Unique SQL Query... Help!
Jan 14, 2008
I have a field in my table named x_CFSNUM that is filled with various 4 digit numbers- ex: 0067, 0068, 0097, etc. These are not unique.
I would like to write a query that will tell me the sum of the times the highest number occurs.
For Example: If these were the numbers: 0067, 0067, 0067, 0089, 0094, 0095- The query would produce the quantity of "3" because 0067 is listed 3 times.
I know this is confusing. Please let me know if you need any clarification.
Thanks
Mark
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May 4, 2007
I have a problem with a SQL SELECT query. As far as my research goes i figured out that UNIQUE is used when you have one column that you whant unique and DISTINCT is used when you have more than one column that you want to all be unique. But i have a query where i want just some of the columns to be unique and some not. Here is the full query (It's in a stored procedure):
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[rpt_ExecSum_Combined_4fields](@BondGroupID int)
AS SELECT DISTINCT
SUM(dbo.Bond.LoanAmount) AS SumOfBondValue, COUNT(dbo.Bond.BondID) AS CountOfBond, dbo.ProgressStepType.ProgressStepType
FROM dbo.BondGroup INNER JOIN
dbo.TransactionTable ON dbo.BondGroup.BondGroupID = dbo.TransactionTable.BondGroupID INNER JOIN
dbo.Bond ON dbo.TransactionTable.TransactionID = dbo.Bond.TransactionID INNER JOIN
dbo.ProgressStep ON dbo.TransactionTable.TransactionID = dbo.ProgressStep.TransactionID INNER JOIN
dbo.ProgressStepType ON dbo.ProgressStep.ProgressStepTypeID = dbo.ProgressStepType.ProgressStepTypeID
WHERE (dbo.BondGroup.BondGroupID = @BondGroupID)
GROUP BY dbo.ProgressStepType.ProgressStepType, dbo.ProgressStep.ProgressStepID
HAVING (dbo.ProgressStepType.ProgressStepType = 'AIP (Approval in Principle) received') OR
(dbo.ProgressStepType.ProgressStepType = 'Grants') OR
(dbo.ProgressStepType.ProgressStepType = 'Attorney') OR
(dbo.ProgressStepType.ProgressStepType = 'Feedback received from bank')
ORDER BY dbo.ProgressStepType.ProgressStepType
*********
With the DISTINCT it gives me a full set of unique values but what i want is this: Every CountOfBond may have more than one SumOfBondValue and they may be the same, but if there is more than one dbo.ProgressStepType.ProgressStepType the query should only read it once. In other words the dbo.ProgressStepType.ProgressStepType is a unique value and the rest not...
Please help, my boss is on my case :)
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Apr 21, 2006
Hi, I have been asked to write some code that can check a large table for duplicate values in a non pk column. The table may have up to 1000000 rows. The PK column is an auto increment field. For performance reasons the column in question could not be set to unique values only for inserts, an algorithm is used to create unique no's before the insert but what I am doing is double checking that their have been no duplicates created accidently. If their are duplicates I need to know what rows they occurred on.
Thanks
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Sep 21, 2006
How would I get the unique email addresses and its associated row of data from a SQL Server table that has no unique fields defined? If there is a duplicate email address then only show the first one and not the other rows with the same email address. Example table and data UserID LastName Email997249 MCCO-49 S.MCCO-49@SampleISD.org997462 BATE-62 A.BATE-62@SampleISD.org997605 DENS-05 B.DENS-05@SampleISD.org 997622 KAIS-22 A.KAIS-22@SampleISD.org997623 KAIS-22 A.KAIS-22@SampleISD.org997624 KAIS-22 A.KAIS-22@SampleISD.org997625 KAIS-22 A.ZKAIS-22@SampleISD.org997626 KAIS-22 AX.ZKAIS-22@SampleISD.org997627 KAIS-22 AX.KAIS-22@SampleISD.org Result UserID LastName Email997249 MCCO-49 S.MCCO-49@SampleISD.org997462 BATE-62 A.BATE-62@SampleISD.org997605 DENS-05 B.DENS-05@SampleISD.org 997622 KAIS-22 A.KAIS-22@SampleISD.org997625 KAIS-22 A.ZKAIS-22@SampleISD.org997626 KAIS-22 AX.KAIS-22@SampleISD.org Thanks
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May 12, 2006
Hi - I've got a table in SQL server that has its unique ID field as binary data. I have a gridview displaying data from this table and I have set the datakey of this gridview as that binary data field.I have a 'Select' ciolumn in my gridview that, when selected, will display more details from the selected record. The problem is, how do I pass the selected id back to sql server bearing in mind that it's binary data? Here's what I'm doing at the moment:I have a function in my data accsess class that queries the database:Public Function getDetailsById(ByVal Id As System.Byte) As DataSet Dim con As New SqlConnection(conStr) Dim cmd As New SqlCommand("SELECT * FROM tableName WHERE Id=@Id", con) cmd.Parameters.Add("@Id", SqlDbType.Binary) cmd.Parameters("@Id").Value = Id Dim ds As New DataSet Dim adp As New SqlDataAdapter(cmd) adp.Fill(ds) Return ds End FunctionAnd then I call this function from my page with the gridview using: Dim da As New myDataAccess Dim ds As New DataSet ds = da.getDetailsById(GridView1.SelectedDataKey.Value)But I get the error:Conversion from type 'Byte()' to type 'Byte' is not valid.Any ideas where my data/code is going wrong? I'm not sure how to pass this sort of data around?Thanks
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Feb 13, 2013
I am trying to create a query to return the latest record from a dataset. The code created so far returns multiple records, where I need a single record to be returned.
Please see attached .pdf for full explanation....
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Jun 7, 2008
I am new to SQL, still learning.
If I want to retreive unique records for e.g. VendorName,City and State however no 2 vendors must be of the same city or state.
How can I do this?
I have used Select and distinct but that still brings unique vendornames in the same state and city. I only need one vendor per city and State.
Help!
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Oct 27, 2014
I have a huge database (20 columns and 56000 lines) and I need a query that can return each single unique character from all this database.
For example if character "a" appears at least one time in this database I need this query to show it to me.
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May 22, 2008
hilet me explain my need..following are the tables im using..tbl_company (company table - parent) id company 1 test 2 test123 tbl_dept (department table - master) id dept 1 dept1 2 dept2tbl_compdept (company departments table - child) cmpid deptid 1 1 2 1 2 2 wats my need is.. while the company is listing..by query using joins, result was like this..company depttest dept1test123 dept1test123 dept2i need company test123 should be listd only once..when i use group by or distinct means, all r listed..is there any way to filter out therepeating company list by just listing the company list only once..
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Apr 14, 2008
HI all,
I am having a bit of difficulty trying to work how to write a query. I am normally only used to doing SELECT, UPDATE and DELETE queries ... the simple ones.
However I have come across a query whereby things get a lot more complex.
My company has an employee table with a way to store data that I have not been used to.
EMPLID, NAME, DATELASTMODIFIED, EmployeeStatus. (There are lots more but N/A)
The problem that I have is that there can be more than one row for an employee id. Therefore I cannot uniquely identify an employee id. Instead what I have discovered I have to use is to find an employee with the last modified date higher than the other rows with the same employee id.
The query I am trying to achieve is:
Code:
Count all employees that have an employee status of 'Employed'.
(Therefore counting only one employee per id rather than counting the same employee more than once)
The trouble is, translating this into a SQL query. I have tried to have a go but don't know how to query:
Code:
SELECT COUNT (DISTINCT EmplId)[
FROM Employeetable AS e
WHERE e.LASTDATEMODIFIED <And Stuck>
AND EmployeeStatus = 'Employed'
So I thought hmm lets pseudo code this, but then I get stuck into compelixty:
Code:
SELECT * FROM EmployeeTable WHERE EmployeeStatus = 'Employed'
int counter = 0;
ForLoop (EmplId)
{
LastDate Date
if(LASTMODIFIEDDATE > LastDate)
{
LastDate = LASTMODIFIEDDATE
}
//How do I return the value? Do I count the value?
}
Has anyone come across this issue before? Can anyone help it quite fundemental to what I have to query so help on this is highly appreciative.
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Nov 30, 2005
Hello,
I'm trying to select the maximim value for certain zip codes, for example my table looks like this:
ZIP Category Value
90210 S1 5
90210 S2 10
90210 S3 2
90210 S4 3
10221 S1 24
10221 S2 3
And I want the end result to be each unique zip code with the category having the maximum value, for example 90210 S2, 10221 S1, etc
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Mar 10, 2012
how to join these 3 tables but there are duplicate rows in the results. How can I get all the unique rows to only show up once.
My query is:
SELECT tbl_rate.rate_ID, tbl_rate.rate_site_IDref, tbl_rate.rate_rank_IDref, tbl_rate.rate_dollar, tbl_rate.rate_ot, tbl_rate.rate_dt, tbl_rate.rate_loa,
tbl_employee.employee_name, tbl_LEM.LEM_date, tbl_LEM.LEM_reg_hrs, tbl_LEM.LEM_ot_hrs, tbl_LEM.LEM_dt_hrs, tbl_LEM.LEM_tt_hrs, tbl_LEM.site_IDREF,
tbl_LEM.LEM_LOA, tbl_LEM.LEM_Expenseinfo, tbl_LEM.LEM_workorder, tbl_LEM.LEM_posted, tbl_LEM.LEM_Expense, tbl_LEM.LEM_tagnumberREF,
tbl_LEM.LEM_reg_rate, tbl_LEM.Lem_ot_rate, tbl_LEM.Lem_tt_rate, tbl_LEM.LEM_dt_rate, tbl_LEM.Lem_loa_rate, tbl_LEM.LEM_ID, tbl_LEM.LEM_equip_days
FROM tbl_rate INNER JOIN
tbl_employee ON tbl_rate.rate_rank_IDref = tbl_employee.employee_rankREF INNER JOIN
tbl_LEM ON tbl_employee.employee_ID = tbl_LEM.employee_IDREF
The results somehow need to be distinct by tbl_lems.lem_ID
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Jul 8, 2013
If I have a simple query like:
select * from bigtable
where product_code in ('abc','def','hij','klm')
I know that each of those product_codes will return a large data set. What I'd like to do is to run the same query but constrain the result set to a max rownum of 200.
Is this possible?
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Oct 19, 2013
I'm fairly new in SQL. Been trying for months to create the right script for this particular case but still cannot give me 100% result as required.
SCENARIO :
I am required to query from 2 tables for those unique record that meets both conditions below:-
1. Status is 1 @ max (trans_id), paychnl = CC
2. Status is 2 @ max (trans_id), paychnl = A or B
FYR, 2 tables and respective columns to query are as below:-
table PTFF --> col ID, TRANS_ID,TRANSDATE,EFFDATE,TRANSCODE
table CHFF --> col STATUS,PAYCHNL
FYI, status refers to the paychnl method status:-
==> 1 means the current paychnl method
==> 2 means the previous paychnl method
paychnl method can be multiple because it will be defined as 2 for all the histories' paychnl chosen earlier, but 1 should only be unique as it is the latest paychnl chosen for each unique ID. however, it may appear more than once when it's taking those in earlier TRANSDATE, so here we would need the max trans_id as it will show the latest updated TRANSDATE.
Apart from that, I need only those most recent paychnl to be A or B and the latest paychnl is CC so, this been indicated by the same max trans_id for the same ID.
Aft trying so many times on this MAX command but failed to get any result, I only managed to come up to this part only. please refer below:-
table PTFF --> col ID, TRANS_ID,TRANSDATE,EFFDATE,TRANSCODE
table CHFF --> col STATUS,PAYCHNL
SELECT DISTINCT PTFF.TRANSCODE,PTFF.ID,PTFF.TRANS_ID,PTFF.TRANSDATE,PTFF.EFFDATE, CHFF.STATUS,CHFF.PAYCHNL
FROM DBO.PTFF PTFF
JOIN DBO.CHFF CHFF
ON CHFF.ID = PTFF.ID
WHERE
PTFF.TRANSDATE BETWEEN 130501 AND 130831
AND PTFF.TRANSCODE='T522'
AND (CHFF.STATUS=1 AND CHFF.PAYCHNL='CC' OR (CHFF.STATUS=2 AND (CHFF.PAYCHNL='A' OR CHFF.PAYCHNL='B')))
However, the script above returns :-
1. All those records with STATUS 1 regardless paychnl is A or B in most recent status 2,
2. Expected results also appear ==> 1 same ID with status 1 while paychnl=CC and status 2 while paychnl=A or B
3. Also duplicates of expected results but for different TRANSDATE and not at MAX TRANS_ID
Samples of the result:-
IDSTATUSTRANS_IDPAYCHNLTRANSDATEEFFDATETRANSCODE
51881712CC13082920130920T522
9361164CC13081620140813T522
78531153CC13082020130814T522
8949151CC13081220130801T522
8949251B13081220130801T522
19081455CC13051620131129T522
19082455A13051620131129T522
19081409CC11101920111129T522
19082409A11101920111129T522
19081404CC11092920111129T522
19082404B11092920111129T522
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Jan 20, 2008
Hi Respected,
I am working in .net, and according my client he want to see all record from table uniquely, and does not want to give order also.
for doing this i did use DISTINCT, but my problem is when i used DISTINCT the query return sorted records that is why, i need guide which will help to make DISTINCT and physical stored record from the table.
thanks.
bay
regards Rajat.
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Sep 21, 2015
I am trying to calculate the maximum sales per store where multiple stores exist in the same region (i.e there must be doubles of that row) in order to determine the most profitable store per that region.
E.g.
Store Sales
A 500
B 200
B 100
C 400
C 800
D 100
D 200
D 700
Looking for result set like:
B 200
C 800
D 700
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Jul 5, 2015
This index is not unique
ix_report_history_creative_id
Msg 2601, Level 14, State 1, Procedure DFP_report_load, Line 161
Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'.
The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
Msg 3621, Level 0, State 0, Procedure DFP_report_load, Line 161
The statement has been terminated.
Exception in Task: Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'. The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
The statement has been terminated.
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May 14, 2015
I've a excel spreadsheet with 650 records with unique PONumbers. I need to pull data from SQL server based on the PONumbers. I don't want to run select statement 650 times. How do I retrieve the records in efficient way?
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Oct 21, 2013
Aim –To produce a unique line by month for the FDMSAccountNo
I have created the following query (see below) which produces the following result set
FDMSAccountNo AvgValCard_TypePence_Percentfee_wholesale_date BegMonthDate
8780000018820.012900000CreditPercent2009-07-082009-07-01 00:00:00.000
8780000018820.015700000CreditPercent2011-02-242011-02-01 00:00:00.000
8780000018820.014700000CreditPercent
2011-02-252011-02-01 00:00:00.000
SELECT
[FDMSAccountNo],
AVG([fee_retail_amt]*1.0) AS AvgVal,
Card_Type,
[Pence_Percent],
[fee_wholesale_date],
DATEADD(mm,DATEDIFF(mm,0,[fee_wholesale_date]),0) AS BegMonthDate
[Code] ....
Desired results
FDMSAccountNoAvgValCard_TypePence_Percentfee_wholesale_date
8780000018820.012900000CreditPercent2009-07-08
8780000018820.012900000CreditPercent2009-08-08
8780000018820.012900000CreditPercent2009-09-08
8780000018820.012900000CreditPercent2009-10-08
8780000018820.012900000CreditPercent2009-11-08
[Code] ....
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Aug 27, 2014
I have an Orders table which has the following fields:
OrderID (PK, int, auto increment, not null)
CustomerID (FK, int, null)
PaymentDate (datetime, null)
UserID (uniqueidentifier)
(and other irrelevant fields)
Basically, for a specific PaymentDate range (29th July 2014 - 26th August 2014, inclusive) I want to select all orders where they only appear once in the orders table based on the CustomerID, so I only want to know about them if they have a paid order (decided by PaymentDate not being null) in that date range, but also taking into account if they have ever had a paid order outside of that date range. I'll also be joining on to the aspnet_Users table to get the username assigned to that order.
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May 4, 2007
hi ,
i got this error ... i have tried various scenarios.. nothing works for me... can any one gimme the proper guidance...
The variable name '@CCSID' has already been declared. Variable names must be unique within a query batch or stored procedure.
thanx in advance
raj
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Jul 1, 2015
TABLE DEFINITION
Column NameComments
CustomerIDINT
SequenceNoINT
CommentsVARCHAR(MAX)
CUSTOMER TABLE
CustomerIDSequenceNoComments
11ABC D
12CDE
13ABC
14ABC D
15CDE
16abc
27ABC DEF
28
29ABC DEF
210DEF
211XYZ 123
212ABC
313PQ RST
OUTPUT
CustomerIDSequenceNoComments
13ABC
14ABC D
15CDE
16abc
28
29ABC DEF
210DEF
211XYZ 123
212ABC
313PQ RST
Records should be filtered by
1.Display only Unique Comments from Customer Table for all the customers,
2.If Comments are same then display the row which has maximum SequenceNo
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Apr 7, 2008
Hi,
Te following situtation is :
ReportModel is created ,there is only a named query in DSV ,it has a few tables in it(The relationship are inner joins and outer joins).
The question is how could I create a unique logical primary key to identify each unique row in the named query dataset, and also you cannt generate a model unless the named query has a logical primary key . how can I solve this problem,any help?
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Sep 22, 2004
A UNIQUE INDEX must inherently impose a unique constraint and a UNIQUE CONSTRAINT is most likely implemented via a UNIQUE INDEX. So what is the difference? When you create in Enterprise Manager you must select one or the other.
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Jul 20, 2005
HelloWhat should I use for better perfomance sinceunique constraint always use index ?ThanksKamil
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Jun 24, 2006
What's the difference in the effect of the followings:
CREATE UNIQUE NONCLUSTERED INDEX
and
ALTER TABLE dbo.titles ADD CONSTRAINT
titleind UNIQUE NONCLUSTERED
I found there're two settings in Indexs/Keys dialog box of the management studio, Is Unique, and Type. The DDL statements above are generated by setting Is Unique to yes plus Type to Index, and just Type to Unique Key, respectively. What's the difference between them?
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Mar 7, 2001
Hi everyone,
I need urgent help to resolve this issue...
As far as the performance goes which one is better..
Unique Index(col1, col2) OR Unique constraint(col1, col2) ?
Unique constraint automatically adds a unique index
and unique index takes care of uniqueness then whats the use of unique constraint ?
Which one do one use ?
thanks
sonali
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Jan 20, 2006
BOL says a unique constraint is preferred over a unique index. It also states that a unique constraint creates a unique index. What then is the difference between the two, and why is a constraint preferred over the index?
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Mar 26, 2008
hi team,
.Can i create umique constraint with out unique index.when i am creating a unique constraint sql creates a unique index (default) can i have only unique constraint ?
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Mar 12, 2008
I am having a problem trying to figure out the best way to get the results I need. I have a table of part numbers that is joined with a table of notes. The table of notes is specific to the part number and user. A row in the notes table is only created if the user has entered notes on that part number. I need to create a search that grabs all matches on a keyword and returns the records. The problem is that it currently returns a row from the parts table with no notes and a separate row with the notes included if they had created an entry. It seems like this should be easy but it eludes me today.
Here is the code
Code Snippet
create procedure SearchPartKeyword
(
@Keyword varchar(250) = null,
@Universal_Id varchar(10) = null
)
as
select p.PartNumber, p.Description, p.ServiceOrderable, n.MyNotes, p.LargestAssembly, p.DMM,
p.Legacy, p.Folder, p.Printer
from Parts p inner join notes n on p.PartNumber = n.Identifier
where n.Universal_ID = @Universal_ID and p.Description like @Keyword
union
select p.PartNumber, p.Description, p.ServiceOrderable, '' as MyNotes, p.LargestAssembly,
p.DMM, p.Legacy, p.Folder, p.Printer
from Parts p
where p.Description like @Keyword
and the results:
PartNo Description SO Notes LA DMM Legacy Folder Printer
de90008 MAIN BOARD 1 DGF1 114688 0 0 0
de90008 MAIN BOARD 1 I love this part Really I do DGF1 114688 0 0 0
This could return multiple part numbers and If they have entered notes I want the row with the notes
Thank You
Dominic Mancl
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Nov 13, 2007
What 's difference between Unique key and unique index in SQL server 2005?
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May 1, 2008
Here is the table I created:
create table Test (
[recId] [int] identity(1, 1) not null,
[code] [varchar](50) not null,
[prime] [bit] not null constraint [DF_Test_prime] default (cast(0 as bit)),
constraint [PK_Test] primary key clustered
(
[recId]
) with fillfactor = 90 on [primary]
) on [primary]
go
insert into Test (code, prime) values ('AVA', cast(1 as bit))
insert into Test (code, prime) values ('BUS', cast(1 as bit))
insert into Test (code, prime) values ('BUS', cast(0 as bit))
insert into Test (code, prime) values ('BUS', cast(0 as bit))
insert into Test (code, prime) values ('CAR', cast(1 as bit))
insert into Test (code, prime) values ('CAR', cast(0 as bit))
insert into Test (code, prime) values ('RLW', cast(1 as bit))
insert into Test (code, prime) values ('RLW', cast(0 as bit))
insert into Test (code, prime) values ('RLW', cast(0 as bit))
select *
from Test
I need to create a constraint on this table that will not allow me to have two rows that are prime for the same code. So the following insert statement should fail:
-- This should fail
insert into Test (code, prime) values ('RLW', cast(1 as bit))
Thanks for you help!
Regards,
Anand
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Apr 5, 2007
in sql server 2000
i know how to make primary key using enterprise manager
i want to make one of the columns foreign key,how to do that using enterprise manager.and what is the difference between both.
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