Access Sql Replace Statement Null/empty Strings
Jul 31, 2007
Im trying to concatenate a bunch of fields (50 arghh) which each are either blank or just contain one letter. This was someone elses setup for an attendance register which I think is an odd way of doing it. I would have used one field and then to get the mark for a week take a substring at the appropriate position. Anyway im trying to replace an empty string field with a letter to represent the register hasn't been marked using sql statement:
SELECT [400 Student Marks].acad_period, [400 Student Marks].student_id, [400 Student Marks].register_id, [400 Student Marks].register_group, Replace([1],"","U") AS attendance
FROM [400 Student Marks];
[1] being the first register week then I would have concatenated with [2] etc...
This however causes an error each time on the attendance field so im guessing replace doesn't work on empty strings. Is there a way round this/alternative.
Thanks for any advice.
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Nov 2, 2006
Hello,
I am having trouble with a query. I have a number of blanks for a field and I tried using the expression from the help:
=IIf(IsNull([fieldname]),"Unknown",Format([fieldname],"@;LS"))
But my result set is still a lot of blanks.
This is the expression I was trying to use:
IIf(IsNull([tblMainpersondata]![MailingAddrLine2]),[tblMainpersondata]![MailingAddrLine1],[tblMainpersondata]![MailingAddrLine2])
On most of these, the result was a blank, instead of MailingAddrLine1. If there was visible data for MailingAddrLine2, it appeared.
Any help or suggestions would be greatly appreciated!
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Jan 24, 2012
I've built a form on my Access database that invites a user to enter a start date and an end date into two textboxes. When i press a command button, a parameter query runs which uses the two textboxes as the parameter's criteria. However, to ensure that both textboxes have a data entry, i have tried entering in some VBA that prompts the user to enter in a date if its left null...then set focus to that textbox: Here it is...
If IsNull(Me.txtWeight1) Then MsgBox "You must enter a minimum weight!"
Me.txtWeight1.SetFocus
Else
If IsNull(Me.txtWeight2) Then MsgBox "You must enter a maximum weight!"
Me.txtWeight2.SetFocus
Else
If IsNull(Me.txtWeight1) And IsNull(Me.txtWeight2) Then MsgBox "You must enter a min and max weight!"
End If
This will not compile for me! I've tried with and End If and without an End If and other stuff. Why won't it work?
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Nov 10, 2014
Is there a code that will replace the empty fields by shifting the bottom fields up for access? I am planning to write a code that will delete unnecessary items in my database, however, that will cause the database to have "holes" in it.
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Jan 9, 2006
Hello.
I have a simple crosstab query, which is designed to give a monthly total (numeric) and a yearly total for the value of orders placed by a number of customers.
The query is based on another query which simply extracts order records for a particular year.
For some customers, certain months will be blank as there were no orders placed.
I would like to use the crosstab query on a report, and I would like to replace the blanks with zeros.
I have searched for examples of query expressions using the nz function and attempted to apply some. I have, however, had no success in converting the blank monthly totals to zeros.
Can anyone help me achieve this?
The query is as follows :
TRANSFORM Sum(AmountQueryLastYear.SumOfAmount) AS SumOfSumOfAmount
SELECT AmountQueryLastYear.DeliveryName, Sum(AmountQueryLastYear.SumOfAmount) AS [Total Of SumOfAmount]
FROM AmountQueryLastYear
GROUP BY AmountQueryLastYear.DeliveryName
PIVOT Format([ShipmentDate],"mmm") In ("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
An example of expressions I have tried is :
Expr1: NZ([SumOfAmount],0)
In it's own column in the query design grid.
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Jul 31, 2013
I have always relied on Design View to create my queries, usually with great success, but in so doing, I have not become familiar with SQL view, so can't solve this problem:
I have a very simple query whose only function is to sum the payment amounts received for each contract number:
SELECT Payments.[Contract Number], Sum(Payments.[Payment Amount]) AS [SumOfPayment Amount]
FROM Payments
GROUP BY Payments.[Contract Number];
It is then used in subsequent queries to create an accounts payable report. It works great as long as at least one payment has been received on the contract, but if NO payments have ever been received, the Sum is actually null, so that record doesn't get included. I need a way for this query to return zero or currency zero 0.00 for all contracts with no payments yet, so those contracts will be included and the next query in line will see a zero.
In my search, it seems I need to make use of the IsNull function in my SQL (the check expression would be the sum of payments, the replacement value would be zero) OR I need to include a WHEN or WHERE in my SELECT statement above? I just don't know enough about SQL to make this happen .
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Apr 15, 2005
In a previous post someone mentioned a difference between Null and Empty. Is Null is not pulling the nulls but I know those fields are empty. Can someone tell me how to pull in these empty fields. for my calculation I need to get Companies that showed revenue after and didn't show revenue once their contract started.
Thank you
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Dec 12, 2005
I have the following problem:
I have a make table query that sum a total amount in order to have only the total in the table field.
However, when the total is 0.00, the make table query says "you are about to pos 0 rows" instead of postin 1 row with 0.00.
How can I set the query in order to have a 0 in the table when the total is 0 instead of having nothing posted ?
I have tried the is null, is empty, is missing, nz and nothing seems to work.
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Nov 30, 2007
I have the query below and it returns the number of cases for eache of the case status (open, closed or private) Some of the cases have no status, the field is empty. Is there a way to count the number of cases which have no status in the status field?
Can someone tell me how to do this?
SELECT
Count([Report table part one].CaseStatus) AS CASES,
[Report table part one].CaseStatus AS STATUS
FROM [Report table part one]
GROUP BY [Report table part one].CaseStatus;
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Jun 1, 2014
I have a form, form1. Inside there is a combo box, cbo1, that gets its values from table1.On form load, I want an expression that checks if table1 has any values to "send" to cbo1. If yes, meaning, if after form loads cbo1 is loaded with table1's values, I want cbo1 colored RED, if not, colored WHITE.
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Sep 12, 2014
I have a module that creates records into a contacts table in my access database. When there is no data in the field from outlook, the data is populated as an empty string "" instead of a null value, creating problems with subsequent queries and processes. I'd like to create the data as a null value but the module keeps failing with "object is required" on the statement
rstImport("Customer ID").Value = System.DBNull.Value
It doesn't seem to like System.DBNull.Value or DBNull.Value, and when I assign the vbNullString constant instead, it gets set to "" again and not null.
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May 23, 2013
I'm having trouble with using a where statement linked to fields when the field is empty. I need a way to say if field is null then 'do nothing'/'select all' else use the text from the box.
I have a form (ServicesRCSSearch) which has 3 combo boxes (Location1, Location2 and Location3). These fields are linked to a query. The button on the form generates the query.
My SQL for the query is currently:
Select Services.Key, Services.Location, Services_1.Location, Services_2.Location
From Services, Services_1, Services_2 (copies of the same table all left joined)
Where
((IIf(forms!ServicesRCSSearch!Location1 Is Null,"",services.Location=forms!ServicesRCSSearch! Location1))<>False)
And ((Services_1.Location)=IIf(forms!ServicesRCSSearch !Location2 Is Null,forms!ServicesRCSSearch!Location1,forms!Servi cesRCSSearch!Location2))
And ((Services_2.Location)=IIf(forms!ServicesRCSSearch !Location3 Is Null,forms!ServicesRCSSearch!Location1,forms!Servi cesRCSSearch!Location3))
This works in that it uses the fields to filter the query but when Location1 is empty there are no results as you can see from the code.
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Jun 6, 2007
Hello
I have two tables with names of people in different forms.
table1 : [name] can be either in the form of :
- firstname & firstname surname
- surname, firstname
table2: [surname]
I'm trying to select all the records in table1 where [table2]![surname] is part of [table1]![name]
I've tried using
Like "*"&[surname]&"*"
This returns everything rather than the similar names.
I think this should be simple but can't work it out.
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Aug 2, 2007
Hi everyone,
I have a a table called [Email Database] with many fields
I need to create a query that replaces all Null values with blanks or ""
I'm not that familiar with SQL so any help would be appreciated!
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Apr 24, 2013
I am trying to using an iif statement to pick up null values, but I don't know what to type in the function. I tried using "is null", but got an invalid message.
What value I should type in to get null value in the function below?
IIf([popi_r2a] is null","",[popi_r2a])
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Jun 8, 2014
After hours of playing around i finally have my IIF statement working the proplem is now is that when the Value is null it gives a blank value on my Report. How do i get it to show the value of 0 when it is Null. can i use an isNull withen my IIf statement maybe nested what is best practice?
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Oct 8, 2013
I have this IIF statement however all empty cells are also coming up as Expired. How do I exclude empty cells?
Status: IIf([Expiration Date]>= Date() ,"CURRENT"," EXPIRED")
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Aug 30, 2013
I have a form with two list boxes on it: listAllBANANA and listActiveBANANA
The listboxes are populated from tblBANANA. Active is defined by the tblBANANA field "ResponseDate" being Null.
Also on the form is a CloseBANANA command button. When pressed with no selection, it opens frmCloseBANANA to the first record. If a BANANA is selected in listActiveBANANA, the form opens to the selected record.
Now comes the tricky part: if a BANANA is selected in listAllBANANA, I first need to verify they have an Active BANANA selected, before opening the form. I've poked and tested and searched and cut and pasted my little fingers off with no joy. What I've deduced is that I'm either messing up the syntax of the DLookup or I'm incorrectly referencing the selected record. There's also the third option that I'm going about this in entirely the wrong way.
All other code below works. If I delete or comment out the line in red, I have no issues other than I may open up a blank form because I'm trying to close a BANANA that is already closed.
Code:
'If a BANANA is selected in Active BANANA or All BANANA, open Close BANANA to that record. If not, open form to most recent record
Private Sub cmdCloseBANANA_Click()
If Not IsNull(Forms!frmGUI!listActiveBANANA) Then
[Code] .....
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Dec 29, 2014
I have a report based on a query with 3 fields (Tested, RMA, OpenRMA). The query searches all the tables in my database and gives me a count of the equipment tested, RMA reported and open rma.
The report has two fields (Equipment, NumberTested) with a total below and also a total of the RMAs and OpenRMAs. I'm trying to hide RMAs and OpenRMAs from appearing in the body and only showing below the total. All three totals are showing correctly, but I am still seeing RMA and Open RMA with a null in the count in the body.
So in the report's Equipment.control I wanted to put
Iif([NumberTested] is null, null, [Equipment])
Meaning if the numbertested field is null the equipment field will be blank, if it is not just leave what is in the equipment field there, but it returns a #Error in the printout. It seems to handle the two null records correctly. Trying Equipment.Value also returned the same error.
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Sep 11, 2013
I would like the user to be able to select the months he wishes in case they want to look at calender year, financial year or just a custom group of months. If I use the wizard and pick dates say the start and end of the year I get the following code in the row source of the chart control:
Code:
SELECT (Format([DatePaid],"MMM 'YY")),Sum([TotalPaid]) AS [SumOfTotalPaid] FROM [Q_AllCust_Gross] WHERE ([DatePaid] BETWEEN #01/01/12# AND #31/12/13#) GROUP BY (Year([DatePaid])*12 + Month([DatePaid])-1),(Format([DatePaid],"MMM 'YY"));
So I decided all I needed to do was replace the dates in the above code with my own global varible which i would pass custom dates into via a form. Which I called getds() and getde()
Code:
SELECT (Format([DatePaid],"MMM 'YY")),Sum([TotalPaid]) AS [SumOfTotalPaid] FROM [Q_AllCust_Gross] WHERE ([DatePaid] BETWEEN >=#getds()# And <=#getde()# ) GROUP BY (Year([DatePaid])*12 + Month([DatePaid])-1),(Format([DatePaid],"MMM 'YY"));
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Jul 5, 2013
My issue is that I am trying to update a date field. When I do the date field may have a date or may be a null. When I try to pass in a NULL date with no quotes, I get a syntax error. When I have single quotes in the statement and a null value is passed in, I get an invalid use of date.
Dim DENIEDDATE1 As Date
If (Not IsDate(rs.Fields("DENIED_DATE"))) Then
DENIEDDATE1 = Null
Else
DENIEDDATE1 = "'" & rs.Fields("DENIED_DATE") & "'"
End If
update table1 set table1.denieddate = " & denieddate1 & " 'get Update syntax error with this statement
update table1 set table1.denieddate = '" & denieddate1 & "' 'fails due to invalid use of null
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May 9, 2014
I have a form in my Access database that has 3 input boxes by which a user can locate a record by. The problem I am running into is that I can not get a nested IF statement to work properly to first check which of the search boxes are filled in and second search by whichever is filled in. I have come up with the following code that seems to be only searching by the first input box. If the first input box is blank it does not move to the second or third numbers so I imagine there may be something wrong with the order of my IF statement or the syntax is off.
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May 6, 2014
I have this working query:
Code:
INSERT INTO TB_SISTEMAS ( LOGIN, SISTEMA, PERFIL, DATA )
SELECT Left([dbo_BACKUP_ACESSOS.LOGIN],255) AS LOGIN, dbo_BACKUP_ACESSOS.SISTEMA, Left([dbo_BACKUP_ACESSOS.PERFIL],255) AS PERFIL, dbo_BACKUP_ACESSOS.DATA
FROM dbo_BACKUP_ACESSOS
WHERE (((dbo_BACKUP_ACESSOS.SISTEMA)<>"ACTIVE DIRECTORY") AND ((dbo_BACKUP_ACESSOS.DATA)="2014-03-23"));
But Iwant to be able to use a set of data to be used in the Replace Statement, so I create a table to add each string I would like to have replaced by "nothing", and trying to make the replace query to look there in order to find what to replace.I also created a table where I will list the systems that I dont want in the select, so I removed the "ACTIVE DIRECTORY" and replaced by the colum that have the list of system I dont want listed.This is the result:
Code:
INSERT INTO TB_SISTEMAS ( LOGIN, SISTEMA, PERFIL, DATA )
SELECT Replace((Left([dbo_BACKUP_ACESSOS.LOGIN],255)),[PREFIXOS_E_SUFIXOS]![Valor],"") AS LOGIN, dbo_BACKUP_ACESSOS.SISTEMA, Left([dbo_BACKUP_ACESSOS.PERFIL],255) AS PERFIL, dbo_BACKUP_ACESSOS.DATA
FROM dbo_BACKUP_ACESSOS
WHERE (((dbo_BACKUP_ACESSOS.SISTEMA)<>[SISTEMAS_EXCLUIDOS]![Sistema]) AND ((dbo_BACKUP_ACESSOS.DATA)="2014-03-23"));
The thin is that this keeps asking me to enter the parameter value for "PREFIXOS_E_SUFIXOS!Valor" and for "SISTEMAS_EXCLUIDOS!Sistema"
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Aug 3, 2006
I'm trying to assign a numeric value to different existing text values in a field in Access. Does anyone know the syntax of this?? :) thanks
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Feb 4, 2007
Is there a way for me to do a find/replace on a '#'? I am trying to remove all '#' in a text field. When I do a find/replace (replace '#' with ''), it removes all my numbers from the text field.
Any suggestions?
Thanks,
Warren
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Nov 21, 2013
how I can replace the MS Access icon in the windows 7 taskbar at the bottom of my screen with my customized one. I already added under the access options the form and report icon and was hoping that this may solve the issue. But my own icon just pops up on the title bar of the main access screen, forms and the reports.
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