Check For Duplicate Entries In One Field
Obviously, I'm a complete n00b at SQL.
I have a table in Access 2003 with about 6,000 records and there are about 20 records that have duplicate data in the first field (CompID).
I'm trying to make the first field my primary key, so I need to fix these duplicate entry.
I could export to Excel and fix the problem that way, but in the interest of learning SQL I want to figure out how to do it properly.
Thanks in advance for what is hopefully a simple answer.
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Hi everybody couldn't get through with saving my data on the table with two primary keys... my table structure is this pubidintUnchecked (primary key) pubchar(1)Unchecked publchar(1)Unchecked pubcodechar(2)Unchecked (primary key) a sample data is here pubid pub publ pubcode 1 a b ab 1 b b bb 2 a b ab 2 b b bb when i save this table modifying the pubid and pubcode as primary keys the following error displays... Unable to create index 'PK_PUBS3'. CREATE UNIQUE INDEX terminated because a duplicate key was found for index ID 1. Most significant primary key is '51'. Could not create constraint. See previous errors. The statement has been terminated. what i understand is that on the primary key duplicates are not allowed how could i allow it? thanks
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Select Records That Do Not Duplicate On A Certain Field.
I am looking for some help in pulling certain people out of a table This is the basic setup of my table PK ID NAME MEETING 1 11111 Joe CLASS98 2 22222 Jane CLASS98 3 33333 Bob CLASS98 4 11111 Joe CLASS04 5 22222 Jane CLASS04 6 44444 Sally CLASS04 What I am wanting to do is Select only the people who attended CLASS98 but didn't attend CLASS04 I could just remove the CLASS04 people by sorting if I could just return the rows that do not duplicate the ID and meeting is either CLASS04 or CLASS98 Either way would get me to my goal. Any help is GREATLY appreciated. Thanks Jimmyjoe
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Select Single Row With Duplicate Value In Particular Field
Hi, I have several row records in which name email --------- --------- name1 abc@abc.com name2 abc@abc.com name3 abc@abc.com name4 123@123.com name6 123@123.com How should I write the query which can return records with unique email address with any name attached? The expected record set will be name email --------- --------- <any> abc@abc.com <any> 123@123.com I was thinking to select the distinct of email and just stuck at here. I encountered this problem few times and still cannot solve it. Any help will great appreciated. Thanks in advance.
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How To Delete Duplicate Data From Field
my table structure is id field1 1 i am from india 2 i am from usa 3 i am from delhi So i want to remove common data from field1 , means after run the query table should be like id field1 1 india 2 usa 3 delhi thanks in advance saumitra tamrakar
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SELECT Highest Value Of Duplicate Field
I have a table like TradeID ActionID 58096 3663 58096 3664 78901 2235 78901 2236 I want to select the only the TradeID with the highest ActionID I tried using select distinct tradeid,actionid From cct Where ActionID = (SELECT MAX(ActionID) FROM cct1 WHERE cct1.TradeID = cct.TradeID) group by tradeid,actionid but the result is not correct please help In god we trust,everything else we test.
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Query Returning Duplicate Field Names
I have a .NET program that can connect to either an Access 97 database or anSQL Server 7 database. In the database I have two tables which have a fieldcalled ID. When I run a query like "SELECT A.*, B.* FROM A, B", the queryreturns those fields as "A.ID" and "B.ID" when connected to Access 97, butas "ID" and "ID" in SQL Server 7. Is there anyway to get SQL Server toprepend the table name to the field name in a case like this and not returnduplicate field names like that without having to specify aliases for thefields?- Don
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Group By Query To Find Duplicate Field Value
Hello, Not sure how to do this. I think I need to use a Group By query. I have a "Products" table with the following fields: Program# Number UPC Item Item# Size Dept Everything is specific to the Program#. In other words, for every instance of a Program# there can be more than one Product, which is specified by the "Number" field. So: SELECT * FROM Product WHERE [Program#] = '12345' should return this: 12345 | 1 | 000012345678 | Cookies | 98765 | 12ct | Retail | 12345 | 2 | 000012345678 | Cake | 98765 | 12ct | Retail | 12345 | 3 | 000012345678 | Ice Cream | 98765 | 12ct | Retail | However, some recordsets are returning like this: 12345 | 1 | 000012345678 | Cookies | 98765 | 12ct | Retail 12345 | 1 | 000012345678 | Cake | 98765 | 12ct | Retail 12345 | 2 | 000012345678 | Ice Cream | 98765 | 12ct | Retail In which case I have to fix them (the "Number" field) with an update query sp they are numbered sequentially. Luckily, this doesn't happen very often. Can someone help me with a query that will return only those records with duplicate values in the "Number" field? I am not sure how to construct this query which I will use as a stored procedure. TIA, Bruce Wexler Programmer/Analyst
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.dbf File Import (duplicate Field Names)
I am importing a file creating by an application which exports the file into .dbf format. Very unfortunately, this .dbf file can have fields with IDENTICAL column_names. Utilizing ActiveX, I create an ado connection to the .dbf file using a visual foxpro drver. However, and not unexpectantly, I can not do the 'select *' from the file if there are duplicate names. Can anyone make recommendations here that might help? Oh, this is SQL200 in case that impacts what you might advise!!!!
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How Check Field - And Add Result Row At END
help i need to check each column and if i don't have the value than add to a new result row if not show the missing value if i have in the field A B C than OK (like day1 + day2) if i don't have the value A B C than than show it like this a|b|c (like day3) if i don't have the value c than than show it like this -|-|c (like day4) if i don't have the value a than than show it like this a|-|- (like day5) if i don't have the value b than than show it like this -|b|- (like day6) day1 day2 day3 day4 day5 day6 ------------------------------------------------------------------------- * c * a c a * a * a c * a b # b b c b * $ Q c s c # 0 0 0 * ---------------------------------------------------------------------new result row ok ok a|b|c -|-|c a|-|- -|b|- TNX
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Check If Field Is All Date
Hey all, I've been ehre off and on when I've needed help. And I know someone answered my question last time with the exact info I needed. But I seem to have lost the query I saved. I pretty much need a query that can filter a field I have adn pull up any records that are not in in date format. My current field is text and I'm trying to convert it over to DateTime but am getting stuck. Seems at least one of the records does not have a date format. Thank you all.
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How Do I Check If A Field Is Null?
hi guys, I'm using SQLServer 2005 and I was wondering how I check if some variable is null or not? I tryied to do as the code show but it doesn't work: declare @number int set @number = (select number from numbers where number_id = 1) if (@number = null) begin set @number = 12 end Thank you very much
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Best Way To Check If A Boolean Field Is Flagged
I have a long query that returns a table like: ID Name bool 1 Joe 0 2 James 0 3 John 1 When the boolean field is equal to 1 for any of the records I would like to return an empty record set. What is the best way to do this? I know I could use IF EXISTS but my query is so long that I would prefer not to repeat the query multiple times. Is there an alternative?
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Check For Null In Repeater Date Field
I'm about ready to pull my hair out. I have a repeater control, and a date field. If the field is a valid date, I'll use it to calculate and display the person's age. Otherwise, I want to display "N/A". My problem is trying to determine if the date field is null or not.I'm using SQL Server 2005 which allows Nulls in the date field, and for many records I don't have a birth date. It makes sense for these records to leave the date Null. This is my code:Protected Sub Repeater1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemDataBound If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then Dim LabelIcon As Label = CType(e.Item.FindControl("LabelIcon"), Label) Dim LblAge As Label = CType(e.Item.FindControl("LblAge"), Label) Dim inmate As WAP.prisonmembersRow = CType(CType(e.Item.DataItem, System.Data.DataRowView).Row, WAP.prisonmembersRow) If System.IO.File.Exists(Server.MapPath("~/images/picts/" & inmate.FILE2 & ".jpg")) Then LabelIcon.Visible = True End If If inmate.DATE_OF_BIRTH Is DBNull.Value Then If IsDate(inmate.DATE_OF_BIRTH) Then LblAge.Text = "Age: N/A" Else LblAge.Text = "Age: " & GetBirthdate(inmate.DATE_OF_BIRTH) End If End If End IfEnd Sub How can I resolve this?Diane
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Check The Field Existence Of A Database Table
Check the field existence of a database table, if exist get the type, size, decimal ..etc attributes I need SP SP ( @Tablename varchar(30), @Fieldname varchar(30), @existance char(1) OUTPUT, @field_type varchar(30) OUTPUT, @field_size int OUTPUT, @field_decimal int OUTPUT ) as /* Below check the existance of a @Fieldname in given @Tablename */ /* And set the OUTPUT variables */ Thanks
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How To Check Null Or '' In Date Field In Expression And ...............
I have a column say 'ActivationDate' which is a (database timestamp [DT_DBTIMESTAMP]) which I want to replace with an expression in derived columns The condition is if 'ActivationDate' field is null or '' then 'Null' else 'ActivationDate' I am struggling to write this condition. Without condition i.e. at present it saves the value in this database '1753-01-01 00:00:00.000'. In the preview the 'ActivationDate'field does not show any thing so I recon it is either null or ''
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There Must Be An Easier Way - Dupe Check And Increment Field
Greetings all, I have a bit of brainteaser that's going to take some serious thought. I'm importing information from .xls files into a SQL table. The problem is I need to check for dupes and increment certain fields on success of dupe find and then not insert or delete the dupes. For example, if I have Adam, Turner, 32, 50 already in the table and someone tries to insert Adam, Turner, 32, 50...I need it to increment to read Adam, Turner, 64, 100 and not insert the record. (Notice 2 fields were incremented.) With that, I have created an INSERT trigger as follows: set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO ALTER Trigger [dbo].[trgInsertCheck] ON [dbo].[MyTable] FOR INSERT AS BEGIN EXEC sp_UpdateDupes EXEC sp_DeleteDupes END The first stored procedure checks for dupes and updates if any dupes are found as follows: -------------------------------------------------------------------------------------------------------------------------------------- set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO ALTER Procedure [dbo].[sp_UpdateDupes] AS DECLARE @FirstName varchar(20), @LastName varchar(20), @Age int, @Widgets int DECLARE c1 CURSOR FOR SELECT FirstName, LastName, Age, Widgets FROM MyTable GROUP BY FirstName, LastName, Age, Widgets HAVING COUNT(*) > 1 OPEN c1 FETCH NEXT FROM c1 INTO @FirstName, @LastName, @Age, @Widgets WHILE @@FETCH_STATUS = 0 BEGIN UPDATE MyTable set Widgets = Widgets + @Widgets, Age = Age + @Age WHERE FirstName = @FirstName AND LastName = @LastName FETCH NEXT FROM c1 INTO @FirstName, @LastName, @Age, @Widgets END CLOSE c1 DEALLOCATE c1 Lastly, it finds all dupes, deletes them and inserts one row back in as follows: -------------------------------------------------------------------------------------------------------------- set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO ALTER Procedure [dbo].[sp_DeleteDupes] AS DECLARE @FirstName varchar(20), @LastName varchar(20), @Age int, @Widgets int --declare all fields in table DECLARE c1 CURSOR FOR SELECT FirstName, LastName, Age, Widgets FROM MyTable GROUP BY FirstName, LastName, Age, Widgets HAVING COUNT(*) > 1 OPEN c1 FETCH NEXT FROM c1 INTO @FirstName, @LastName, @Age, @Widgets WHILE @@FETCH_STATUS = 0 BEGIN --Delete all dupes...the cursor remembers the current record DELETE FROM MyTable WHERE FirstName IN (SELECT FirstName FROM MyTable GROUP BY FirstName HAVING COUNT(FirstName) > 1) AND LastName IN (SELECT LastName FROM MyTable GROUP BY LastName HAVING COUNT(LastName) > 1) AND Age IN (SELECT Age FROM MyTable GROUP BY Age HAVING COUNT(Age) > 1) AND Widgets IN (SELECT Widgets FROM MyTable GROUP BY Widgets HAVING COUNT(Widgets) > 1) --insert the current record back into the table INSERT INTO MyTable(FirstName, LastName, Age, Widgets) VALUES(@FirstName, @LastName, @Age, @Widgets) FETCH NEXT FROM c1 INTO @FirstName, @LastName, @Age, @Widgets END CLOSE c1 DEALLOCATE c1 Is there an easier way to do this? (I know Age doesn't make much sense in this example but just replace it with a field would logically be incremented such as wadgets.) Adamus
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Anyway To Check If A Text Field Is Blank (not Null But Just A Empty String '') ?
i have a trigger on a table right now... when fields are inserted, theres a text field inserted and i want to check if that text field = '' (the empty string, not NULL) and if it doesn't equal that, then perform some row updates on other tables, but if it is empty, to not do anything else in the trigger... right now i have this: IF ((SELECT Note FROM XATPoDetail WHERE ReqNbr = (SELECT ReqNbr FROM Inserted)) LIKE('')) Note is the text field, XATPoDetail is the table where its being inserted into. I had to do the select FROM the table because it wouldn't let me select a text data type from the "Inserted" virtual table but it tells me me "Error 279: The text, ntext, and image data types are invalid in this subquery or aggregate expression" thanks
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