Null Values In Stored Procedures
Aug 4, 2005
Hi,
I am calculating two fields (qtyorder-qtydesp) in a stored procedure.
The second field is from another query (view) which may not have a record relating to the main record (stored procedure).
The problem is the second field is simply left blank but I need it to be 0.
It makes the calculation in turn result in a blank field, i.e. 1-0 should equal 1 but because of the blank field it returns a null value.
I found that the good old Nz function wont work with stored procedures, is there any alternative?
Thanks,
James
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Sep 11, 2006
Hi,
I am switching from sql server to msaccess and cannot find an equivalent of a stored procedure in access.
The task I want to do is the following.
1. I have a table with many field.s
2. I want to loop through all the fields and replace records which have a value of 0 with NULL.
How could I do this without writing seperate update statements for each of the fields.
Thanks.
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May 20, 2005
How do you make stored procedures in microsoft access 2003, can you actually do this or is it not part of access?
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Nov 15, 2007
I have an Access mdb that has a bunch of tables linked from a SQL Server. On the SQL Server I have some stored procedures that do inserts into various tables. In the Access db I have some local (lookup) tables, queries, and other things that for various reasons can't/don't need to be stored in the SQL server. I'm using Windows authentication to connect to the SQL server because the security is managed through our domain.
I want to write a form that has unbound text fields that, when I submit the form passes all of those values as parameters to a stored procedure in the SQL server. I have written just such a form in an .adp file, which handles the integrated security nicely.
However, I'd rather do this in a regular .mdb file. I've read up on how I can use an ADO connection to do this, then create a SQL string to EXECUTE the stored proc, grab all the values off the form, and build the SQL.
But the problem with this solution is the authentication - I can't use the SA user and password in this connection string, I'd have to utilize the logged-in user's information.
Is there an easier way to execute the stored procedure from an .mdb? Using the integrated authentication?
Failing that, is there a way that I can create "local" (to the .adp) tables, queries, and so on in an .adp?
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Aug 25, 2006
I come from a SQL Server background and am very familiar with store dprocedures and input parameteres.
Is there a way to use a similar method in Access. or example, passing parameters from a button on a form to a query, which can change depending on the input parameter? If so, how ?
Also, how much scope do you have in this for running SQL IF statements and such in the query? It seems that many Access queris can only have one statement at a time.
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Feb 27, 2008
Sometimes when I send a copy of an Access 2003 application to a remote user, a stored procedure or function will disappear. What causes this, and how can I get the entire application over to the users?
Thanks in advance!
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Jan 12, 2006
hey everyone!
Is there an option to use Triggers and stored procedures in access 2003?
thanks!!!
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Mar 16, 2007
Just been upsizing an Access DB. It seems to create views and functions for normal select statements and stored procedures are only created for insert or update statements.
As fas as a recent DBA told me, he said that views should be used sparingly as they are not very efficient. Is this the case?
I also don't see why you would create a function when you could use a stored procedure to so the same SELECT statement(s)?
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Jul 5, 2013
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] ....
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Feb 12, 2008
Hi,
I have combo boxes on a form which are pulling values from a one table and being stored in another table. However they are being stored as '1' or '2' in the other table once selected on the form, as instead of being stored as their literal values ie 'car' or 'van'. Is there any way of making this happen, as it makes reporting a nightmare! Thanks in advance...
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Feb 12, 2008
Hi,
I have combo boxes on a form which are pulling values from a one table and being stored in another table. However they are being stored as '1' or '2' in the other table once selected on the form, as instead of being stored as their literal values ie 'car' or 'van'. Is there any way of making this happen, as it makes reporting a nightmare! Thanks in advance...
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Oct 7, 2013
I have several projects with different tasks for each. I have 3 fields [fkProjectsID], [TaskOrder] and [Duration] in a table for project tracking with that structure:
[fkProjectsID] [TaskOrder] [Duration]
1 /1 /5
1 /2 /8
1 /3 /15
1 /4 /6
2 /1 /8
2 /2 /30
2 /3 /25
I want to calculate cumulative values stored in [Duration] field (represent a number of days). I'm using the field [TaskOrder] to order different tasks within each project. With some testing, I was able to calculate cumulative [Duration] with 1 project using the DSum fucntion as following:
CumulDuration: DSum("[Duration]", "[tblProjectTracking]", "[TaskOrder]<=" & [TaskOrder])
I was having the sequence: 5, 13, 28, 34 for respectively Task 1,2,3,4. However, when I add a second project (and then a third...), I need to be able to filter based on [fkProjectsID] as well (i.e. a specific DSum by ProjectsID). I add this criteria but I get the sum of [Duration] on each row instead of the cumulative:
CumulDuration: DSum("[Duration]","[tblProjectTracking]","[TaskOrder]<=" & [TaskOrder] And "[fkProjectsID]=" & [fkProjectsID])
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Mar 25, 2013
I am having a problem with a filter that i am trying to apply to a subform.
I have a button on the form that when clicked should filter the subform (which is in datasheet view) to the criteria i set.
This criteria will eventually run from a combo box but I wanted to just get the filter working first.
I put the following code into the onclick event of the button:
Items.Form.Filter = "Items.Form.[Master Category] = 2"
Items.Form.FilterOn = True
I chose the criteria 2 for the filter just as a test as I knew there are some records with that value in the master category field.
The problem is when ever i click the button to apply the filter it clears all the data as if it has not found any records with that value.
Is my syntax and method OK? Why its filtering everything out?
The only other thing to consider is that the field I am filtering on was set up using a lookup wizard linked to a table so the values stored are a foreign key (hence the value being 2 rather than something descriptive).
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Sep 25, 2015
I have developed a database but have had difficulty with sorting data within subform of a main form. The subform displays the related tasks that correspond with main form that has been selected. Within the main form I have also created a text field that defines a particular sorting sequence of the tasks found within the subform which is titled Task Sequence. What I would like to do, is use the Task Sequence field to sort the order of tasks within subform. I have tried: IIf([ID] Is Null, 0, Val([Task Sequence])) within the Advanced filter/sort but either it shows only the first task defined in the Task Sequence or it wants to filter the main form and not the subform.
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Nov 16, 2007
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?
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Aug 23, 2005
Easy one for the experts here I hope:
I want query to show all results including any null values because at the moment it just misses the null values out.
So for example instead of the query saying that Fruiterer A has 5 apples, 0 oranges and 4 bananas it just says that Fruiterer A has 5 apples and 4 bananas. Therefore because oranges was a null value then it simply makes no reference to oranges.
Please help, many thanks,
Paul
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Sep 26, 2005
Hello,
I have two tables called table1 and table2 with following fields:
Table1:
Name
NameId
Table2:
Name
NameID
Visits
where name and nameid is same but visit can me 0 to 230. name in table2 is
same as table2 but only showing visit 1 or higher. How can I make new table that can list all name, nameId and visits.
I can create new table but it shows only table2's record. so all I need is
table1 and table2 record if names are missing in table2 then put 0.
Viral
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May 24, 2006
Hi all
I have 3 linked tables in a vehicle database. 1 keeps a record of Service Due date, 1 has the Fleet numbers and the last contains Vehicle Condition reports.
They are linked by the Fleet numbers. I have a query that returns the Services due between 2 dates. What I would like is to have the same query return any outstanding Vehicle Condition items as well for any Vehicles due for servicing. Currently, I can include the field in the query but if there are no current items for a vehicle in the Vehicle Condition table then the query does not return that vehicle as a result. Any suggestions would be appreciated.
Regards
Craig
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Oct 30, 2006
Hope someone can help with this. I'm sure it's dead simple but it's driving me insane!
The scenario is a number of departments who are processing something (sales for example). So, for October
Dept 1 - 20 (Sales)
Dept 2 - 10
Dept 3 - 2
Dept 4 - 7
Now I want to count the number of sales completed from these totals. However, as Dept 3 has no sales completed for October it does not show in the query. So I get
Dept 1 - 7
Dept 2 - 2
Dept 4 - 6
Any idea how to get Dept 3 - 0 to show up in the query?
Any help greatly appreciated!
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Dec 14, 2006
I've found several threads on this subject, but I still can't get it to work, so please forgive me if I seem to be duplicating a question.
I'm making a very simple db. It has only 2 tables:
MATERIAL (one)
TEST RESULTS (many) with left join.
I need to report average test results (by MATERIAL) weekly, even if there were no tests for a particular product that week, ie;
MATERIAL A = 100
MATERIAL B = 90
MATERIAL C =
MATERIAL D = 105
When I try to query, I only get results for A, B and D. It seems to be ignoring the MATERIAL table and looking only at the TEST RESULTS table.
I'm sure it's something simple that I'm overlooking but how do I get C to show, even if it has no results.
Here's my query SQL.:
SELECT DISTINCTROW [MATERIAL Query].MATERIAL, Avg([TEST RESULTS].V50) AS [Avg Of V50]
FROM [MATERIAL Query] LEFT JOIN [TEST RESULTS] ON [MATERIAL Query].MATERIAL = [TEST RESULTS].MATERIAL
WHERE ((([TEST RESULTS].[TEST DATE]) Between [Forms]![Date Range Form]![Start Date] And [Forms]![Date Range Form]![END DATE]))
GROUP BY [MATERIAL Query].MATERIAL;
As always, thanks in advance.
BeckieO
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Sep 28, 2007
Hi all.
I am trying to build a query that combines several fields. The situation is as follows....
1. If a is > b then i need a
2. If b is > a then i need b
3. If a is null then b is not null
4. If b is null then a if a is not null
5. If a and b are null then '999999'
I have everything taken care of up to If 4. The problem i am having is that when create the sql language for 5 it is adding 999999 to the filed when step 3 or 4 are the case. See languange below.
Any help would be greatly appreciated.
IIf(MSC.[TDS<2500_S_GW_NR_100xGWMSC_mg/kg]>MSC.[TDS<2500_S_GW_NR_Model_mg/kg],MSC.[TDS<2500_S_GW_NR_100xGWMSC_mg/kg]) & IIf(MSC.[TDS<2500_S_GW_NR_Model_mg/kg]>MSC.[TDS<2500_S_GW_NR_100xGWMSC_mg/kg],MSC.[TDS<2500_S_GW_NR_Model_mg/kg]) & IIf(MSC.[TDS<2500_S_GW_NR_100xGWMSC_mg/kg] Is Null,MSC.[TDS<2500_S_GW_NR_Model_mg/kg]) & IIf(MSC.[TDS<2500_S_GW_NR_Model_mg/kg] Is Null,MSC.[TDS<2500_S_GW_NR_100xGWMSC_mg/kg]) & IIf(MSC.[TDS<2500_S_GW_NR_100xGWMSC_mg/kg],MSC.[TDS<2500_S_GW_NR_Model_mg/kg] Is Null,'999999') AS MSC_SGW
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Oct 3, 2007
I have a series of values within a table that includes a number of null values. I would like to include this field within a query, however if the value is null I would like to show a 0, if the field is not null, I would like it to show the original value.
I have tried to use the IsNull in an iif formula without luck.
PS: If I was conducting this in Excel I would use the following =IF(J3="",0,J3)
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Jan 14, 2008
I have a query set up to sum 2 fields to a 3rd field, for example, I have
field1, field2, and field3.
Fields 1 and 2 are data from a table.
In Field3 I have an expression:
Field3: [Field1] + [Field2]
This works fine except when either Field1 and/or Field2 contain no data, then the sum does not work. Any ideas how to correct this?
I realize this may not be the best way to accomplish what I am trying to do but this is a small part of a very large application and i would like to change as little as possible since everything else is working ok.
Thanks very much.
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Jan 16, 2005
I'm trying to get my head around null values.
data required is no. Allow zero length strings is yes.
txt2 is a memo field
in a report on page event, I'm trying to get the following code to work.
If IsNull(txtg2) = True Then
Me.lblg2.Visible = False
Else
I've tried this too:
If Me.txtg2 = Null Then
Me.lblg2.Visible = False
Else
It doesn't seem to work. Any ideas?
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Jul 20, 2005
hello friends,
I have written an insert query but sometime it does not work properly and leave some column blank. I want to write a query which should check for the blank columns and delete these records.thanks in advance
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Aug 9, 2005
I currently have a crosstab query that compares data for two years. The results look like this.
month 2004 2005
January 98% 95%
.....
Decemeber 98
What I am getting at is that the query returns null values for the fields that do not have data recorded for the months in 2005 because we have not reached them yet. Is there a way for me to make sure that at least the value 0 is entered in the null value areas?
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