Access 2013 - Reference an Unbound text box on a Form
I am currently trying to use an unbound text box [Text161] on a Form name [DCM_Gap_Servers] to sort information through a table. I want the query that I created to be able to take the users input from [DCM_Gap_Servers]![Text161] as the field that is being sorted from the table names 'Server'.
This is the SQL I am using right now in the query:
SELECT * FROM Servers WHERE "Forms![DCM_Gap_Servers]![Text161]" IS NULL
** I have already Tried:
"Forms![DCM_Gap_Servers]![Text161]" ; (Forms![DCM_Gap_Servers]![Text161]); Forms.[DCM_Gap_Servers]![Text161]
This will work at any time if I replace the Text Box reference with the actual Field name I am using, but since there are hundreds of combinations of fields, I need the reference to work.
I have looked all over, and I can't seem to find the correct answer. I am willing to do it in VBA if needed, whatever it takes to get the filtering done correctly.
Thank You.
It is:
SELECT * FROM Servers WHERE Forms.[DCM_Gap_Servers].[Text161] IS NULL
but that will just select all records whenever your textbox is Null.
So it rather is:
SELECT * FROM Servers WHERE SomeField = Forms.[DCM_Gap_Servers].[Text161]
To use the form value as a field name, you must use concatenated SQL:
strSQL = "SELECT * FROM Servers WHERE " & Forms![DCM_Gap_Servers]![Text161].Value & " IS NULL"
This you might pass to the SQL property of an existing query object:
MyQueryDef.SQL = strSQL
Or:
Constant SQL As String = "SELECT * FROM Servers WHERE {0} IS NULL"
FieldName = Forms![DCM_Gap_Servers]![Text161].Value
MyQueryDef.SQL = Replace(strSQL, "{0}", FieldName)
Of course, take care the the field name isn't a zero length string.
Related
After populating the recordsource the next action is clicking on one of the fields populated to "activate" the record. When clicking this, the goal is that the SEC_ID (A GUID, Number Data Type) is stored as a tempvar and used in future queries. This GUID is also placed in a text box just for a visual debug. However it doesn't put the GUID, it puts random Chinese characters. I've tried to place it into a MsgBox just to also see and it spits out "???????".
My code to populate the rowsource:
Dim componentListSQL As String
If FCSUtilities.AssessmentUoM = "Metric" Then
componentListSQL = "SELECT DISTINCT [100b_Working].SEC_SYS_COMP_ID, [100b_Working].SEC_ID, [110b_RO_Material_Category].MAT_CAT_DESC, [110b_RO_Component_Type].COMP_TYPE_DESC, [110b_RO_Material_Category].MAT_CAT_ID, [110b_RO_Component_Type].COMP_TYPE_ID, [100b_Working].ID_Number, [100b_Working].Model, [100b_Working].Serial_Number, [100b_Working].Capacity, [100b_Working].Manufacturer, [100b_Working].SEC_YEAR_BUILT, ROUND([100b_Working].SEC_QTY, 0) AS SEC_QTY, [100b_Working].UOM_MET_UNIT_ABBR, [100b_Working].UOM_ENG_UNIT_ABBR, [100b_Working].Equipment_Make, [100b_Working].UOM_CONV " _
& "FROM (110b_RO_Units_Conversion INNER JOIN (110b_RO_Component_Type INNER JOIN (110b_RO_Material_Category INNER JOIN 110b_RO_CMC ON [110b_RO_Material_Category].MAT_CAT_ID = [110b_RO_CMC].CMC_MCAT_LINK) ON [110b_RO_Component_Type].COMP_TYPE_ID = [110b_RO_CMC].CMC_CTYPE_LINK) ON [110b_RO_Units_Conversion].UOM_ID = [110b_RO_CMC].CMC_UoM) INNER JOIN 100b_Working ON [110b_RO_CMC].CMC_ID = [100b_Working].SEC_CMC_LINK " _
& "WHERE ((([100b_Working].SEC_SYS_COMP_ID) = [Forms]![200a_MainWindow]![txtDebugCompSysID]) And (([100b_Working].SEC_ID) Is Not Null)) " _
& "ORDER BY [110b_RO_Component_Type].COMP_TYPE_DESC;"
Me![210_ComponentList].Form.RecordSource = componentListSQL
End If
The OnClick event:
Private Sub txtMaterialCategory_Click()
Me.txtActiveSecID.Value = Me.txtSecID.Value
End Sub
The txtSecID appears as a GUID as it should but it's in the txtActiveSecID that it becomes Chinese characters even if I attempt to put it as a tempvar then set it into the txtActiveSecID.
I'm not exactly sure what is going on. Looking at different stacks, it points that it's due to long/memo field but as I said previously, the SEC_ID field data type is Number.
Per MS documentation https://learn.microsoft.com/en-us/office/vba/api/Access.Application.StringFromGUID:
The Microsoft Access database engine stores GUIDs as arrays of type Byte. However, Access can't return Byte data from a control on a form or report. To return the value of a GUID from a control, you must convert it to a string. To convert a GUID to a string, use the StringFromGUID function. To convert a string back to a GUID, use the GUIDFromString function.
StringFromGUID(Me.txtSecID.Value)
However that results in output like:
{guid {2786C27B-CB7C-4DEA-8340-1338532742DE}}
That should still work as filter critera but could do further processing to extract GUID from that string. Use string manipulation functions to remove the {guid header and trailing }. Review Access - GUID value stored in textbox, can't be used in SELECT statements
I'm new to MS Access.
So, I wrote a SQL query(query name = qryEmployeeInfo) which shows employee information. The query outputs two columns. The employee ID(header name = employee_ID) and the corresponding employee address(header name = employee_address).
My Access form has a text box(text box name = txtEmployeeID) that I want the user to be able to enter the employee_ID into and have it output the corresponding employee_address into another text box (text box name = txtEmployeeAddress). I also want the employee_address to be in the format of a string variable so I can perform other VBA checks on it later(for example - if LIKE "California" THEN...something).
I want to write what (I think) is called an injection SQL query so that I can pull the address data from the query for that specific employee_ID. I believe the format should look like this:
Dim rs As Recordset
Set rs = CurrentDb.OpenRecordset("select employee_address from qryEmployeeInfo where employee_ID = "' & txtEmployeeID & "'", dbOpenDynaset)
Do I have this written correctly?
If so, then how do I get that output into a string variable format(variable name = strEmployeeAddress)?
After I get the employee address into a string variable format I want to simply use txtEmployeeAddress.value = strEmployeeAddress to populate the employee address text box. Again, I also want the employee_address to be in the format of a string variable so I can perform other VBA checks on it later(for example - if LIKE "California" THEN...something).
Any help you could provide would be greatly appreciated.
If employee_ID is a number field, remove apostrophe delimiters.
If employee_ID is a text field, move first apostrophe so it is within quote marks.
"select employee_address from qryEmployeeInfo where employee_ID = '" & txtEmployeeID & "'"
Then txtEmployeeAddress = rs!employee_address
However, instead of opening a recordset object, could just use DLookup.
txtEmployeeAddress = DLookup("employee_address", "qryEmployeeInfo", "employee_ID =" & txtEmployeeID)
Or even better, eliminate the VBA. The DLookup() expression can be in textbox ControlSource property, just precede with = sign.
However, domain aggregate functions can perform slowly. So instead of textbox, use a combobox for selecting employee. Include employee information in combobox RowSource. Expression in textbox references column of combobox: =combobox.Column(1). Issue is combobox has limit on how many characters can be pulled into column so if field is memo (long text) type, this approach is not feasible and should use DLookup.
The address will be available in textbox for use as long as this form is open. If you want the address to be available to other procedures even after form is closed, then need to set a global or public variable. Such variable must be declared in a module header to make it available to multiple procedures. TempVars are another way to hold values for future use. I have never used them.
using ms-access 2013, I've written a query that has a lot of variables in it. Is there a way to see the query as it was run, with the variable names replaced by the value of the variable?
Instead of "Select * where name = strName..." I'm looking for it as it was run, "Select * where name = "jones" for example. Is there a way to display it on a form (where the query is in a subform)?
Thanks.
Two approaches:
1. Do this in VBA. When you construct the SQL query (adding filters in VBA), you use the resulting SQL twice: once to execute as a SQL query, once to place as text in a textbox control.
2. If your filters on the query are on forms, you can update a textbox control that constructs your SQL. So if your input is a control named txt_LastName, in the txt_SQL textbox where you want to show the complete SQL, the Control Source would be:
="Select * where name = " & Chr(34) & [txt_LastName] & Chr(34)
When txt_LastName is set to Jones then txt_SQL would be set to:
Select * where name = "Jones"
I have the following setup:
Table "Mitarbeiter" (Users) with fields: "UNummer" / "Sortierung" /....
Table "Mo01" (a sheet for every month) with fields: "UNummer" / "01" / "02" / ....
The Field UNummer in Table Mo01 is a combination field that gets Mitarbeiter.UNummer and saves it as text
I call a Form "Monatsblatt" that is based on the table Mo01.
In that Form I have a Field "fldSort" that is calling "Sortierung" from table "Mitarbeiter". The Data in that field is based on "=DomWert("Sortierung";"Mitarbeiter";"UNummer = '" & [ID] & "'")"
This works and looks like this:
I am trying to sort the form by that "fldSort" in Form "Monatsblatt" by using this code:
Form_Monatsblatt.OrderBy = "fldSort"
Form_Monatsblatt.OrderByOn = True
When I start the form with that code running, Access asks for parameters:
I tried a lot of different ways of writing the code, referencing to the field in different ways. I do NOT want to base the form on anything other then the table.
Why not ask the wide world watch "Why Access asking me for Parameter"? That would have brought you to the clue I think. Debug.Print or MsgBox your .OrderBy and you see it's "fldSort", not a valid sort. Access is assuming you want to use a parameter called fldSort, but you want the string in the variable fldSort, but it's not recognized, because of the double quotes surrounding it. Everything between 2 double quotes is interpreted as a string, even it's a var name.
Delete the quotes and everything will work fine (if your sort string is sufficent)!
Form_Monatsblatt.OrderBy = fldSort
[Update]
Late, but now I see the clue. You added a calculated field to the form, but you can't sort or filter them.
Instead of appending this field to the table, create a query and add it there, then you bind the form to the query and add the field to the form. Now you can filter and sort as you like!
The query looks like this:
SELECT *,
Dlookup("Sortierung","Mitarbeiter","UNummer = '" & [ID] & "'") AS ldSort
FROM Mo01;
Or with a join:
SELECT
Mo01.*,
Mitarbeiter.Sortierung AS fldSort
FROM
Mo01
LEFT JOIN
Mitarbeiter
ON
Mo01.ID = Mitarbeiter.UNummer;
Now you can use
Form_Monatsblatt.OrderBy = "fldSort"
Form_Monatsblatt.OrderByOn = True
because you have a bound control called fldSort.
[/Update]
I am very new to Microsoft Access.
I would like to select a column from a table based on the value of a parameter (i.e. my table has columns x, y and z and I have a chosencol parameter which is set by the user using a dropdown.
I can select one / all of the columns using a select command, however, I would like to do this using my parameter chosencol instead.
Having read around, I have found a number of references to using the SET and EXEC commands, however, entering them into the SQL command in Access just yields errors.
Please could someone advise me as to how I go about implementing a dynamic-sql query in Access (in fine detail as I think I am writing the commands in the wrong place at the moment...)
First I created an example table in Access.
Next, I created an example form to query your value. The dropdown is called 'chosencol'. Select a value from the Column Select dropdown and press the "Lookup Value" button.
Here is the code under the "Lookup Value" button's On Click event. A SQL statement is dynamically built with the column you chose. The column is renamed to [FieldName] to that it can by referenced.
Private Sub btnLookup_Click()
Dim rsLookup As New ADODB.Recordset
Dim strSQL As String
strSQL = "select " & chosencol.Value & " as [FieldName] from Table1 where ID=1"
rsLookup.Open strSQL, CurrentProject.Connection, adOpenForwardOnly, adLockReadOnly
If rsLookup.EOF = False Then
txtValue.SetFocus
txtValue.Text = rsLookup![FieldName]
End If
rsLookup.Close
End Sub
When the button is pushed, the value from whatever column you selected will be returned. For this simple example, I'm always returning row 1's data.
I'm pretty sure you can't do that in straight SQL. However, you can create the SQL string in VBA code and save it as a query.
CurrentDB.CreateQueryDef("MyQueryName", "SELECT " & chosencol & " FROM MyTable")
Now, MyQueryName will be a permanent query in your database and can be referenced wherever you want.
If chosencol is a multi-select dropdown, you'll have to read the selected values into an array and then write the array to one concatenated string and use that instead.