Searching A Column For A Value To Avoid Inserting A Duplicate Value
Jul 17, 2007
Hi there, newbie here.
I'm building a web application that allows for tagging of items, using ASP.NET 2.0, C# and SQL Server.
I have my USERS, ITEMS and TAGS separated out into three tables, with an intersection table to connect them.
Imagine a user has found an item they are interested in and is about to tag it. They type their tag into a textbox and hit Enter.
Here's what I want to do:
I want to search the TagText column in my TAGS table, to see if the chosen tag is already in the table. If it is, the existing entry will be used in the new relationship the user is creating. Thus I avoid inserting a duplicate value in this column and save space. If the value is not already in the column, a new entry will be created.
Here's where I'm up to:
I can type a tag into a textbox and then feed it to a query, which returns any matches to a GridView control.
Now I'm stuck... I imagine I have to use "if else" scenario, but I'm unsure of the code I'll have to use. I also think that maybe ADO.NET could help me here, but I have not yet delved into this. Can anyone give me a few pointers to help me along?
How can I avoid duplicate primary key error when I use DetailsView Inserting that the field column is one of the primary key ? Thanks in advance ! stephen
JAPAN Table2 I tried to get the Country for all the people in the first table. My SQL statement is: SELECT Table.Name, Table2.Country FROM Table Left Join Table1 ON Table.Rowid = Table1.Rowid Left Join Table2 ON Table1.Rowid1 = Table2.Rowid1 My final result is shown on Table2. But is it possible if I can generate the results without the duplicate Names (as shown below)?
I have a form view that I am using to insert new data into a sql express database and would like to find a way to avoid attempting to insert a record if the key already exists. is there a way to do this with the formview insert command. Everything works great until I try to add a record with an already existing value in the unique key field, then it breaks.
This is probably a silly question to most of you, but I'm in the processof splitting off years from a large DB to several smaller ones. Some ofthe existing smaller DBs already have most of the data for theirrespective years. But some of the same data is also on the source DB.If I simply do an insert keying on the year column, and a row beinginserted from the source DB already exists in the target DB, will aduplicate row be created?And if so, how can I avoid that?Thanks,John Steen*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
I have a table storing only 2 FKs, let's say PID, MID Is there any way that I can check distinct data before row is added to this table? For example, current data is PID MID------------100 2001100 2005101 3002102 1009102 7523102 2449 If my query is about to insert PID 100, MID 2001, since it's existing data, i don't want to add it. Can I use trigger to solve this issue?
Hi I am trying to insert entries in a table which has a composite primary key and i am inserting it on UID basis.
INSERT INTO TABLE_B (TABLE_B_UID,NUM_MIN, NUM_MAX,BIN, REGN_CD, PROD_CD, CARD) (SELECT UID,LEFT(NUM_MIN,16),LEFT(NUM_MAX,16),BIN, REGN_CD, PROD_CD, CARD FROM TABLE_A WHERE UID NOT IN (SELECT TABLE_B_UID FROM TABLE B))
When i insert it tries to insert a duplicate entries and gives me an error. Since I am new to SQL SERVER 2000 i need some help. I tried IF NOT EXISTS, EXCEPT but i guess i am wrong at the syntax.
I would like to know what options I have with regards to trapping a duplicate record before it tries to post to a SQL database. I have set the column to unique in SQL. But when I try to use ASP and post a duplicate record I get a system error. I would like to just create a referential error to notify the user that they cannot post a duplicate record please try again. Any help would be greatly appreciated.
Have a table that is used during a conversion. It is hit pretty heavily with inserts by mulitple session ids. For performance reasons I cannot add a unique constraint on the column that is getting duplicates (it is an encrypted cell in varbinary).
I do not want duplicates in this Encrypted Column. So before each insert the insert programs reads the table and verifies that the Encrypted Column value does not already exist. But unfortunately several duplicates are falling through the cracks. What are my options for not allowing duplicates?
I have a web app that calculates tax filing status and then stores data about the person.
Facts The insert is done through a stored procedure. All the sites that this program is being used are connecting through a VPN so this is not an external site. The duplicate records are coming from multiple sites (I am capturing there IP address). I am getting a duplicate about 3 or 4 times a day out of maybe 300 record inserts.
Any help would be greatly appreciated.
There are many sqlcmdInsert.Parameters("@item").Value =
I am duplicating a record from my asp.net page in to the database. When i click on save I am getting the following error message Violation of PRIMARY KEY constraint 'PK_clientinfo'. Cannot insert duplicate key in object 'clientinfo'. The statement has been terminated. The above message i am getting since i have tried to duplicate the clientname field of my table which is set as the primary key. What i want is instead of this message in the browser i need to display an alert saying "the clientname entered already exists" by checking the value from the database. Here is my code. pls modify it to achieve the said problem if(Page.IsValid==true) { conn.Open(); SqlCommand cmd = new SqlCommand("insert into clientinfo (client_name, address) values ('"+txtclientname.Text+"', '"+txtaddress.Text+"')", conn); cmd.ExecuteNonQuery(); conn.Close(); BindData(); txtclear(); System.Web.HttpContext.Current.Response.Write("<script>alert('New Record Added!');</script>"); Response.Redirect("Clientinfo.aspx"); }
Hi,I'm constructing a query that will performs a lot o datetimecalculumns to generate columns.All that operations are dependent of a base calculum that is performedon the query and its result is stored in a columna returned.I wanna find a way of reusing this generated column, to avoidreprocessing that calculumn to perform the other operations, causethat query will be used in a critical application, and all saving isfew.Thanks a lot.
Hi, I am developing a search engine for my application and I need to grab the entire row from the table if I found the search field in any of the columns and the search is not defined to one table. Please let me know how to search all columns in table without using column names indivdually.
Hi, Can you search a column of a database table to find all the rows that have a wor in it? example: I have a row that contains 'adventure st north', there are other columns in that table that are suppose to be the same but read 'adventure street N.' or 'adventure st. N.' or 'North Adventure st.' could I search for rows that contain 'adventure' in the column searched (lets call it columnA). I tried: select * from tbl_test where columnA LIKE 'adventure' and got no results. what is the way to do this?
I have a column bar chart which displays values for each month. As per the requirement, I am displaying the column values by selecting "Show labels" options. I see few values overlap on the column bars.
I have a table in which a non-primary key column has a unique index on it. If I am inserting a record into this table with a duplicate column value for the indexed column, then what will be the error number of the error in above scenario? OR How could I find this out?
I want to search Table 2 EmailAddress, with Table 1 EmailAddress, and if any of the Email Addresses in Table 1 are found in Table 2, delete the rows in Table 2.
Hi all, (I am using SQL Server 2005) I have created a new 'CUSTOMERS' table and created a colum 'CustomerID' as an Identity column. Now, a problem I find is that when I delete a particular record, its Identity value is used automatically for the New record I insert later! I do not want to re-use the already used Identity value. I just want to have the last CustomerID to be higher that all the previous ones. Is there any way to do this? Thanking you in advance, Tomy
select distinct case when LastStatusMessageIDName = 'Program completed with success' then 'Office 2013 SP1 Installed Successfully' when LastExecutionResult = '2013' then 'Machine Does not have Office 2013' when LastExecutionResult = '17023' then 'User cancelled installation' when LastExecutionResult = '17302' then 'Application failed due to low disk space.'
[Code] .....
The below is the output for the given query,here i want to see only one comment value in my list and the count is also sum of all where comment should be Application will be installed once machine is online(Bold columns o/p)
Comment Machine Name Application will be Installed once machine is Online 4 Application will be Installed once machine is Online 12 Application will be Installed once machine is Online 42 Application will be Installed once machine is Online 120 Machine Does not have Office 2013 25 User cancelled installation 32 Application failed due to low disk space 41 Office 2013 SP1 already Exist 60
I need o/p like below:in single line
Application will be Installed once machine is Online 178 Machine Does not have Office 2013 25 User cancelled installation 32 Application failed due to low disk space 41 Office 2013 SP1 already Exist 60
I am using the ContainsTable function to search a database from my (c#) app. This works relatively well and all fields of the table are indexed and searched. That is, any column, but per record only one column. What I mean is this: when searching for "chris 2007", I want to retrieve all items where author contains chris and year contains 2007. Currently, a search for chris brings up all items where author (or any other field) contains chris, a search for 2007 works as well, but chris 2007 fails as there is no -one- field where chris and 2007 are located. Can anybody help me achieve this? My code is:
Code Block SELECT FT_TBL.ID, FT_TBL.Type, FT_TBL.Author, IsNull(FT_TBL.Author, FT_TBL.Editor + ' (Ed.)') AS CorrectedAuthor, FT_TBL.Editor, FT_TBL.Title, FT_TBL.Abstract, FT_TBL.Comments, FT_TBL.Year, FT_TBL.City, FT_TBL.Publisher, FT_TBL.ISBN, FT_TBL.Pages, FT_TBL.Journal, FT_TBL.Issue, FT_TBL.Hyperlink, FT_TBL.Tags, KEY_TBL.RANK FROM Sources AS FT_TBL INNER JOIN CONTAINSTABLE(Sources, *, @searchQuery) AS KEY_TBL ON FT_TBL.ID = KEY_TBL.[KEY] ORDER BY KEY_TBL.RANK DESC;
I have a DB named zCIFRecord with a column named CIFUpdateDate which is of datatype varchar. The data is a date MM/DD/YYYY 01/30/2008, this is al that is in this column. I can search this colum for individual dates and for a range of dates. My problem is with a range of dates that is not within the same year, such as;
SELECT [CIFPan]
,[CIFMemNum]
,[CIFLName]
,[CIFFName]
FROM [FutureSoft].[dbo].[zCIFRecord]
WHERE [CIFUpdateDate] between '12/01/2007' and '01/30/2008'
will return nothing because it seems to only search on the 12 then the 01 then the 2008. this search can be performed properly on dates within the same year such as;
SELECT [CIFPan]
,[CIFMemNum]
,[CIFLName]
,[CIFFName]
FROM [FutureSoft].[dbo].[zCIFRecord]
WHERE [CIFUpdateDate] between '01/01/2008' and '01/30/2008'
will return the proper values because now all the numbers are in correct order. How can i create a search that lets me perform the first query as well as the second query. I tried to convert to a float but you cant convert a varchar to a float.
I have one table with two columns, GUID and PID and another table with three columns, GUID, LastName, and FirstName. For each unique PID, I need to find the PID's that have more than one GUID and then match that with their respective FirstName and LastName from the other table.
hello everyone, how to prevent putting same value into the column in the sqldatabase? while inserting value into the table from asp.net page dynamically,i dont want user to insert same data again and again. is there anyway i can make check the column in the database to look for the duplication value. if not then only i want to make it insert. thanks. jack.
Hi all, I have one table in which one column contains duplicate values. My question is how i can use T-SQL so that i can retrive values for all columns in the table which are distinct and retriving the single value from column which contains duplicate values.
INSERT INTO dbo.TestDpln VALUES('1','312','555','1212','212','1212','1') INSERT INTO dbo.TestDpln VALUES('1','312','555','1213','213','1213','1') INSERT INTO dbo.TestDpln VALUES('1','525','555','2212','212','2212','2') INSERT INTO dbo.TestDpln VALUES('1','525','555','2213','213','2213','2')
SELECT DISTINCT SiteIdx, COUNT(*) as "3-Digit Count" FROM dbo.TestDpln GROUP BY SiteIdx, "3-Digit" HAVING COUNT(*) > 1
but it only shows one column and one site I'm not sure how to get the '4 Digit Count' column to show up and the rest of the sites. below are the results I get so far.
I am trying to write a script to insert more than one column but the script I am making only inserts the column in the second line and I dont know why. In my code below, columnB is added to the table, but not columnA. I am stumped My sql is: <CODE> Alter table [dbName].[dbo].[tableName] Add columnA bit Default 0 Not NullAlter table [dbName].[dbo].[tableName] Add columnB bit Default 0 Not Null </CODE> thanks for your help.
