2 1000
I have the below working query
select distinct OrderNum from invoiceHistory where orderNum in (56387,57930,57933,57935)
I need to get all columns of the distinct ordernum as resultset. I am working to get the resultset of below.
select invoiceID,distinct orderNum,invoiceDate from invoiceHistory where orderNum in (56387,57930,57933,57935)
I get the rows(records) I want by removing the RequestDateTime column from the Select query SELECT distinct et.configname as 'Part Number', substring(email,(charindex('@',email)+1),len(email)) as 'email ending',u.company_name as 'Company',u.city as 'City',u.country as 'Country' --,RequestDateTime as 'Date Downloaded'from new_products.dbo.modelrequests etleft outer join cc_host.dbo.usr_list u on et.username = convert(varchar(50),u.[user_id])where interfacename like '%download%'and result=0and u.country = 'JP'and CONVERT(DATETIME, RequestDateTime, 102)>= convert(DATETIME,'12/5/2007', 102)GROUP BY email,et.configname,u.company_name,u.city,u.country,requestdatetime I want to show the RequestDateTime for the 1600 records that do get selected. How can I put RequestDateTime back in the resulting table output without it being part of the Distinct clause?
View 3 Replies View RelatedHello,
When I am using DISTINCT in the SELECT clause for a table having a column of datatype "ntext" in SQL 2000 as well SQL 2005, it fails giving the error as "ntext data type cannot be selected as DISTINCT". This is coz
"The text, ntext, or image data type cannot be selected as DISTINCT."
But I am able to insert into a temporary table having a column whose datatype is nvarchar) using this SELECT clause in SQL 2000. Please advice me how this happens. If I am not worng, implicit conversion has happened. But this insert fails raising the same error in SQL 2005. Please help me to find the difference
thanks in advance!
suppose i have aDataset with 11 rows. field1 with 5 rows of aaa, 6 rows of "bbb"
I want's some thing like
field1 rowcount
aaa 5
bbb 6
I'm having a problem building a query for an application I'm writing. Basically, there are a bunch of records in a table, and some of them may have the same identifier code. I only want one of each identifier code. The table looks like this:
Memo
---------
Msg_Identifier varchar(60)
Memo_ID int (pk)
Subject varchar(64)
Message text
Priority int
Deleted int
My query:
SELECT DISTINCT Msg_Identifier, Memo_ID, Subject, Message, Priority FROM Memo WHERE Deleted = '0'
When I run this query, I get "The text data type cannot be selected as DISTINCT because it is not comparable."
I only want Msg_Identifier to be the distinct field, and it's obviously not set up as text. I've used SELECT DISTINCT in the past but I don't ever recall hitting an issue like this. What's the best way to do it?
I am trying to get count on a varchar field, but it is not giving me distinct count. How can I do that? This is what I have....
Select Distinct
sum(isnull(cast([Total Count] as float),0))
from T_Status_Report
where Type = 'LastMonth' and OrderVal = '1'
Hi all
i using lookup error output to insert rows into table
Rows count rows has been inserted on the table 59,123,019 mill
table rows count 6,878,110 mill ............................
any ideas
Code:
SELECT ((ACOS(SIN(34.37769 * PI() / 180) * SIN(latitude * PI() / 180)
+ COS(34.37769 * PI() / 180) * COS(latitude * PI() / 180) * COS((132.404738 - longitude)
* PI() / 180)) * 180 / PI()) * 60 * 1.1515) AS ranges FROM completeyuubinwithlatlon having ranges<=3
First, I have that code whenever i disregard the "having ranges<=3" it selects record but when I include it it returns error. The problem is I want to just select records with ranges less than 3 miles..how do I do that.. and I want to count the number of selected rows and store it on a column on the same table.
I have to dts rows by timestamp. For example if my dts downloaded at 10 am then in the next run i want to grab rows updated in the AS400 after 10am. what is the best way to go in ssis?
thanks...
kushpaw
Hi all,
i have a table which has date and count as column
Can you please...help me write a query for it.
date | type | count
10/07 | A | 70
11/07 | A | 50
12/07 | A | 50
11/07 | B | 60
12/07 | B | 50
13/07 | B | 40
11/07 | C | 50
12/07 | C | 60
13/07 | C |60
14/07 | A | 50
i need to write a sp such that..if user sends date and @ndays(no. of days) as parameter say 11/07 and 3
then
out put
type 11/07 12/07 13/07
A 50 50
B 60 50 40
C 50 60 60
Thanks..
Regards,
sradez
Dear Gurus,I have table with following entriesTable name = CustomerName Weight------------ -----------Sanjeev 85Sanjeev 75Rajeev 80Rajeev 45Sandy 35Sandy 30Harry 15Harry 45I need a output as followName Weight------------ -----------Sanjeev 85Rajeev 80Sandy 30Harry 45ORName Weight------------ -----------Sanjeev 75Rajeev 45Sandy 35Harry 15i.e. only distinct Name should display with only one value of Weight.I tried with 'group by' on Name column but it shows me all rows.Could anyone help me for above.Thanking in Advance.RegardsSanjeevJoin Bytes!
View 4 Replies View RelatedI want to show a row number for each row returned by a SELECT starting at 1 and incrementing by 1 for each row.
Anyone got any ideas?
Say you have a table that contains 1000 rows, you create a simple select statement with a where clause that returns 100 or so of those rows. Easy enough.
Now, let's say that you wish to modify that select so that out of the 100 rows that match the where clause criteria, you only wish to return 10 rows randomly (i.e., you could run this query multiple times and get different results). How exactly would you go about doing this, efficiently?
I've thought about creating a stored procedure that will query the initial 100 rows into a temp table with an additional column (to number the rows from 1 to 100). Then setting up a loop (10 iterations) that will then generate a random number from 1 to 100 and select that row number into another temp table. At the end of the loop I'll have my table of randomly selected records. I am sure there is probably a better way to do this...
~Mike
Hi All
by using this query
"select * from sample order by newid()" im getting a set of rows. On refreshing this query i need the same set of rows to validate.(provided sufficient data in the table).
Please provide me the query to use for this
Adv. Thanks
Hari...
Hi!I'm a new T-SQL developer and just hit a roadblock.I have a scenario that goes like this: I have 2 stored procedures,spInner and spOuter. spInner has a SELECT statement which wouldnormally be used by a class using MS Enterprise Library and that outputgoes into a DataSet. However, I need to get the output of the SELECTstatement to go into spOuter and that's what I can't seem to figureout.I know I may be asked to use functions that return tables in replies tothis post, but I can't do that as some parts of my application have anEXEC(string) for dynamic SQL, instead of spInner.Any help appreciated.Cheers,N.I.T.I.N.
View 2 Replies View Relatedhi!
i am trying to get a count of 3 distinct values , one of them being a datetime - am running into errors - any suggestions are appreciated.
select count(distinct individualid + intakeseq + exitdate)from #temp
i am trying to do a distinct on individualid + intakeseq + exitdate,
& then get their count.
Thanks!
Hello
for mS SQL 2000
with
SELECT DISTINCT Name, Region
FROM Groups
GROUP BY Name, Region
I get 254 rows
but how can I get the COUNT only ?
something like
SELECT COUNT(SELECT DISTINCT Name, Region
FROM Groups
GROUP BY Name, Region) AS CPT FROM Groups
i must get 254
thank you for helpings
hi all,
sometimes, when tables are poorly joined, we have exactly same rows as a result.. so we use distinct.. but how can we count(*) the distinct rows?
select distinct d.docrefid from tbljobDocuments d
left join tbljobitems j on j.docrefid=d.docrefid
where d.docrefid='DC01C06027' and j.itemid='39J1667-H86700'
will return me
docrefid
DC01C06027
but when i try to count(*) only the distinct record, it count all..
select distinct d.docrefid, count(*) from tbljobDocuments d
left join tbljobitems j on j.docrefid=d.docrefid
where d.docrefid='DC01C06027' and j.itemid='39J1667-H86700'
group by d.docrefid
will return me
DocrefId Count
DC01C060272
when i expect
DocrefId Count
DC01C060271
~~~Focus on problem, not solution~~~
Hi,
I have write down following query ..
select a.patientid, a.providerid
from PatientDrugList a
JOIN Admin..Loadinstance b on a.intLoadInstanceId = b.intLoadInstanceId
where a.MailReasonTypeId = -1
and b.SubClientId = 22
and b.StatusTypeId > 0
Now how could I get distinct patientid count and distinct providerid count
Reply soon
Hi
I have a table which stores the shift information for employees. The table contains 10 columns as Employeename,Employeeno,month,year,shifttimings etc. If an employee works a day in a particular shift, then a row will be inserted in to the above table for that employee.
Now at the end of the month i wanted to calculate the shift details for each employee for a particular month of a given year like employeename,employeeno, noofdays(countof shiftdays).
Can some body help?
Thanks in Advance!
Santhosh
Hello everyone,
I have a little problem here. I need to select data from multiple columns and multiple tables, some of those columns can have NULL value. I have tried few things, and havent find the right way so far. Problem that i am incountering is that when i run SELECT statment as it is right now, i dont get back results which match search parameters but have NULL value in one or more column in select statment. How can i fix this problem?
SELECT Person2role.person2roleID,Person.firstname, Person.lastname, Person.sex
FROM Person LEFT OUTER JOIN
Person2Role ON Person.personID = Person2Role.personID
WHERE (Person.firstname LIKE '%' + ISNULL(@firstname + '%', ''))
AND (Person.lastname LIKE '%' + ISNULL(@lastname + '%', ''))
AND (Person.sex = ISNULL(@sex, Person.sex))
This is a part of SELECT statment..just so you can get the idea of what i am doing..i have few more parameters
I am working with SQL Server 2005 Express Version
Thank you,
Alex
Hello,
I have an external process that polls message rows from a table. apon taking them, it also needs to mark them as taken. there is a status column in the table. marking messages as taken will change the value of status.
How can i perform both these operations in one command? Select the top x rows where their status is equal 1, then update the status of those same rows to a value of 5 for example.
I could iterate through the result of hte intial select and change the status 1 by 1 using a cursor, but this seems like a slow option.
Any other ideas?
Thank you.
I have an SQL statement that looks like the following:
SELECT [Docs-Entities].entityID, entityName, COUNT([Docs-DocsEntities].filename) AS numDocs
FROM [Docs-Entities] LEFT JOIN [Docs-DocsEntities]
ON [Docs-Entities].entityID = [Docs-DocsEntities].entityID
GROUP BY [Docs-Entities].entityID, entityName
but the problem is that numDocs (the COUNT) is not returning a distinct count. In the DocEntities table, a particular document can actually have multiple entries with the same entityID so that produces inflated numbers for numDocs. But when I do a SELECT DISTINCT on a particular entityID, the results are less and don't match the numDocs number because I only need to list the document one time. This is not a huge issue, but it looks bad on my site.
Is there a way that I can make COUNT count distinctly?
Thanks for the help and I hope I worded that cllearly...
I'm struggling to fin a way to use DISTINCT keyword with ROLLUP (or Cube).For example,SELECT employee_city, employee_country, COUNT(DISTINCT employee_name)FROM employeeGROUP BY employee_city, employee_country WITH ROLLUPthat query does not work.Is there a workaround?Thx.
View 2 Replies View Relatedhi, I have a table that contain(custname,ordno,ordchange,ordlocation,reaso n)
I want to determine the following:
how many orders per customer,how many orders changed per customer,how many order location per customer, what reason for change per customer,
here what I wrote as a query, tell me if I am right. I thank you for your help
select custname, COUNT(DISTINCT ordno) ,
COUNT(DISTINCT ordchange) ,
COUNT(DISTINCT ordlocation) ,
COUNT( reason)
from customers a, orders b
where a.custname =b.custname
group by custname
helloi want to do only one query for :SELECT DISTINCT Name FROM UsersSELECT COUNT(Name) AS Names FROM Users WHERE (Name LIKE 'xxx')something like :SELECT Name, COUNT(Name) AS Names FROM Users WHERE Name IN (SELECT DISTINCT Name FROM Users)i must get :Joe 23julie 17.....thank you
View 3 Replies View Related