As a part of migration to .net we are redesigning sql server 7 database and moving it to sql server 2005. There are a lot of fields with dbnull value in the existing db. It would be nice to populate them with some default value while transfering data to the new datbase on sql server 2005.
What is the best way to deal with the issue, are there any possible drawbacks and problems.
Your input will be greatly appreciated.
Hello!
Is there an easy way to deal with this situation below when reading in data from a SQL Database:
int? myNullableColumn;myNullableColumn = Convert.ToInt32(datarow["datacolumn"]);
Where, ideally, 'myNullableColumn' would be 'null' if the value was 'DBNull.Value'. This does not work because Convert.ToInt32 will not convert 'DBNull.Value to null', but instead throws an error.
Is there a built in funtion that does do this?
Thanks!
Hello,
If I have a database table with column that can accept null values and I want to insert a null value into that column, what is the correct syntax?
db_cmd = New SqlCommand( "sp_stored_procedure", db_connection )
db_cmd.CommandType = CommandType.StoredProcedure
db_cmd.Parameters.Add( "@col_to_set_to_null", ??? )
ie: what expression can be used for "???"
Ideally, I want to check if a string value is empty and if so insert a null, but I have yet to see any examples, ie:
if ( str.empty ) then
insert DBNull.value into column
else
insert str into column
end if
Sincerely,
Brent D.
Am getting errors on this syntax:
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Row.myColumn = DBNull.Value
Value of type 'System.DBNull' cannot be converted to type 'String'
Any ideas? Just want to set the myColumn to NULL.
Thanks
Hi
I have only been coding in .Net for about six months, and am not sure if this is a C# problem or an SQL one. I use the Data Access Application Block in my program.
I have two optional fields on my form (RangeFrom and RangeTo). If the user chooses not to enter data into these textboxes(textbox = ""), an entry on the db is created with null values. It works.
But sometimes the user wants to enter 0 as either an upper or lower end of a range. This is where my problem comes in. My program saves 0 as null too.
In my program I do a test on the textboxes and populate two float values in a business object (objQuestion) accordingly, like this:
if (txtrangefrom.Text != "") {
objQuestion.RangeFrom=float.Parse(txtrangefrom.Text);
objQuestion.RangeTo=float.Parse(txtrangeto.Text);
}
else {
objQuestion.RangeFrom=Convert.ToSingle(null);
objQuestion.RangeTo=Convert.ToSingle(null);
}
And this is what my Business object look like. It sets up the parameters and calls the Data Access Application Block to create an entry in my table:
// fieldslist
float cvintRangeFrom;
float cvintRangeTo;
//properties
public float RangeFrom {
get {
return cvintRangeFrom;
}
set {
cvintRangeFrom = value;
}
}
public float RangeTo {
get {
return cvintRangeTo;
}
set {
cvintRangeTo = value;
}
}
// some code deleted for readability....
public int AddOption() {
string cvstrSpName = "addOption";
SqlParameter [] cvstrStoredParams = SqlHelperParameterCache.GetSpParameterSet(gcstrConnectionString, cvstrSpName, true);
//lines deleted for readability...
//check if the optional fields have a value associated with them. if not, assign dbnull.value.
cvstrStoredParams[4].Value=(cvintRangeFrom != Convert.ToSingle(null) ? cvintRangeFrom : (object)DBNull.Value);
cvstrStoredParams[5].Value=(cvintRangeTo != Convert.ToSingle(null) ? cvintRangeTo : (object)DBNull.Value);
//lines deleted for readability...
SqlHelper.ExecuteNonQuery(gcstrConnectionString, CommandType.StoredProcedure, cvstrSpName, cvstrStoredParams);
return(cvintOptionID = Convert.ToInt32(cvstrStoredParams[0].Value));
}
I use Convert.ToSingle when working with nulls (or possible nulls) because I get an error when I use float.parse for this.
The thing is, after this method AddOption has been executed, I test the value if the business object's rangefrom (that is where I entered 0) and display it on my form. I still shows a 0, but on my database table it is null!
objQuestion.AddOption();
//txtrangefrom.Text=""; on the next line I test the value in the business object...
txtrangefrom.Text=objQuestion.RangeFrom.ToString(); // and this displays 0!!!
//txtrangeto.Text="";
txtrangeto.Text=objQuestion.RangeTo.ToString();
So to me it seems the problem seems to be either the DAAB or on the SQL side, but hopefully somebody can prove me wrong! I was thinking that it could also be float.parse/Convert.ToSingle methods and have done various tests, but I am none the wiser...
Any help or ideas will be greatly appreciated...
I haven't tested it, because at the moment I can't access my SQL database
I know this is probably a stupid question, but...How can I test for DBNull when I'm using SqlDataReader.Item(string)?
I use to check it using: if(!reader.IsDBNull(2)) ...But I have found that can not count on a particular ordinal reference because some of the stored procedures select the columns in different orders.
can I do something like: if(reader["Column1"] != DBNull.Value)or with the reader["Column1"] throw an error because it is not found??
I too hate when people ask questions that they could test themselves...but I can't really test it at the moment. Any input would be greatly appreciated.
Hi!
I was trying to use the ?? operator with an DBDatareader. eg:
long lValue = Convert.ToInt32(objReader["ParentID"] ?? -1);
which throws the following exception: "... Object cannot be cast from DBNull to other types."I think the reason is, that DBNull.Value isn´t actually null. Therefore I changed my code to:
long lValue = objReader["ParentID"] != DBNull.Value ? Convert.ToInt32(objReader["ParentID"]) : -1;
Is there a better way of doing this ? Can one use the ?? operator with a Datareader anyway?
Thanks for your help!
PS: sorry for my poor english.
Hi,
I have built a few pages and a stored procedure and a class on the back of a SQL2000 dbase. and I get the following error:
Cast from type 'DBNull' to type 'String' is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Cast from type 'DBNull' to type 'String' is not valid.Source Error:
Line 111: Dim myWorkJobs As WorkJobsDATA = New WorkJobsDATA
Line 112:
Line 113: myWorkJobs.CustomerID = CStr(parameterCustomerID.Value)
Line 114: myWorkJobs.WorkID = CStr(parameterWorkID.Value)
Line 115: myWorkJobs.DateOfQuote = CStr(parameterDateOfQuote.Value).Trim()
Source File: C:InetpubwwwrootCommerceComponentsWorkJobs.vb Line: 113
My Database has 1 line of data (for testing) and all fields are populated. I am Querying a column called IndividualID which has a value of 3425243 at the moment. This is hardcoded in the aspx.vb at the moment.
ASPX VB:
Public Class WorkRequest Inherits System.Web.UI.Page
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'Put user code to initialize the page here End Sub
Private Sub btnEnter_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEnter.Click
'for now, send this value (stored in dbase under individualID) to the querystring
Dim IndividualID As String = "3425243"
Response.Redirect("WorkRequestMain.aspx?IndividualID=" & IndividualID) End SubEnd Class
COMPONENTSWorkJobs.vb (This is the class file)
Imports SystemImports System.ConfigurationImports System.DataImports System.Data.SqlClient
Namespace ASPNET.StarterKit.Commerce
Public Class WorkJobsDATA
Public CustomerID As String Public WorkID As String Public DateOfQuote As String Public QuoteAmount As String Public Title As Decimal Public FirstName As String Public Surname As String Public FirstLine As String Public District As String Public Town As String Public Postcode As String Public Telephone As String Public Requirements As String Public WorkRequired As String Public EmailAddress As String
End Class
Public Class WorkJobs
Public Function GetWorkDetails(ByVal IndividualID As String) As WorkJobsDATA
Dim myConnection As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("ConnectionString")) Dim myCommand As SqlCommand = New SqlCommand("SP_PendingQuotes", myConnection)
' Mark the Command as a SPROC myCommand.CommandType = CommandType.StoredProcedure
' Add Parameters to SPROC Dim parameterIndividualID As SqlParameter = New SqlParameter("@IndividualID", SqlDbType.NVarChar, 50) parameterIndividualID.Value = IndividualID myCommand.Parameters.Add(parameterIndividualID)
Dim parameterCustomerID As SqlParameter = New SqlParameter("@CustomerID", SqlDbType.BigInt, 8) parameterCustomerID.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterCustomerID)
Dim parameterWorkID As SqlParameter = New SqlParameter("@WorkID", SqlDbType.NVarChar, 50) parameterWorkID.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterWorkID)
Dim parameterDateOfQuote As SqlParameter = New SqlParameter("@DateOfQuote", SqlDbType.DateTime, 8) parameterDateOfQuote.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterDateOfQuote)
Dim parameterQuoteAmount As SqlParameter = New SqlParameter("@QuoteAmount", SqlDbType.Money, 8) parameterQuoteAmount.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterQuoteAmount)
Dim parameterTitle As SqlParameter = New SqlParameter("@Title", SqlDbType.NVarChar, 50) parameterTitle.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterTitle)
Dim parameterFirstName As SqlParameter = New SqlParameter("@FirstName", SqlDbType.NVarChar, 50) parameterFirstName.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterFirstName)
Dim parameterSurname As SqlParameter = New SqlParameter("@Surname", SqlDbType.NVarChar, 50) parameterSurname.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterSurname)
Dim parameterFirstLine As SqlParameter = New SqlParameter("@FirstLine ", SqlDbType.NVarChar, 50) parameterFirstLine.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterFirstLine)
Dim parameterDistrict As SqlParameter = New SqlParameter("@District", SqlDbType.NVarChar, 50) parameterDistrict.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterDistrict)
Dim parameterTown As SqlParameter = New SqlParameter("@Town", SqlDbType.NVarChar, 50) parameterTown.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterTown)
Dim parameterPostcode As SqlParameter = New SqlParameter("@Postcode", SqlDbType.NVarChar, 50) parameterPostcode.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterPostcode)
Dim parameterTelephone As SqlParameter = New SqlParameter("@Telephone", SqlDbType.NVarChar, 50) parameterTelephone.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterTelephone)
Dim parameterRequirements As SqlParameter = New SqlParameter("@Requirements", SqlDbType.NVarChar, 3500) parameterRequirements.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterRequirements)
Dim parameterWorkRequired As SqlParameter = New SqlParameter("@WorkRequired", SqlDbType.NVarChar, 3500) parameterWorkRequired.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterWorkRequired)
Dim parameterEmailAddress As SqlParameter = New SqlParameter("@EmailAddress", SqlDbType.NVarChar, 100) parameterEmailAddress.Direction = ParameterDirection.Output myCommand.Parameters.Add(parameterEmailAddress)
myConnection.Open() myCommand.ExecuteNonQuery() myConnection.Close()
parameterEmailAddress.Value.GetType()
Dim myWorkJobs As WorkJobsDATA = New WorkJobsDATA
myWorkJobs.CustomerID = CStr(parameterCustomerID.Value) myWorkJobs.WorkID = CStr(parameterWorkID.Value) myWorkJobs.DateOfQuote = CStr(parameterDateOfQuote.Value).Trim() myWorkJobs.Title = CStr(parameterTitle.Value).Trim() myWorkJobs.FirstName = CStr(parameterFirstName.Value).Trim() myWorkJobs.Surname = CStr(parameterSurname.Value).Trim() myWorkJobs.FirstLine = CStr(parameterFirstLine.Value).Trim() myWorkJobs.District = CStr(parameterDistrict.Value).Trim() myWorkJobs.Town = CStr(parameterTown.Value).Trim() myWorkJobs.Postcode = CStr(parameterPostcode.Value).Trim() myWorkJobs.Telephone = CStr(parameterTelephone.Value).Trim() myWorkJobs.Requirements = CStr(parameterRequirements.Value).Trim() myWorkJobs.WorkRequired = CStr(parameterWorkRequired.Value).Trim() myWorkJobs.EmailAddress = CStr(parameterEmailAddress.Value).Trim()
Return myWorkJobs
End Function
End ClassEnd Namespace
And finally my stored procedure:
CREATE Procedure SP_PendingQuotes( @IndividualID nvarchar, @CustomerID bigint OUTPUT, @WorkID nvarchar(50) OUTPUT, @DateOfQuote datetime OUTPUT, @QuoteAmount money OUTPUT, @Title nvarchar(50) OUTPUT, @FirstName nvarchar(50) OUTPUT, @Surname nvarchar(50) OUTPUT, @FirstLine nvarchar(50) OUTPUT, @District nvarchar(50) OUTPUT, @Town nvarchar(50) OUTPUT, @Postcode nvarchar(50) OUTPUT, @Telephone nvarchar(50) OUTPUT, @Requirements nvarchar(3500) OUTPUT, @WorkRequired nvarchar(3500) OUTPUT, @EmailAddress nvarchar(100) OUTPUT)AS
SELECT @IndividualID = IndividualID, @CustomerID = CustomerID, @WorkID = WorkID, @DateOfQuote = DateOfQuote, @QuoteAmount = QuoteAmount, @Title = Title, @FirstName = FirstName, @Surname = Surname, @FirstLine = FirstLine, @District = District, @Town = Town, @Postcode = Postcode, @Telephone = Telephone, @Requirements = Requirements, @WorkRequired = WorkRequired, @EmailAddress = EmailAddress
FROM PendingQuotes
WHERE IndividualID = @IndividualIDGO
Any ideas anyone?
I appreciate this is a big amount of data, but if anyone wants to chat to me i'm available on MSN Messenger under wolvokid@msn.com
Dear GroupI'm having a very weird problem. Any hints are greatly appreciated.I'm returning two values from a MS SQL Server 2000 stored procedure to myASP.NET Webapplication and store them in sessions.Like This:prm4 = cmd1.CreateParameterWith prm4..ParameterName = "@Sec_ProgUser_Gen"..SqlDbType = SqlDbType.VarChar..Size = 10..Direction = ParameterDirection.OutputEnd Withprm5 = cmd1.CreateParameterWith prm5..ParameterName = "@Sec_ProgUser_Key"..SqlDbType = SqlDbType.VarChar..Size = 10..Direction = ParameterDirection.OutputEnd With....cmd1.ExecuteNonQuery()....Session("Sec_ProgUser_Gen") = prm4.ValueSession("Sec_ProgUser_Key") = prm5.ValueBoth output parameters are declared as varchar(10) within the storedprocedure. If I run the stored procedure in SQL Analyzer, I'm getting astring value for each of them. E.g. @Sec_ProgUser_Gen is "1110011",@Sec_ProgUser_Key = "1100".Now the strange thing happens if I try to run the following code:Sub MyTest()Dim MyString1 As StringDim MyString2 As StringMyString1 = CStr(Session("Sec_ProgUser_Key"))....MyString2 = CStr(Session("Sec_ProgUser_Gen"))End SubIt fails in line 'MyString2 = CStr(Session("Sec_ProgUser_Gen"))' with Castfrom type 'DBNull' to type 'String' is not valid.I don't understand this. They are both the same, the only difference is thelength of the string. Help!Additional Information:The values for @Sec_ProgUser_XXX are created in the stored procedure with astatement like this:SET @Sec_ProgUser_Key = (SELECT Convert(varchar(1),Key_CanCreateKey) +Convert(varchar(1),Key_CanCreateTransaction) +Convert(varchar(1),Key_CanView) + Convert(varchar(1),Key_CanDelete) FROMi2b_proguser_securityprofile WHERE SecurityProfileID = @SecurityProfileID)The datatype of the source columns used to be bit then changed them toInteger as I thought this might cause the problem. (Although it shouldn't asthe values get converted to varchar without a problem in the storedprocedure. No fields contain NULL values, only 1 or 0.
View 1 Replies View RelatedHello,
VS 2005
I am developing the database application. This is a live database and is being used by the customer. I am to release a new version and I had to add new columns to fit the requirements DateStarted (DateTime), and TotalHours(Int) into a database table.There are already over a 1000 rows in this table.
When the customer wants to look at a record in this table and insert the value into the text boxes (Front-end), when it gets to the DateStarted or TotalHours it comes up with a error message:"
The value for column 'DateStarted' in table 'IncidentTask' is DBNull."The method for inserting is:
Code Snippet
Me.dtDateStarted.Value = Me.DsIncidentsControl.IncidentTask(0).DateStarted
What are the possible solutions to this problem? Would it mean checking for a DBNULL before displaying in the textboxes? Or updating the new column rows with an date:
Code Snippet
UPDATE IncidentTask SET DateStarted = '1/1/2005' WHERE (DateStarted IS NULL)
Many thanks for any suggestions,
Steve
How to set NULL values inside VB Script .Net?? Both causes error:
.FECHAAP = NULL
.FECHAAP = System.DBNull
Hi,I have a ShoppingCart class with a lot of properties (due to structure of a legacy Orders table). I have a ShoppingCart table also which contains a lot of the same fields as my orders table.There are a lot of fields (mostly ints) which have been initalised to 0
in my ShoppingCart class and then inserted into the ShoppingCart table
when users add items to the cart. These fields are then inserted into the orders table upon check out. When i attempt to place a new record in the orders table from the ShoppingCart table, I am receiving a bunch of Foregin Key constraint errors due to all the int fields containing 0's.What i would like to do is initalise all the properites of my ShoppingCart object to DBNull.Value but of course I can't convert type 'System.DBNull' to 'int' and i can't set to 'null' either as int's are value types.I also tried:private Int32 _fieldname = Convert.ToInt32(DBNull.Value);This compiled but gave InvalidCastException runtime error.So the only option that i can think of is, as i build the parameter array to be sent to my stored procedure, test the value of each parameter, if it is 0 (or an empty string) then don't pass the actual field value but pass DBNull.Value instead.I REALLY don't want to do this as there are around 60 parameters being passed to this procedure and this will be time consuming and messy.Any suggestions would be most appreciated!ps If i could avoid having 60 parameters being passed I would...trust me!
Hi,I have a stored procedure which returns an integer indicating whether the operation has succeeded or failed. It does this by calling set @returnvalue = (0 or 1) then select @returnvalue as returnvalue in the stored procedure code. When I run the stored procedure, inputting a set of parameters as it expects, it does what it's supposed to do and outputs a table with a single row and a single column, called returnvalue, which has a value of either 1 or 0. When I run the stored procedure through a function in asp, using the exact same set of parameters, output the results as a data set and try and convert the return as an integer I get the following error: "Object Cannot be cast from DBNull from other types"The conversion code is ..return Convert.ToInt32(ds.Tables[0].Rows[0]["returnvalue"]);And if I change "returnvalue" to anything else (like "wibble" for example) then I get a different error telling me it can't find the column named "wibble". So the dataset definitely contains a table with a column in it called returnvalue, as you expect. But it's value is, apparently, DBNull instead of an integer.How come this works when called directly through SQL and fails when called through ASP? Can anyone help? This is really doing my head in!Cheers,Matt
View 2 Replies View RelatedOk well i have a stored procedure that returns an integer between 1 and 5. My problem now is i want to check to see if the table will return NULL and if so i don't want to assign the value to my variable otherwise it'll trow an error. My code is listed below but i keep getting the error "Conversion from type 'DBNull' to type 'Integer' is not valid." i've also tried If getoptionpicked.Parameters("@optionpicked").Value = Nothing ThenIf getoptionpicked.Parameters("@optionpicked").Value Is system.dbnull Then below is the rest of the code If getoptionpicked.Parameters("@optionpicked").Value Is Nothing Then Else optionpicked = getoptionpicked.Parameters("@optionpicked").Value If optionpicked = 1 Then option1.Checked = True ElseIf optionpicked = 2 Then option2.Checked = True ElseIf optionpicked = 3 Then option3.Checked = True ElseIf optionpicked = 4 Then option4.Checked = True ElseIf optionpicked = 5 Then option5.Checked = True Else End If End If
View 1 Replies View RelatedI want restore database in my disk , but i cant . I've click and add from device. this is the screen. And when i click content , it show me this text : Object cannot be cast from DBNull to other types. (mscorlib) .
View 2 Replies View RelatedI have quite a few tables which allow NULL values. I have to struggle a lot with DBnull Exceptions :|example: col1,col2,... are all columns of type Integer and possibly NULL. var query = from person in table select new { person.col1, test = (int?) person.col2, person.col3, person.col4, ...}; As soon as my result encounters a DBNull value.. the whole query fails. This is really bad.How would I return the valid values.. and set the keys where there is no value to a null type? (e.g. int -> 0)I tried using "(int?)" but I'm not *really* sure what it does :-) Anyway.. it has no effect :-)
View 1 Replies View RelatedI'm creating an ISP for extractig data from a text file and put it in a database.
One of the fields in my textfile contains the value '0' or a date. If it's '0' it should be converted to the Null Value. The column in which it has to be saved is of type smalldatetime.
This is the code of my script where I want to check the value of the field in my textfile and convert it to a date or to Null.
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
If Row.cdDateIn = "" Or Row.cdDateIn= "0" Then
Row.cdDateInCorr = CDate(DBNull.Value)
ElseIf Row.cdDateIn_IsNull Then
Row.cdDateInCorr = CDate(DBNull.Value)
Else
Row.cdDateInCorr = CDate(Row.cdDateIn)
End If
End Sub
The error that I get is:
Validation error. Extract FinCD: Conversion of cdDateIn [753]: Eroor 30311: Value of type 'System.DBNull' cannot ben converted to 'Date'.
How do I resolve this problem ?
Hello Friends
How are you?? Friends i am getting problem in SQL Server 2005. I am deployng web application on production server as well as Databse also. In production server i inserted new field in all tables which is rowguid and its type is uniqueidentifier. The default binding for this field is newsequentialid(). In some pages it works ok but in some places it generates error like 'Conversion from type 'DBNull' to type 'String' is not valid'. Can anybody help me to solve this problem. Its urgent so plz reply me as soon as possible. I'll be very thankfull to you. Thanks in Advance.
Regards,
Hi,
I have developed a custom server control for .NET Framework 2.0. The server control has a property named BinaryData of type byte[]. I marked this property to be data bindable. Now, I have varbinary(Max) type of field in my SQL Database and I have used SQLDataSource and bound this varbinary(Max) field with the property BinaryData (byte[]) of my control. It is working fine as long as the data value is not NULL. Now, In my control, I have handled the NULL value so that no Exception is thrown. Still, when I bind this property using the SQLDataSource, I get Error "Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'." I am not sure if I can do anything to stop this erro within my control. If it is not possible from the control, then what is the workaround that I can do in my ASPX page in order to stop this error ?
Thanks a lot in advance.
How to count the number of values that exist in a row based on the values from an array of numbers. Basically the the array of numbers I want to look for are in row 1 of table [test 1] and I want to search for them and count the "out of" in table [test 2]. Excuse me for not using the easiest way to convey my question below. I guess in short I have 10 numbers and like to find how many of those numbers exist in each row. short example:
Table Name: test1
Columns: m1 (int), m2 (int), m3 (int) >>> etc
Array/Row1: 1 2 3 4 5 6 7 8 9 10
------
Table Name: test2
Columns: n1 (int), n2 (int), n3 (int), n4 (int), n5 (int)
Row 1: 3, 8, 18, 77, 12
Row 2: 1, 4, 5, 7,18, 21
Row 3: 2, 4, 6, 8, 10
Answer: 2 out of 5
Answer: 4 out of 5
Answer: 5 out of 5
Hello all,
I am trying to think my way through a solution which I believe others have probably come across... I am trying to implement a matching routine wherein I need to match an address against a high value and a low value (or, for that matter an input date vs. a start and end date) to return the desired row ... i.e. if I were to use a straight vb program I would just use the following lookup:
"SELECT DISTINCT fire_id, police_ID, fire_opt_in_out, police_opt_in_out FROM ipt_tbl " & _
" WHERE zip_code = @zip_code AND addr_prim_lo <= @street_number AND addr_prim_hi >= @street_number " & _
" AND addr_prim_oe = @addr_prim_oe AND street_pre = @street_pre AND street_name = @street_name " & _
" AND street_suff = @street_suff AND street_post = @street_post " & _
" AND (expiry_date = '' OR expiry_date = '00000000' OR expiry_date > @expiry_date)" & _
" GROUP BY fire_ID, police_ID, fire_opt_in_out, police_opt_in_out"
My question, then, is how would you perform this type of query using a lookup / merge join or script? I have not found a way to implement a way to set the input columns? I can set the straight matches without a problem, i.e. lookup zip code = input zip code, but can't think of the correct way to set comparisons, i.e. lookup value 1 <= input value AND lookup value 2 >= input value
Any suggestions?
thanks for your time...
I have a DTSX package which reads values from a fixed-length text file using a data reader and writes some of the column values from the file to an Oracle table. We have used this DTSX several times without incident but recently the process started inserting NULL values for some of the columns when there was a valid value in the source file. If we extract some of the rows from the source file into a smaller file (i.e 10 rows which incorrectly returned NULLs) and run them through the same package they write the correct values to the table, but running the complete file again results in the NULL values error. As well, if we rerun the same file multiple times the incidence of NULL values varies slightly and does not always seem to impact the same rows. I tried outputting data to a log file to see if I can determine what happens and no error messages are returned but it seems to be the case that the NULL values occur after pulling in the data via a Data Reader. Has anyone seen anything like this before or does anyone have a suggestion on how to try and get some additional debugging information around this error?
View 12 Replies View RelatedI am working with a data set containing several years' of monetary values. I have entries for past dates and the associated values, and I also have entries for future dates. I need to populate the values of the future date records with the values from the same date the previous year. Is there any way this can be done in Power Pivot?
View 6 Replies View RelatedI have a string variable
string str1="1,2,3,4,5";
I have to use the above comma separated values into a SQL Search query whose datatype is integer. How would i do this Search query in the IN Operator of SQL Server. My query is :
declare @id varchar(50)
set @id= '3,4,6,7'
set @id=(select replace(@id,'''',''))-- in below select query Id is of Integer datatype
select *from ehsservice where id in(@id)
But this query throws following error message:
Conversion failed when converting the varchar value '3,4,6,7' to data type int.
I have my stored procedure set to
Territory_code IN (@Territory)
, now , how do i enter in more then one value. When i select the multi value check box, it gives me more spaces. But then doesnt recognize the values when i put in more then one. am i doing something wrong?
The field is a Varchar 20
Hi All,
I receive the input file with some 100 columns and some 20k+ rows and I want to check the incoming input row is existed in the database or not based on 2 key columns. If the row is existed then I need to check all the columns (nearly 100 columns) values in input and the database are equal or not. If both are equal I need to treat them seperately if not there is a seperate logic. How Can I do that check for each row and for each column?
Basically the algorithm is like this, if the input file row is not existed in the database then treat that as new row else if the input row is existed in the database then check all the columns are equal or not. If all the columns are equal then treat that as existing row and do nothing else if some columns are not equal then treat this row seperately.
I found some thing to achieve the above thing.
1. Take the input row and check in the database.
2. If the row is not found in the database then treat it as new row.
3. If row is found in the database then
a) Take the source row and prepare a concatenated string for all the columns
b) Take the database row and prepare a concatenated string for all the columns
c) Find out the hash code for the 2 strings and then compare hash codes for equal.
The disadvantage of this is running a loop 2*m*n times where m is the number of rows and n is the number of columns. It should be done 2 times for input file row and database row.
Can anybody suggest a good method to do this?
What does the function "GetHashCode" for InputBuffer in method "Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)" will do?
Will it generates hash code based on all the columns values?
Pls clarify.
Regards
Venkat.
I have a situation in SSRS to get the common values between the two columns where the values are sorted comma separated as below.Ex:
ColumnA : abc,cde,efg
ColumnB : cde,xyz,abc
the result in
ColumnC : cde,abc
similarly Column A and B will have n number records. I need to right an expression or the Code function to get the required result in ColumnC. I am using SharePoint Lists as Datasource. Cannot write SQL query to achieve this requirement.
I am SSRS user, We have a .net UI from where we want to pass multi select values, but these values are comma separated in the database. how can I write a sql query such that when I select multi values on my UI, the comma separated values are take care of.
View 5 Replies View RelatedI've got some records like this:
ID_________Jan Feb...........................Dec
0000030257 0 0 0 0 0 0 1 1 1 1 1 0
where each month field has a 0 or 1, depending on if the person was enrolled that month.
I'm being asked to generate a table like this:
ID_________ Start_Date End_Date
0000030257 July 1, 2014 Nov 30, 2014
Is there some slam dunk way to do this without a bunch of If/Then statements?
The editor compressed all my space fields, so the column headers are off in some places.
I have a script that I use after some amount of data massaging (not shown). I would like to be able to change the
1) denominator value (the value 8 in line 32 of my code) based on how many columns are selected by the where clause:
where left(CapNumber,charindex('_', CapNumber)-1) = 1where capNumber is a value like [1_1], [1_4], [1_6]...[1_9] capNumber can be any values from [1_1]...[14_10] depending upon the specialty value (example: Allergy) and the final number after the equal sign is a number from 1 to 14)
2) I'd like to dynamically determine the series depending upon which values correspond to the specialty and run for each where: left(CapNumber,charindex('_', CapNumber)-1) = n. n is a number between 1 and 14.
3) finally I'd like to dynamically determine the columns in line 31 (4th line from the bottom)
If I do it by hand it's 23 * 14 separate runs to get separate results for each CapNumber series within specialty. The capNumber series is like [1_1], [1_2], [1_3],[1_4], [1_5], [1_6], [1_7], [1_8],[1_9]
...
[8_4],[8_7]
...
[14_1], [14_2],...[14_10]
etc.
Again, the series are usually discontinuous and specific to each specialty.
Here's the portion of the script (it's at the end) that I'm talking about:
--change values in square brackets below for each specialty as needed and change the denom number in the very last query.
if object_id('tempdb..#tempAllergy') is not null
drop table #tempAllergy
select *
into #tempAllergy
from
dbo.#temp2 T
[Code] ....
If I were to do it manually I'd uncomment each series line in turn and comment the one I just ran.
I have a table that lists math Calculations with "User Friendly Names" that look like the following:
([Sales Units]*[AUR])
([Comp Sales Units]*[Comp AUR])
I need to replace all the "User Friendly Names" with "System Names" in the calculations, i.e., I need "Sales Units" to be replaced with "cSalesUnits", "AUR" replaced with "cAUR", "Comp Sales Units" with "cCompSalesUnits", and "Comp AUR" with "cCompAUR". (It isn't always as easy as removing spaces and added 'c' to the beginning of the string...)
The new formulas need to look like the following:
([cSalesUnits]*[cAUR])
([cCompSalesUnits]*[cCompAUR])
I have created a CTE of all the "Look-up" values, and have tried all kinds of joins, and other functions to achieve this, but so far nothing has quite worked.
How can I accomplish this?
Here is some SQL for set up. There are over 500 formulas that need updating with over 400 different "look up" possibilities, so hard coding something isn't really an option.
DECLARE @Synonyms TABLE
(
UserFriendlyName VARCHAR(128)
, SystemNames VARCHAR(128)
)
INSERT INTO @Synonyms
( UserFriendlyName, SystemNames )
[Code] .....
I am working with SP. How can we find out values of parameters when the SP is executed with the default values?
View 9 Replies View Related[RS 2005]
Given the starting and stopping points (time values), how do I generate values between these points.
For example, if I have 08 (representing Hour) as a starting point and 12 as a stopping point.
From this I would like to generate a data sequence like 08, 09, 10, 11, and 12.
So how do I accomplish this? In SQL or in the RS?
The only thing I can think of is using a WHILE loop and a temporary table in SQL (not to keen on doing this).
//Håkan