I have a form with couple of textboxes bound to a table. When the user opens the form to enter records, i want to write a function that would go through the textboxes to check whether the textboxes are left NULL. Now i can write code on button click for each form, but i was wondering if its possible to write a function that could be called for each form that i have to check for null values.
View RepliesI do not understand what is happening here. I have foll0wing line in a calculated query field:
m: Switch([EmpID]<5,1) ' run Query 18 in attached example, A2007/2010
this produces 1 for all EmpID<5 and Null for all other EmpID's. All as expected.
But if I do this:
m: Switch([EmpID]<5,1,[EmpID]>=5,Null) ' run Query 19 in attached example
then the entire column is set to Null
I have created by external data from excel, while one of the column values are showing blank.
How can i find the column having null or values in table.
Error : Type Conversion Failure (ImportError table)
Query :
Code:
SELECT * From empdetail
WHERE EmpId =IsNull ("")
From the above query, not getting the result
I am struggling trying to execute a function inside a Form_current event to display some stats.
The Function is this:
Code:
Function FlightsByAircraft(Aircraft As Long) As Long
Dim rst As DAO.Recordset
Dim dbs As DAO.Database
Dim str As String
str = "SELECT * FROM tblFlights WHERE AircraftID = " & Aircraft
[Code] ....
The code for the Form_Current event is this:
Private Sub Form_Current()
txtStats1 = FlightsByAircraft(Me.AircraftID)
Very simple. Well, the problem is when I move to a new record, a error message comes up: "Run-time error '94' - Invalid use of Null". It is because the AircraftID is not populated at that time. I tried to insert in the function code something like that:
Code:
If IsNull(Aircraft) then
exit function
else
.... (the DAO.Recordset code)
but it doesn't work.
It might be an easy one but I just wasted the past hour deciphering through my code in order to solve the run-time error '94' that I'm getting when trying to execute the following code:
Code:
Private Sub cmdUpdateDates_Click()
'###################################
'This sub aims at combining the timesheet date and the start and end time into the fields [Start Time] and [End Time].
'###################################
Dim intCounter As Integer
intCounter = 0
Dim rs As ADODB.Recordset
[Code] ....
I have a calculated field (Bhours) with the following IIf function:
=IIf(Fields!BDate.Value<=Parameters!Pdate.Value and Fields!EDate.Value>Parameters!Pdate.Value,Fields!H ours.Value,0)
It works perfectly, but I don't like the fact that it has a zero for the false part as I like the field to the blanc instead of filled with a zero.I can't use a space as I need to calculate with this field later on. I tried using "", but then the field displays #error".
I have a field (SNumber) which is a text field and contains records that have a number which sometimes also have 2 letters on the right. ( examples: 1, 2, 3CD, 5, 6 HD). I am using the Right function in a code I am writing.
If Right (SNumber, 2) = "CD" then
.....rest of code here
I would like instead of stating actual letters to code "any 2 digits". Can this be done and what is the correct code for any digits in this instance?
Is there a function I could use to find the date listed in the "date created" property of an Access file?
View 4 Replies View RelatedCode:
Private Sub Form_Open(Cancel As Integer)
cboDateStart.Value = Format(Now() - 7, "short date")
...
End Sub
When I run procedure the Format is highlighted and popup error message:
Compile error: Can't find project or library
I'm looking for some type of custom function that will search a specified column for any keywords listed inside another table.
I can run a query on each keyword individually, however there are 50 and it takes a long time each time I do it. I was hoping to write in a function for that column and it would just select all records that match.
These would all need to be a "like" with an " * " on each end of the word.
With SQL it would look something like:
Code:
select a.address1
from main_tbl as a
where a.address1 like '* north *'
or a.address1 like '* park *'
or a.address1 like '* south *';
I just want it to read each of the table values instead of hard coding them and the column name would be the function name so it can be used in any column I specify. I'm just not sure how to incorporate this into a custom function.
The following code doesn't check null condition in Scannedby field. The scannedby has text data type. The code gives me all the data where scandate=20130722 but doesn't check that scanned by can't be blank.
Code:
rs.Open "select count(*) from BatchTBL2 where scandate=20130722 and scannedby <> null", cn, adOpenKeyset, adLockOptimistic
j = rs.fields(0).Value
I am trying to add a find button to the form. But I keep getting an error saying "Error accessing file. Network connection may have been lost" I have a feeling it has something to do with the Event Procedure. Any thoughts?
View 2 Replies View RelatedI have to deal with string arrays that store text. I need info on copying, comparing, appending arrays. Also on passing arrays as parameters to subs or functions. Where I can get to this info quickly without having to browse through many screens.
In addition to this I have some questions:
I have to find the duplicates of values in an array. Here is the code that I use.
Code:
Sub FindDuplicates()
Dim I As Integer, J As Integer, IEND As Integer, text() As String
ReDim text(IEND)
For I = 1 To IEND - 1
For J = I + 1 To IEND
If text(I) = text(J) Then text(J) = ""
Next J
Next I
End Sub
It works but is not performing well. Are there more efficient ways of doing this?
I have this Sheet1 which is a manual input, I need to copy the values from Sheet 1 to Sheet 3, then I have Sheet 2 where there is data auto generated, How can I vlookup values copied from Sheet 1 and find it in Sheet2 ??? Is it possible using the vba code?
I should find the values copied from Sheet 1 in Sheet 2 and copy the values seen to sheet 3?
Someone fills in a new patient into the database, and the 'chipsoftnummer' which is the number in another database. That number is unique, so i want to have it where if someone fills in a number that already exists in the database the afterupdate event will open that record in the form.Here's the code i put in the input textbox update field:
private Sub chipsoftnummer_AfterUpdate()
Dim NewCHIP As Integer
Dim stLinkCriteria As Integer
Dim custNo As Integer
[code]...
It doesn't work, simple things like hello world do work so VBA is enabled.
I've attached the corresponding part of the database (took out all non-relevant fields and tabs) .
I have a Form with multiple comboboxes and listboxes whose selections are assembled into a query. The combo-box selection goes into an IF-ELSE statement for a selection check (IsNull) and if there is no selection made, it is supposed give me all values (Blanks & Non Blanks)
Here is a sample of my code:
Code:
If IsNull(Me.cbReg.Value) Then
RegStrng = " Like '*'"
Else
RegStrng = Me.cbReg.Value
RegStrng = "= " & RegStrng
End If
I have several If-Else statements here and a final query assembly at the bottom of the code page which is as follows
Code:
MasterSql = "SELECT DISTINCT blah-blah-blah" & _
" INTO some more blah-blah" & _
" FROM even more blah-blah-blah" & _
" WHERE dbo_mytable.[Reg#]" & RegStrng & _
" AND the results from other If-Else statements similar to above"
Here is where the problem comes in:
I see the mistake in my If-Else statement
Code:
If IsNull(Me.cbReg.Value) Then
RegStrng = " Like '*'"
Like * means it will show me all rows where there are NON-Blanks. However, it skips all Blank Data.
What should the If IsNull() statement look like if I want to show all the values?
If there was only one combo-box and there was no selection made, then the resultant query should show me all results rather than only the results where there is some sort of data within the column filtered by the combobox.
I've created an array that I created and declared as a Public array in my module. I created a function that populates the array so that I can use the values in another function. I've gotten the array to populate but when I go to use the values in the array in another function, the array appears at Empty. I seem to be stuck on declaring it properly or something so that it can be used by other functions.
Public arrWebIDs As String
Public Function FillArray()
I made a custom function to look certain value from table based on couple of criteria that it gets from query where I want to use it. Function's code is below:
Code:
Public Function PotteryWeights(strLocusID As Long, nrPotSubID As Long) As Variant
Dim priSubID As Long
Dim priLocusID As Long
Dim priResult As Variant
priSubID = nrPotSubID
[Code] ...
However, when I use it in query it only returns Case else - option and everything else is empty.
Trying to run a query where each 4 fields calling a custom function will not just re-run the same custom function over and over again for each field in a single record.
A Function has a huge amount of multiple queries and logic to perform.The Function returns a Integer, Integer, Integer, and optional Integer. Each integer requires a DLookup to lookup a String description value for each individual integer (in each of 4 fields).
The problem is, the DLookup in each column that runs against each of the integers re-run the same function.The result is that a single record, each of the 4 columns returning a single of the 4 values, the complex function is re-run 4 times.
The function is huge, part of a Business Rules Engine. Depending on the Rule-Meta data - it might launch up to a dozen queries and perform logic steps for each record. This is not the ordinary SQL Query.
Imagine if one record (for 1 field) takes 0.1 second to run. By referencing the function in 4 columns, this same function is re-run 4 times (0.4 Seconds) Against 50,000 records - this duplication of re-running the function for each column can really add up.
Possible Solutions: Researched Class Modules - There is a comment that the property Get, Let actually reduce performance. There are huge advantage of code documentation, documentation and centralization.It doesn't claim class modules reduce execution as each propery is returned. It also describes that Class Modules can't be called directly in a Query - unless each property is wrapped in a function.
Function Returns one String with delimiters: e.g 34;54;55;1 This single column goes into a Make Table (runs function one time per record) Then the D-Lookup is run against static local data. This pevented the function from being run over and over across the network linked data.
Final Solution: Eventually, the many hundred lines of VBA code for the Rules Engine will be converted into SQL Server T-SQL Functions on the server.For a Rule Engine development, Access has been great for a rapid protoype development and testing. The TSQL will be a final big step requiring re-coding. It is not currenty my option for the delivery time frame.
Hi,
I would like to convert zero if enter into null value during the data entry phase in a form. This means that zero values will be stored as null values. Is there a way? I am not able to do it in the input mask somehow.
Thanks for any help in advance.
I have a form with 4 different search fields used to query a table and limit results: Policy#, SSN, Credit_Amt, Debit_Amt. Any matching rows based on the search criteria are returned in a subform.
My problem is how to handle any fields where the user doesn't specify a search value.
In my query, I have the Criteria set to:
Field: Policy_No
Criteria: =[Forms]![form name]![Policy#]
Field: SSN
Criteria: =[Forms]![form name]![SSN]
and so on....
If I place my criteria on different OR lines, the query runs, but if a user specifies more than 1 criteria, I get all the data for one criteria(such as policy# matches) and all the data for the second criteria(such as all the records for a certain credit_amt, regardless of Policy #).
If I place my criteria on the same criteria line, effectively making it AND, I get no results because I assume the database is looking for any blank search field values.
So, how do I make the query an "AND" query, but actually get results by ignoring any NULL search fields? So if a user enters a Policy# and Credit_Amt, the results will be only matching rows by Policy# AND Credit_Amt, and doesn't look at SSN and Debit_Amt.
I've tried different iterations using IIF(Not IsNull(.... to no avail.
Thanks!
I'm trying to build an expression where the form can only be saved if the field supervisor approval is not null.
View 1 Replies View RelatedIs it possible on the Find Record button added to a form to adjust the search function so it defaults to a specific box on the form? I have a form for tracking employee's and on my Find Record button I would like it to default to the Last name instead of the Record number.
View 3 Replies View Relatedi am trying to create an append query that gets 2 values from one table and a 3rd value from a form.
It gets the values from the table fine but always gives me a popup asking for the value from the form.
I have used the criteria build... and selected the loaded form and the field value that I am looking for. I have also made sure that there is a value in the field on the form.
is there a reason why the query will not grab the number in the forms field? or am I jsut not doing this right.
I have done this many times on a combo box and it works fine. It is jsut not working for a field that is typed in
Can anyone help me?
i'm creating a search form giving the end user a range of controls to use when filtering/searching data. See the image.But, i think my range search (using the textbox) to put in a lower and upper limit...is preventing this from working. In fact, when i put data into all the controls, no data pops up in my subform.
My query data source can also be seen...showing you how i've handled teh null entries. (i need to put in a null 'handler' for the two textboxes?)
I think the title pretty much sums it up....
I have a query where data is first sorted by user input; first field's criteria: [fieldname], then by another field's criteria: Is Null.
I know there are records containing null values in the second field, as I have run a select query with the criteria: Like "*", to make sure they are null, and not zero-length-strings.
The query is refusing to return any results...
Any ideas?