Counting Unique Entries In A SQL Statement
Nov 29, 2006
I have a complicated problem, and I'm new to SQL so any help would be greatly appreciated.
I am creating an export file (fixed width) that contains a breakdown of items on an invoice, and each "export file" can contain many invoices. The problem is that I need to apply an incremental "invoice" count on each line. This isn't as simple as doing a running sum of "1" on each record, because the first 5 rows may all be on the same invoice, and all rows need to be identified as being associated with "invoice 1". The next invoice will be known as "invoice 2" and again may contain many rows, all requiring "invoice 2".
Does this make sense?
EG.: I am shipping products, and the breakdown is: Vessel, Voyage, Invoice No, Product, Mark.....
SAGMIR 025 001 HEM/FIR HLF550...
SAGMIR 025 001 HEM/FIR KILN-D HLF505...
SAGMIR 025 002 HEM/FIR HLF660....
The SQL statement that produces the above is a Select query with a grouping on VES/VOY/BL_ID/PRO/MARK where the "BL_ID" indicates they are on the same invoice, but is not the incremental number I require. Complicated, i know...
Thanks in advance for anyone who can help.....if this explanation isn't clear please tell me!
Michael
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Dec 1, 2006
e.g. column name: nameID, projectID)
2, 123
3, 213
3, 243
4, 987
5, 243
5, 213
I want the result to be:
2, 123
4, 987
How would I write the query?
Thanks in advance.
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Jul 20, 2005
I have a table 'Group2Operation' that stores many to many relationsbetween the 'Group' table and the 'Operation' table (each group is haspermission to perform one or more of the available operations)PROBLEM=======I need to prevent duplicate entries being created. e.g. lets say thatin the 'Group2Operation' table a record links the 'editor' group tothe 'publish' operation. Should I prevent an administrator creating aduplicate of that record? (Otherwise deleting that permission willhave to be done twice or more for it to be effective)SOLUTION?=========So far I've done this with a trigger:CREATE TRIGGER Group2OperationDuplicates ON dbo.Group2OperationFOR INSERT, UPDATEAS UPDATE Group2OperationSET NoDuplicate = CONVERT(nvarchar(10),GroupID) + OperationTagThe 'NoDuplicate' unique index column in the Group2Operation tablestores a concatenation of the unique group and operation identifiers.So when an attempt is made to create a record, the trigger is fired.If there is a duplicate, this will mean a duplicate entry in the'NoDuplicate' column. As a result, the INSERT or UPDATE will fail andthe duplication will be prevented.WHAT DO YOU THINK?==================What do you think? Am I going about this in the right way? Is atrigger a good way to do this or should I rely on application logic toprevent duplicates?Any help appreciated by this db novice.John Grist
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Mar 7, 2006
Hi AllStrange request I know, but could somebody give me pointers on how I can put3 queries into 1 'thing' and then get only the unique entries from this'thing'.To explain, I'm using Excel/VBA/ODBC to query an SQL DB. The 3 queriesthemselves aren't that complex and all return the same 2 fieldsets of stockcode and stock desc. Because these separate queries might bring back thesame stock code/description I need to amalgamate the data and then queryagain to bring out only distinct stock values, eg:Query 1 brings back:stock code stock descIVP Invoice PaperSTP Statement PaperKGC Keyboard Coveretc... etc...Query 2 brings back:stock code stock descIVP Invoice PaperBOB Back PackKGC Keyboard Coveretc... etc...Query 3 brings back:stock code stock descKGC Keyboard Cover3.5"D 3.5" Disksetc... etc...I need to produce 1 resultset that shows:stock code stock descIVP Invoice PaperBOB Back Pack3.5"D 3.5" DisksKGC Keyboard CoverSTP Statement Paperetc... etc...(all unique entries)I'm currently just bringing back the 3 query results in Excel, but I'd liketo be able to do the above.In light of I'm using Excel/VBA/ODBC on a PC, is it possible to do?ThanksRobbie
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May 18, 2006
Dear All,
I have the following set of data, where FLD1, FLD2...FLD4 are the fields.
I want to be able to select for each group FLD1,FLD2,FLD3 ORDER BY FLD4 ASC the top 2 entries
Example :
FLD1 FLD2 FLD3 FLD4
ABC XXX 1 98
ABC XXX 1 81
ABC XXX 1 5
ABC XXX 2 1
ABC XXX 2 9
ABC XXX 2 2
BBC XXX 2 2
The result I want is :
ABC XXX 1 5
ABC XXX 1 81
ABC XXX 2 1
ABC XXX 2 2
BBC XXX 2 2
Is there a way to do it using SQL?
Thanks in advance
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Sep 21, 2005
I have a list of zones and IP addresses assigned to those zones. On the page that manages those zones and their IP addresses needs to only display the RANGES of IP addresses that exist for that zone. For example if this is my data for Zone 1:IPAddress (removed first octet)002.202.148002.202.149187.202.243187.202.244187.202.245187.202.246187.202.247187.202.248187.203.187I want to display it as this on the management page:Zone 1 : IPAddress Ranges From 2.202.148 to 2.202.149 From 187.202.243 to 187.202.248 From 187.203.187 to 187.203.187Is there any way to make the SQL statement list the mins and maxes for every range? Or is this something I just HAVE to do in the code? I would like a record to return:MIN | MAX2.202.148 | 2.202.149187.202.243 | 187.202.248187.203.187 | 187.203.187I think I'm trying to expect a lot from SQL but I thought i would ask anyway. Thanks!~Cattrah~
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Dec 2, 2013
If I wanted to search for Jobs as a particular status (e.g. 0130) and wanted to keep the jobs at this status until it has reached 0500, 0125, or 0900 in it's subsequent status log entry, how can I write the SQL for it to achieve it?
I have the following SQL which searches for the Jobs at 0130, but don't know how to develop it further to search on the requirement above.
------ SQL -------
SELECT
job.job_number,
(SELECT MAX(jsl.job_log_number)
FROM job_status_log jsl
WHERE
job.job_number = jsl.job_number AND
jsl.status_code = '0130') as Last_Early_Warning_Status_Entry
[code].....
In the job_status_log table above, there is a job_log_number field which increments by 1 when there is a new status log entry.
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Sep 22, 2004
Hello all. I've been pulling my hair out for the last few weeks trying to come up with a statement that will do what I want. I'm hoping someone can lend some help.
Basically I have a table of articles with titles. I want to go thru the titles and find out what words show up the most. For example, if I had these two article titles in two records:
Microsoft develops new software for NASA
NASA blames software problem on Microsoft
I would get the following results - the word and the number of times it appears:
Microsoft 2
NASA 2
Software 2
The statement should ignore those words that only appear once. It would be nice to skip static words like the, and, a, etc.. (Or words 3 characters or less)
I have fulltext query enabled on the table which works great for searching, but not for what I want it to do.
Any suggestions? Thanks in advance.
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Jul 23, 2006
Hi,
Suppose a table [Inventory]:
Item Color Quantity
-------------------- -------------------- --------------------------
Table Blue 10
Table Red 20
Table Yellow 30
Chair Blue 40
Chair Red 50
I'm wondering if there is a group state like this:
Select Item, ?Function(Color), Sum(Quantity) From Inventory Group by Item
which returns this:
Table Blue,Red,Yellow 60
Chair Blue,Red 90
Does anyone has an idea how this can be achieved?
Regards,
Manolis Perrakis
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Jan 19, 2007
I've been searching and trying out SQL statements for hours and I'mstill having a problem.I'm querying 3 tables... and I only want the first unique recordreturned.Currently, the data returned looks like this..............New York New York ANew York New York BNew York New York CLos Angeles California ALos Angeles California BLos Angeles California CI want the select statement to return this instead...New York New York ALos Angeles California AI'm using MS SQL server.please help?thanks for your help.
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Jul 9, 2015
I'm trying to update rows in a simple table that has a UNIQUE KEY CONSTRAINT defined on one of its columns. Here is the DDL for the table:
CREATE TABLE [dbo].[SEC_USER](
[SEC_USER_ID] [int] IDENTITY(1,1) NOT NULL,
[USER_CODE] [varchar](100) NOT NULL,
[USER_NAME] [varchar](128) NOT NULL,
[EMP_CODE] [varchar](6) NOT NULL,
[Code] ....
When trying to execute the UPDATE statement the query fails with a constraint violation error:
Violation of UNIQUE KEY constraint 'UQ__SEC_USER__A039F1EE62FE8444'. Cannot insert duplicate key in object 'dbo.SEC_USER'. The duplicate key value is (34337).
What has me baffled is that I'm not doing any insert. Also, the value that it's referencing - 34337 - doesn't exist in the table at all. I'd rather not drop the constraint.
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Jun 8, 2015
I have a two tables each having a uniqueidentifier column person_id
I am trying to a select statement where I want a list of the person_id's in one table that are not in another table.
-- insert into wch_needed those who need checked
insert into #wch_needed (person_id, rendered_by )
select distinct e.person_id, e.rendered_by
from #wch_who o, encounter e
where o.person_id not in (select distinct person_id from #wch_have )
and o.person_id = e.person_id
the where conditional
where o.person_id not in (select distinct person_id from #wch_have )
does not work.
How can I do this?
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Sep 22, 2015
I have a field I am trying to bring into a SQL statement
,ISNULL(Convert(nvarchar(50),OPP1.OriginatingLeadId),'') AS 'OriginatingLeadId'
I get this error message
Conversion failed when converting from a character string to uniqueidentifier.
the field specs' originatingleadid is attached ....
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Sep 22, 2014
I am trying to use SQL to pull unique records from a large table. The table consists of people with in and out dates. Some people have duplicate entries with the same IN and OUT dates, others have duplicate IN dates but sometimes are missing an OUT date, and some don’t have an IN date but have an OUT date.
What I need to do is pull a report of all Unique Names with Unique IN and OUT dates (and not pull duplicate IN and OUT dates based on the Name).
I have tried 2 statements:
#1:
SELECT DISTINCT tblTable1.Name, tblTable1.INDate
FROM tblTable1
WHERE (((tblTable1.Priority)="high") AND ((tblTable1.ReportDate)>#12/27/2013#))
GROUP BY tblTable1.Name, tblTable1.INDate
ORDER BY tblTable1.Name;
#2:
SELECT DISTINCT tblTable1.Name, tblTable1.INDate
FROM tblTable1
WHERE (((tblTable1.Priority)="high") AND ((tblTable1.ReportDate)>#12/27/2013#))
UNION SELECT DISTINCT tblTable1.Name, tblTable1.INDate
FROM tblTable1
WHERE (((tblTable1.Priority)="high") AND ((tblTable1.ReportDate)>#12/27/2013#));
Both of these work great… until I the OUT date. Once it starts to pull the outdate, it also pulls all those who have a duplicate IN date but the OUT date is missing.
Example:
NameINOUT
John Smith1/1/20141/2/2014
John Smith1/1/2014(blank)
I am very new to SQL and I am pretty sure I am missing something very simple… Is there a statement that can filter to ensure no duplicates appear on the query?
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Jan 16, 2007
We are developing a project that is expected to hold TB of data and the back end used is SQL Server 2005.
I have the following problem
I have applied Nonclustered index over a column on a table.
Designed a SP for insertion which caters for updation incase the criteria based on the input is met.
The logic goes like this
Incase there exists a row containing the value of the column that is indexed for uniqueness, there should be updation. If not there should be a new row created.
However often there is an error message that is placed above. This happens only on some of the SPs and only on rare occasions.
Can any body tell me if there is any problem with the SQL Server 2005
Thanks in advance
R Suresh, SQLDBA
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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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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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Dec 1, 1998
Below are the registry entries I want to update but "Trusted_Connection" = "Yes" does not seem to have any effect when it is run. Any ideas??
REGEDIT4
[HKEY_CURRENT_USERSoftwareODBCODBC.INIAAED]
"Driver"="C:WINNTSystem32sqlsrv32.dll"
"Description"="AAED"
"Server"="SIM0108"
"Trusted_Connection"="Yes"
[HKEY_CURRENT_USERSoftwareODBCODBC.INIODBC Data Sources]
"AAED"="SQL Server"
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Jan 27, 2005
Hi, I am searching for the most easy SQL solution:
Lets say i have 500000 rows of cars in one table with 30000 different car ID's.
This table contains no keys, no date values, but I need the last row of these 30000 different cars. How do I get them without adapting table structure and without using cursors ?
Thx for reply.
dajm
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Sep 24, 2006
Hello
my table :
Report :
R_id (PK)
RName
RDate
i am having a few 10.0000 lines and i want to keep the last 10 (or less if not in the table) rows maximum for each name
i can have 100 report by name (100 rows with the same name and of course R_id and RDate are different)
how can i do it ?
thanks a lot for helping
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Mar 30, 2012
I have a table which stores phone numbers of a customer in a table.
Say this table is as below
CustomerName - PhoneNumber
Customer 1 - Phone number 1
Customer 2 - Phone number 2
Customer 2 - Phone number 3
Customer 3 - Phone number 4
What would be the best approach to prevent adding another entry against Customer 2. I should be able to add new customers and add multiple phone number against all other Customers. The restriction should be only against Customer 2.
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May 14, 2004
I am trying to pull the last three entries from a table in my database but I am having trouble writing the correct query. The database has multiple entries for each item in my database but I want to pull just the last three for each item. I have tried the TOP function with the items ordered in descending order but that only works when I define each item seperatley. I need to know how to pull the last three entries for every item I have in the table.
Thanks,
Tim
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Nov 8, 2005
Hello
Without technical information and DB design, I wish to know the maximum entries in MS SQL in million. I guest for access are a limit of 2 million and a 2GB DB.
How much for MS SQL in max. entries and how much in GB?
A lot of thx for your feedback.
Dominique Javet
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Mar 28, 2006
I'm extracting data from a log (log_history) of patients where nurses perform various actions on a call, such as assessing and reassessing, despatching etc. This is the script:
Select
L.URN,
LH.THE_TIMESTAMP,
LH.ACTION_TYPE,
LH.ACTION_BY,
LH.ACTION_REQD,
LH.NOTE,
em.position_type_ref
From
LOG L
Join Log_history LH on (L.URN = LH.LOG_URN)
left outer join employee em on (em.code = LH.action_by)
Where
(L.Taken_at >= :DateFrom and L.Taken_at <= :DateTo) and (LH.ACTION_TYPE = 'D') and (em.position_type_ref ='NU')
Order By
L.URN ASC, LH.THE_TIMESTAMP DESC
The result I get shows duplicate 'timestamp' entries and I only want to return unique timestamp entries. Does anyone have any ideas. I'm self taught and have hit a wall
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Jun 12, 2006
Hi,
I need help desperately. The following is an example of the data that I have.
I have two tables one name Customers and the other named Orders. The tables have the following attributes
CUSTOMER
CustomerNum, CustomerName, OrderNum
ORDER
OrderNum, OrderDesc, CustomerNum
Bare in mind that the CustomerNum can have multiple customers attached to it, example a whole family (I know bad database design but it's too late to change) Let's use the following info for the tables respectively
CUSTOMER
0001 Sharon Bigbsy 1234
0001 Dale Bigbsy 1235
0001 Omar Bigbsy 1236
ORDERS
1234 Chips 0001
1235 Gatorade 0001
1236 Candy 0001
The query i'm using is select Customer.CustomerNum, Customer.CustomerName, Orders.OrderDesc from CUSTOMER, ORDERS where CUSTOMER.CustomerNum = ORDER.CustomerNum
The results are as follows
0001 Sharon Bigbsy Chips 1234
0001 Sharon Bigbsy Gatorade 1235
0001 Sharon Bigbsy Candy 1236
0001 Dale Bigbsy Chips 1234
0001 Dale Bigbsy Gatorade 1235
0001 Dale Bigbsy Candy 1236
0001 Omar Bigbsy Chips 1234
0001 Omar Bigbsy Gatorade 1235
0001 Omar Bigbsy Candy 1236
It's giving all the orders place to each customer name but I need only the following
0001 Sharon Bigbsy Chips 1234
0001 Dale Bigbsy Gatorade 1235
0001 Omar Bigbsy Candy 1236
I'm using SQL in MS Access 2003. Please disregard the abnormalities of the tables, it's someone else's work I inherited with over 6000 entried.
Any help will be greatly appreciated
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Feb 7, 2007
I have an application that allows the user to enter data into a table. There are multiple users so I put in some code that, I thought, would keep 2 users from creating a new record at the same time. The IDs for the records are identical and this is causing a problem.
The IDs are in the format of ####-mmyy. at the start of each month the #### part goes back to 1.
We tried a test today where we had 2 users click on the New button at exactly the same time. The IDs that were created were identical. Is there anyway on the database that I can prevent this from happening?
Here is how I create the new record id:
I get the MAX(ID) from the table
I add 1 to the ID and then insert a new record with the new ID into the table.
Any help is appreciated.
Thanks,
enak
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