Problem with NULL fields
when I retrieve data from MySql if one of the fields is null the rest of the rows in the same column get null values, I dont know why.
Microsoft Visual Studio 2002
Ok i think i have a solution
Now insteadof using "mysql-connector-net-1.0.0-beta.zip "
I use "bytefx" and everything is working.
Can u recommend me who is the best MySql connection?
About year ago I tried different MySql providers. But due to the problems they had I had to use Odbc.Net and MyODBC instead. Then, at...Problem in extracting null value from a grid view field to add to a database table field
Hi,I have a grid view and I am extracting a field value from the gridview corresponding to the chosen record via a radio button. Now for a particular record the field in grid view in asp.net is showing null value (blank). However when I am extracting this field value to add it to a database table the field in the table is populated by " ". I would like the field to be populated with null or even "". I am not sure how to do this.
The following approach is failing:
If SelectedGridRow.Cells(5).Text = &qu...problems with a null database field
I'm displaying the data from a particular row of a database in a page. In the code behind I have this:If Not IsDBNull(mate.EARLIEST_DATE) Then LblERD.Text = mate.EARLIEST_DATEEnd IfI'm getting this error: Conversion from type 'DBNull' to type 'String' is not valid.But I'm not getting this on my page, but on one of the pages generated by VS. I get the error when I run template.aspx, nd this is the source page: Source File: C:\WINNT\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\wap\b577f4fa\3ae10d8a\App_Code.qtk6xv56.4.vb Line: 1351&nbs...NULL field matching problem...
I am working on a script that parses a csv file. The actual
field delimiters in the file are pipes |. The problem I am running into
is that if the field is empty, then the database is getting a '0' rather
than 'NULL' as it should. The column is setup properly with NULLs
allowed and the default value of NULL. Here is a sample of the file
erial number|Sandbox|hostname|0||CHTSAN|UNKNOWN|ROBERT C|JONES SR.|
The problem on this line is the field between '0' and 'CHT...Convert Delphi 5 ADO App to Delphi 2007 ADO.NET
I have an appliction tha that is writen in Delphi 5 with ADOConnetion, ADOTable, and ADOQuery components.
I need to upgrade to Delphi 2007 and use ADO.NET.
I have the program building in with Delphi 2007. Is there anything I need to do to convert the ADO to ADO.NET?
> I need to upgrade to Delphi 2007 and use ADO.NET.
With best regards,
AnyDAC (www.anydac.com) - Oracle, MS SQL Server, IBM DB2, MySQL,
Firebird, Interbase, PostgreSQL, Sybase ASA, SQLite, MS Access, DBX,
ODBC, InMem - universal high-speed native data access engine
Reasons for ...Checking for Null values in ADO field
I am trying to check whether or not
HERE is my some of my code:
Dim cn As OleDbConnection = New OleDbConnection(ConfigurationSettings.AppSettings("ConnectionString"))
Dim cmdHeader As OleDbCommand = New OleDbCommand(strSQL, cn)
Dim rdHeader As OleDbDataReader
rdHeader = cmdHeader.ExecuteReader
So you can see that I am loading a OleDbDataReader from my table. This code works fine.
Now I want to check to see if one of the fields is null. I have tried ALL of the following:
If Val(0 & rdH...ADO.NET to XML and null field
I am getting XML version of a Dataset using ds.GetXml(). If the db field is null or empty, how do I get the XML to emit a <fieldName /> rather then nothing?
Here's a couple articles on why it happens and some work arounds.
Hmmm neither of those seem like a good work around for this problem - i would even go as far as to say bug in ADO.NET. Does anyone have any suggestions for me before I code my own function to interate through a RS and ...Problem on ASA with Delphi via ADO
I just installed ASA 60 days trial and I am testing with Delphi 6 and ADO,
using TADODataset components. I am getting the following problems: when I
post any record, trailing blanks are inserted in every TStringField (VARCHAR
in ASA). When I post records with TMemoField or TBlobField (LONG VARCHAR),
it raises an "Count field
I did't see this behaviour in other servers.
mybe it's help:
// fs : TFileStream;
// bs : TBlobStream;
//with Table1...Delphi 5+ ADO ASAProv Problem
I try to connect from Delphi to ASA 7.03 with ADO. Via the ODBC Provider
everthing seems to work. When I try to use ASAProv I can connect, but after
connect the mode property of the connection is forced to cmUnknown and any
attempt to open a result set lead to the error
"Object or provider is not capable of performing requested operation".
This is the same if I use the Connection string dialog or if connect
Encrypted=True;Persist Security Info=True;User ID=dba;Data
Sourc...Problem updating null decimal fields
Hi,I have a FormView with standard insert /update strings. I have a problem during update where if I leave the text box for the decimal database fields blank (database values are null) and try to update I get the
Input string was not in a correct format. if I type a number in these boxes everything updates fine. I am not sure why I can not leave the textbox values blank. It almost seems like the text box is populated with "NULL" and then during update it is trying to write a string into a decimal field but I am not sure. Thanks...Problem with SQL Update when a field is NULL
I am having a problem with an update statement. I am using compareallvalues with a SQL data source. When one of the old values is null the update does not go through.
i.e. This does not work if something is NULL
UPDATE myTable SET something = @somethingWHERE ID = @o_ID AND something = @o_something
The reason is ANSI SQL NULL is an unknown so comparing NULL to NULL is not NULL but an unknown. Try the link below for work around. Hope this helps.
http://www.sqlservercentral.com/columnists/mcoles/fourrulesfornulls_printversion.aspKind regards,Gift Peddie
Will ...Problems, problems, problems
Name: Hans Halvorsen
Summary: Problems, problems, problems
I downloaded Thunderbird some time ago, and I was over-satisfied whit it
and how well it worked. In fact it worked 100% PERFECTLY UNTIL I got an
newer update version of it. Since then I' ve had nothing BUT trouble!
I've checked adresses, notes, password, deleted accounts and made new
one's, checked sign-ins and sign-outs, passwords inside and out, upside
and down, so many times that my frustration now is about to turn into
pure and major ...problem with null in not null column.
How I can correct my null in "not null column" ? Have sybase any tools
for correcting this problem ?
It because of power failure :((
> How I can correct my null in "not null column" ? Have sybase any tools
> for correcting this problem ?
1) Don't try to put a NULL into a column that does not allow NULL's.
2) Rebuild the table so that your columns will accept NULL's.
> It because of power failure :((
Huh? Could you explain this one? Right off the bat I can't see any
reason why the loss...Problems problems and problems.
Summary: Problems problems and problems.
I am not specific, but in short I can not use This site to listen music
anymore, while I can in IE explorer. Just to let you guys know, new
version messed something up.
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