How To Check If A Exected Sql String In Null Or Empty
Im quering a database for a user name and p/w. Error Type:
How can i check if the requested data is Null or Empty before I try and request the data, when it throws the error message
ADODB.Field (0x800A0BCD)
Either BOF or EOF is True, or the current record has been deleted. Requested operation requires a current record. have tried:
if len(trim("" & rstSearch.Fields("data").Value)) = 0 then
but the rstSearch.Fields("data").Value is causing the same error message
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My typical code to call an Stored Proc in ASP is as follows ...
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I am trying to write a conditional IF statement where one of the conditions is,
Field1 is Not Empty
Field2 is Not Null
I have tried,
IsEmpty(Field1) = False
Field1 = !Empty
Field1 Is Not Empty
And many variations. Can anyone tell me how you would write this condition? VBscript, server side.
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how to check any value in asp that it is null or not.
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Is there an easier way to check if any of the fields returned in a select statement have null values? After running this command:
set rs = conn.execute("select A,B,C,D,E,F,G,H,I,J from SomeTable
where...")
I could check each field this way:
If IsNull(rs("A") Then
Response.Write("The value of A is null")
Else
Response.Write("The value of A is " & rs("A"))
End If
If IsNull(rs("B") Then
Response.Write("The value of B is null")
Else
Response.Write("The value of B is " & rs("B"))
End If
If IsNull(rs("C") Then
Response.Write("The value of C is null")
Else
Response.Write("The value of C is " & rs("C"))
End If
etc.
But is there a simpler way? Also, my "solution" probably wouldn't work if more than one recordset was returned...
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I need to check each item in an array to see if it is empty or not. The array is created by a bunch of Request.Form's. I think I almost have it but I can't seem to get it right.
I need to check it, and if empty (null) I need to insert something. It can't be empty because it is used on an INSERT SQL thing. I would like it to be something like this:
A for loop running through each of the items in the array An if statement in the loop to check if it is empty or not. I haven't quite got down the If conditions in ASP.
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I'm listing records from my db and each company has 3 address lines ie address, address2, address3. In most cases 3 and sometimes 2 are empty. As my ASP looks like this
[VBS]
<p><strong>Address/strong> <%= rs("Address") %><br>
<%= rs("Address2") %><br>
<%= rs("Address3") %><br>
<strong>Town/strong> <%= rs("Town") %><br>
<strong>Post Code/strong><%= rs("PostCode") %><br>
<strong>Telephone/strong> <%= rs("Telephone") %>
[/VBS]
then I end up with the first line of the address and two blank lines. How could I avoid that by checking if the fields have content, only then display them?
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I have setup a database for user to upload product image and it name and desciption. Since there is no product upload by user, it will display this error:
ADODB.Field error '800a0bcd'
Either BOF or EOF is True, or the current record has been deleted. Requested operation requires a current record.
/i-Metz/iMetzAdminADs.asp, line 295
Therefore i wrote this script to counter the error:
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I am trying to block the user from access the paper if there is already 1 window open, so i trying to check if the session for the paper already started....
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Here is part of my code:
If fs.FileExists(Server.MapPath("filename.htm") Then
set f=fs.OpenTextFile(Server.MapPath("filename.htm"))
If f.ReadLine <> "" Then
First, I check to see if the file exists. If so, then I open the file for reading. Then, I read the first line to see if it equals "".
The problem here, though, is that if the file is empty, I'll get a "Input past end of file" error. So, how do I check to see if it's empty without reading the lines?
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I have a form in which several elements are expected to be all digits. Some of those elements can be left empty, but if specified they must be all digits. I have this Sub to edit them: ....
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users are entering data, but when they submit the form, once in a while
request.forms returns an empty string instead of the string its
supposed to get. Anyone seen this behavior before? Is there a
solution
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I'm reading from an Excel spreadsheet to insert the data into a database.
The problem is with a column that contains both numerical and text values. I'm inserting this column into a text field in the database, but for some reason any value that contains a text character, EG K121212, is returning NULL when it's read.
I'm debugging at the moment by writing the values out to the screen using:-
if not isnull(excelrs.fields.item(2).value) then response.write("<td>"&excelrs.fields.item(2).value&"</td>") else response.write("<td>NULL VALUE</td>")
If the column contains 121212 then it writes to the screen. If it contains K121212, it writes NULL VALUE.
I've tried converting the whole column to text; same result. I've tried putting a ' infront of the text values; same result. I'm sure I had this problem before and fixed it, but it's happening again and nothing I try is sorting it.
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HTTP_REFERER and Response.Redirect is returning an empty string, anybody knows a workaround?
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I have been looking for a way to check to see if a string contains another string i.e.
"The dog jumped the fence."
If i was to check for dog it would return true. I saw that some people have used the InStr function but i have not had any luck.
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I have a custom function for checking if a variable has been set or not to make the code easier to read, as well as to keep it shorter.
However, I'm getting errors that "Object Variable not Set", even after I've already checked for null and empty. Code:
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What is the best way to check each character within a string?
For doing something like encryption, where you check character 1 and replace
it with a different character.. then check character 2 and replace it with a
different character.... etc.... until completing the string?
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How do i check the whether a string entered...matches a fixed format that i have created? suppose i have to checkk whether a string entered is of this format..
F-##
( where '#' is any digit)..
For example if the user enters F-02 ..Then the check would return TRUE..
If the user enters F02 ...Then the check would return false..
I would like to do this check on the server side...ASP ( not javascript)]
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I have an interesting situation that needs to be addressed ASAP.
I am running a standard SQL Query in ASP to retrieve some rows/columns from a table that's on a SQL Server 2000 database. I put the results of that query into a RecordSet, and then use the GetRows function to push the results that are in the recordset into an array variable. In the query that I am running, 39 columns and 2 rows are returned.
The GetRows function appears to be working - the array variable is being created with the proper dimensions. However, the values of the different "cells" of the array are not showing up correctly. The first and the last column values for each row are correct, yet everything else in between is blank, empty, NULL, or whatever.
In other words: ArrayVariable(0,0) shows up correctly, ArrayVariable(38,0) shows up correctly, but everything in between is null.
I did a test on the RecordSet and discovered that it was the culprit - it wasn't being filled in properly. This is strange, though, because the select query that I run in the ASP code to create the recordset returns perfect results when I run it on the SQL Server 2K database.
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I have created a table. How do I limit the result of that table to only show the entries that have the "address" filled in. In Access here is the sql coding to acheive the results.
SELECT Dropoffs.City, Dropoffs.StateInitials, Dropoffs.AcceptedItems, Dropoffs.MoreInfo, zipcodes.Address
FROM zipcodes, Dropoffs
WHERE (((zipcodes.Address) Is Not Null));
How do I set this up in my VBSCRIPT page?
Here is my working page so that you can see what I am trying to acheive. When the page comes up you can type 45255 for the zipcode.
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I try to select the not null value from the database in column comment.
select s.ques_no, s.task_no, s.goal_no, g.comment from step_tab s, gen_tab g where s.id = g.id and g.comment is not null
But it still return all the null value.
Can anyone please tell me why?
Besides that, why i can't increase the number that i selected from the database.
id_no = rs("id_no")
id_no = cint(id_no") + 1
Why the id_no never increase even i had "+1"?
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I might be doing this wrong but I am modifying the body tag depending on what a recordset tells me.
It works fine if the value exist, but if it is returned null then I can't get it to work ...
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I had set up the following 'trouble-shooting' code to determine how a certain value was being 'evaluated' for lack of a better term. The field "status" in this example has no value in it.
<%
status = RS("status")
If isnull(status) Then
response.write("status is null")
end if
if status = "" Then
response.write("status has no value")
end if
%>
The database field 'status' has no value in it. If I run the above trouble-shooting code, the first statement "status is null" will print out. If I remove the first if statement and use the second if statement 'if status = "" ...', the statement will NOT print indicating that the value <> "".
Questions: What is the difference between something not having a value and NULL?
Most importantly, what is the PROPER way to check for a field not having a value in it? In the past I have always checked for a 'no value' using double quotes.
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I'm using the following code to, firstly erase any old logins the user has. Then to check whether the page has been idle for longer than 30 minutes or not. If it has been idle for longer than 30 mins then the user will be required to input their password again. However it's not working! Code:
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I'm developing an Asp.NET system to take a CSV file uploaded via the web, parse it, and insert the values into an SQL database. My sticking point comes when I try to split() the string returned by readline() on the file.
The following code snippet works for me:
tokens = "one,two,three,four".Split(",")
for each token in tokens
response.write("<td>"+token+"</td>")
next
However, if I take the next line in the CSV, read using StreamReader.ReadLine on the PostedFile.InputStream, I receive "Object reference not set to an instance of an object." which I have narrowed down to be my string holding the line. Further investigation reveals that no other string member functions work on my line (.ToCharArray, .ToString, etc).
I suspect that StreamReader.ReadLine is not correctly returning a string, even though Response.Write(line) displays what I would expect .....
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Microsoft OLE DB Provider for SQL Server (0x80040E2F)
Cannot insert the value NULL into column 'ContactID', table 'ka0506a.ka0506a.contacts'; column does not allow nulls. INSERT fails.
/submitcontact.asp, line 15
What happened is i used to used MS Access and ContactID is an Autonmuber field, and now my connection is set to MS SQL so it's giving me this error, what's causing this error to happen and how can i change it ?
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I have a condition that will run depending if a field in the database is NULL. It will not run at all, and I tried various way to write it but none works so far
'not working
If assignee = DBNull Then
'not working
If assignee = null Then
'not working
If assignee = "" Then
If I write assignee to the page then the value of assignee will write if it has a value and nothing if it is null.
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I have a data entry form. If the user submits the form without entering any data, the record should be inserted with null entries for the respective fields.
But when i execute the INSERT SQL query with these null values, it gives me an error.
This is vat I am doing:
<%
.....
address = request.form("address")
if request.form("Age")= "" then
ageValue=""
.....
.....
%>
I use these values in SQL query
This is the SQL statement when the above is executed
" INSERT INTO tblStatistics (Age,address) VALUES (, aaa)"
Because of no value for age, the query is not gettin executed.
I dont want a 0, I want a nul entry (<null>).
Could someone throw some light on how to set the age field to null?
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Can someone help with an error? It's a StoreFront store. right after the credit card screen is gives me the error. I get the following:
Microsoft VBScript runtime error '800a005e'
Invalid use of Null: 'replace' /ssl/SFLib/incGeneral.asp, line 85
--------------------------------------------
84 Function makeInputSafe(str)
85 makeInputSafe=replace(str, "'", "''")
86 End Function
-------------------------------------------
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i had select the data from the database. The null value are returned.
How can i convert the null value to integer so that i can add some value for it??
Actually i try to use both of this statement but there's nothing come out...when i try to selecte the data in the database, the null value are returned
if rs("max_id") = "NULL" then
id_no = 1
response.write "id_no = " &id_no& "<br>"
end if
and
if rs("max_id") = "" then
id_no = 1
response.write "id_no = " &id_no& "<br>"
end if
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I have 2 questions about SQL server. First, what should i do about allowing NULL values when designing the database? What difference does it make? And if I disallow NULL values, should i enter default values?
Second, when adding new records to database with recordset.addnew, what SELECT statment, cursor, and lock type should i use?
I've always used "SELECT * FROM Table" and adOpenStatic, and adLockOptimistic. This SELECT statement looks very inefficient to me, but I don't know what else to use.
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I am updating a table depending on the user input that could be left blank for the numeric as well as the string field. I am getting an error if I do the following:
Dim a = null
sql = "update country set number =" & a
If I do ... sql = "update country set number = null", it works fine.
How can I use the variable to change the value to null.
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I have set up a database, myDB, in MS Access. one of my Table, myTable, has columns Col1, Col2, ..., Col10. Depending on some scenarios, I insert some values in some (but not all) of the columns. Now I want to delete those records that their col3 is null or nothing is set.
I used col3= '' and col3=NULL in the below statement
objRS.Open "SELECT * FROM myTable WHERE col3 = '' ", myDB, , , adCmdText
but none of them works.How to delete a record based on Null value filtering?
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