Need To Set A Field In A Select Statement Equal To Yes Or No If Record Exists In Separate Table
Hey gang,
I've got a query and I'm really not sure how to get what I need. I've got a unix datasource that I've setup a linked server for on my SQL database so I'm using Select * From OpenQuery(DataSource, 'Query')
I am able to select all of the records from the first two tables that I need. The problem I'm having is the last step. I need a field in the select statement that is going to be a simple yes or no based off of if a customer number is present in a different table. The table that I need to look into can have up to 99 instances of the customer number. It's a "Note" table that stores a string, the customer number and the sequence number of the note. Obviously I don't want to do a straight join and query because I don't want to get 99 duplicates records in the query I'm already pulling.
Here's my current Query this works fine:
Select *From OpenQuery(UnixData, 'Select CPAREC.CustomerNo, CPBASC_All.CustorCompName, CPAREC.DateAdded, CPAREC.Terms, CPAREC.CreditLimit, CPAREC.PowerNum
From CPAREC Inner Join CPBASC_All on CPAREC.CustomerNo = CPBASC_All.CustomerNo
Where DateAdded >= #12/01/07# and DateAdded <= #12/31/07#')
What I need to add is one more column to the results of this query that will let me know if the Customer number is found in a "Notes" table. This table has 3 fields CustomerNo, SequenceNo, Note.
I don't want to join and select on customer number as the customer number maybe repeated as much as 99 times in the Notes table. I just need to know if a single instance of the customer number was found in that table so I can set a column in my select statement as NotesExist (Yes or No)
Any advice would be greatly appreciated.
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Hi, This is on Sybase but I'm guessing that the same situation would happen on SQL Server. (Please confirm if you know). I'm looking at these new databases and I'm seeing code similar to this all over the place: if not exists (select 1 from dbo.t1 where f1 = @p1) begin select @errno = @errno | 1 end There's a unique clustered in dex on t1.f1. The execution plan shows this for this statement: FROM TABLE dbo.t1 EXISTS TABLE : nested iteration. Table Scan. Forward scan. Positioning at start of table. It's not using my index!!!!! It seems to be the case with EXISTS statements. Can anybody confirm? I also hinted to use the index but it still didn't use it. If the existence check really doesn't use the index, what's a good code alternative to this check? I did this and it's working great but I wonder if there's a better alternative. I don't really like doing the SET ROWCOUNT 1 and then SET ROWCOUNT 0 thing. SELECT TOP 1 won't work on Sybase, :-(. SET ROWCOUNT 1 SELECT @cnt = (SELECT 1 FROM dbo.t1 (index ix01) WHERE f1 = @p1 ) SET ROWCOUNT 0 Appreciate your help.
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Check If Record Exists
Hi, I was wondering if someone can help. In vb.net what is the best way to check if a record exists if you are using an sql data reader? For my application I need to display a button control (make it visible on the page) if a record is available after executing my sql select statement. cheers Mark :)
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Check If Record Exists
Hello,I created the following SQL script to check if a record exists:IF (EXISTS (SELECT LevelName FROM dbo.by27_Levels WHERE LOWER(@LevelName) = LOWER(LevelName))) Return (1)ELSE Return (0)And I also found in a web page another solution:IF EXISTS(SELECT 1 FROM TABLENAME WHERE LevelName=@LevelName) SELECT 1ELSE SELECT 0- Which approach should I use?- Why "SELECT 1 FROM"?- And when should I use SELECT or RETURN?All I need is to know if the record exists ... nothing else.I will use this procedure on an ASP.NET 2.0 / C# web site.I am not sure if this important but anyway ...Thank You,Miguel
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Don't Insert If Record Exists
/*if key values exist don't insert new record*/ SELECT /*if exists don't insert*/ CASE WHEN ISNULL(gradeId, -1) = -1 THEN INSERT INTO tblScores (gtStudentId, assignmentId, score) VALUES (@nStudent, @nAssignment, 0) END FROM tblScores WHERE gtStudentId = @nStudent AND assignmentId = @nAssignment tblScores has two fields comprising its primary key (gtStudentId, assignmentId) and the gradeId field is a required filed in this table. I'm getting syntax errors when I click check syntax (near keywords insert from and end). one other note: this CASE END is nested inside a BEGIN END loop, is this the problem? Is the 'End" of the 'Case' closing the 'End' of the 'Begin'? thanks
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Insert Record If None Exists
Hello folks, I am new to msSQL and ASP, I need some help writing an SQL statement that will first check to see if a combination or record exists, if none found thant it will add it. I am working a section of a site that adds favorites to the database. Each user can have more that one favorite hence it has to check for that unique combination of the fields, UserID and FavID My Code: Dim objConnection, objRecordset, strSQL Dim strFavID, strUserID strFavID = request.Form("favid") strUserID = request.Form("userid") Set objConnection = Server.CreateObject("ADODB.Connection") Set objRecordset = Server.CreateObject("ADODB.Recordset") objConnection.Open Application("ConnectionString") strSQL = "INSERT INTO FAV (UserID,FavID) (SELECT DISTINCT " & strUserID & " AS UserID " & _ strFavID & " AS FavID" & " FROM FAV)" & _ " WHERE " & strUserID & " & " & strFavID & " NOT IN (SELECT UserID, FavID FROM FAV)" response.Write(strSQL) 'response.End() If strFavID <> "" Then On Error Resume Next objConnection.Execute(strSQL) objConnection.Close Set objConnection = Nothing End If This code is giving me a syntax error, how do I write the correct statement. I am using MS Access 2k Thanks for your help
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Splitting One Data Field With Hyphens To Separate Records
I receive a file that will have hyphens between data items such as 123-aed-edr-45r-ui9 1-ed3-45r-rrr-98u I need to split the values to load into a table that will hold the 5 separate data itens. The fields will always have the hyphens but could be different lengths. Any idea on a best approach to split this in tsql
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Select The Insert Value Into Field In Another Table!!!!!!
i have tbl_location which includes userid, building, room. i combine the building and room into one feild called mailstop SELECT Userid, Building +'/'+Room AS mailstop FROM tbl_Location i then want to take this recordset and insert it into a field called mailstop in my employee table. but they must based upon the userid of the location table and the userid of the employee table. so the userid of the location table must match the userid of the employee table and insert that mailstop value into the mailstop feild in employee table. i want to get this right the first time. any help would be greatly appreciated.
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SELECT Table Field Names
I need a statement or sp that will display, for a given user database, an individual table's fieldnames, datatype, and length. Any help is appreciated. Randy
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Referencing A Field In Another Table Within A SELECT
I have a SELECT line in an UPDATE query that looks like this: UPDATE Terms SET Field1 = LEFT(Emp_SSN,9), Field2 = Health, Field3 = (SELECT Emp_PayCode FROM Rates WHERE Health = ID) FROM Inserted,Rates WHERE Terms.Field1 = Emp_SSN On the Field3 update, how do I evaluate Emp_PayCode. Emp_PayCode is a field in another table (Employees). The value of that field is Instructional24 and if I hard code that value into the SELECT line, it works fine and returns the value ($0.00).
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Looking For Field Name From Table On Select Criteria
Hari writes "Sub:- looking for Field name from table on select criteria dear friends I have an table [assosories] which have 100 fields. initial 10 fields have some date, varchar, int types rest 90 are bool type. for a single row I need to know the field name which have true vaules in rest 90 fields I need to insert this field name into another table as a row. Thanks HARI"
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How To Select Field Names Of Table?
Can someone write a query that select all the fields of tables in database that have type 'image'? Something like this: Select TableName, FieldName FROM TableWhereTheyKeepThoseThings WHERE TableWhereTheyKeepThoseThings.FieldType='Image' ... olny it should work :)
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Help With Select Statement - From XML Table
I'm trying to get the <Title> node value returned in the select statement below, but cant quite get it to work. I have the <ID> node being returned in the statement, but not the title. Any help is apprecited. param ids = '<Collection><Content><ID>1</ID><Title>Document 1</Title></Content>< Content><ID>2</ID><Title>Document 2</Title></Content></Collection>' CREATE PROCEDURE [GetDownloads](@Ids xml) AS DECLARE @ResearchDocuments TABLE (ID int) INSERT INTO @ResearchDocuments (ID) SELECT ParamValues.ID.value('.','VARCHAR(20)') FROM @Ids.nodes('/Collection/Content/ID') as ParamValues(ID) SELECT * FROM research_downloads INNER JOIN @ResearchDocuments rd ON research_downloads.doc_id = rd.ID Where research_downloads.post_sf = 0
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