is taking a (presumably) date object IBSSDR.Item("EventDate") and putting it directly into that function via string concatenation. As usual, put breakpoints in place and inspect the value of .CommandText - this will show you how VB has formatted that date field, using its default (local) formatting, as input to the function.
You will most likely need to use some explicit formatting on the VB side to create a string that Oracle will be able to parse into a date.
But, as Richard always says, don't build your SQL by string concatenation - parameterise it.
DateTime values do not have a format while stored in the database.
The format is only applied when the value is displayed, either by the query tool you're using to test the query or by your own application. There is no format when stored by the database and that's what's tripping you up.
You're trying to convert date strings being passed to the parameters to date values in the SQL VALUES clause. Don't do that because all you have to do is pass in DateTime values WITHOUT using "to_date" in the SQL.
And what's with the "" & garbage? Get rid of stuff. It's useless, unless you want to make the code harder to read and debug.
The datetime valueis taking form another database (Firebird) using Datareader(IBSDDR.item("")), so i don't need to convert to_date when insert into ORacle sir?...Plz guide me, thanks in advanced Smile | :)
Sorry, this always seems to happen after I post but I think I get it now. I'm trying to assign a value to a class. It compiles if i do this:
Private Sub ab(Optional ByVal val As EncryptKey = Nothing)
I was confused by this:
Private Sub ab(Optional ByVal val As String = "")
I don't know how String is defined to be able to accept this but what I'm doing won't work.
Sorry again for the ugly post.
Sorry about the subject line; didn't know how to describe my problem.
Through searching around the internet i've come up with this class to be able to process a string value.
Private _string As String = String.Empty
Public Sub New(ByVal value As String)
' Remove white space
Me._string = value.Trim()
Public Shared Widening Operator CType(ByVal value As String) As EncryptKey
Return New EncryptKey(value)
Public Overrides Function ToString() As String
Public Function Length() As Integer
Public Function IsEmpty() As Boolean
Return (_string.Length = 0)
Public Shared Operator +(ByVal s1 As EncryptKey, ByVal s2 As EncryptKey) As EncryptKey
' Concat and remove white space
Dim temp As String = (s1._string + s2._string).Trim()
Return New EncryptKey(temp)
The class is working except for this case:
Private Sub ab(Optional ByVal val As EncryptKey = "")
' Results in this error for the Optional assigment:
'error BC30060: Conversion from 'String' to 'EncryptKey' cannot occur in a constant expression.
Is there a way to make the class able to accept this assignment as an Optional parameter?
I'm try to fetch the early date value from my event list using MIN but cannot.
Here my code :
<pre>IBSSCMD.CommandText = "SELECT c.NAME AS NAME,c.cardholderid AS cardholderid, c.EMAIL AS EMAIL,A.PRIORITY, MIN(a.eventdate) AS EVENTDATE " & _
"FROM EVENT a , CARDHOLDER c , COMMCHANNEL h" & _
" WHERE(a.CARDID = c.CARDID And a.CARDHOLDERID = c.CARDHOLDERID)" & _
" AND a.COMMCHANNELID = h.COMMCHANNELID AND a.EVENTDATE >= CAST('TODAY' AS DATE) AND a.EVENTMSG = 'Access Granted' " & _
" AND a.PRIORITY IS NULL " & _
"group by c.NAME,c.cardholderid,c.email,A.PRIORITY ;"
Using FBCMD AsNew FbCommand("UPDATE EVENT SET PRIORITY = '1' WHERE CARDHOLDERID = @CARDHOLDERID AND EVENTDATE >= CAST('TODAY' AS DATE) AND EVENTMSG = 'Access Granted'", IBSSCN)
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
Although you're using VB.Net, this is not a VB.Net question. Suggest you post under Database & Sysadmin / Database as your issue is with SQL. You should also give us some idea as to what IBSSDR may contain (presumably a datareader from another query), and probably the table definitions and example data too. For instance, will your query (IBSSCMD) be returning a single row or multiple rows?
Hi guys, I just need a little help in retrieving date value from database.
The format of date in date field is "2015-07-03 00:00:00.000"
but when I retrieve it the format automatically change into "07/03/2015 12:00:00"
How can I retrieve the date value as is? I'm using vb.net. Thanks in advance for the help.