Topics Search

Replacing null values in a table

Replacing null values in a table
Views: 102
I have an access table with ~130 columns, all of which contain some null values. I need to replace all of these null values with zeros. I've seen lots of ways to replace null values within a single column, but repeating this action 130 times is pretty time consuming.

Does anyone know a quick way to replace ALL nulls with zeros throughout the table
Sponsored Links:

Similar posts...


VBA Code - Replacing Null Values with 0

VBA Code - Replacing Null Values with 0 Icon
I'm a struggling to come up with a custom function that replaces Null values in a table with Zero.

My table in its basic form has two fields.
Field A: Client
Field B: Quantity

The data is pulled from elsewhere in the database, but when it extracts it will have the client, and quantities. but some clients will have a Null quantity. e.g. below:

Replacing Null Value with a zero

Replacing Null Value with a zero Icon
First, I am a novice to Access, but quickly learning. I have a query where I want to sum all the values in an Amount field that are between certain dates. So I have an expression, >(Date()+360) And <=(Date()+540), which grabs all the records between the dates I want and sums the values in the Amount field. This works great, as long as it finds records between those dates. If it doesn't, it returns Null.

If it returns Null, I want the Null result to be replaced with a zero. I have tried, and tried to make this work, but keep failing

error 94: invalid use of null

error 94: invalid use of null Icon
I have a large data table of values I am manipulating, and this pops up about halfway through. It is not surprising because there are a few fields that are completely null. But I can't simply skip over them, I need to just set all there values to zero.

Is function I can make that searches for null values and sets them equal to zero before I run my main program?

updating field whose value is the word NULL and Not a typical 'null' value

updating field whose value is the word NULL and Not a typical 'null' value Icon
I was given a table where in a text field, the value is NULL. (Actually spelled out like that.)
I need to convert that field to a date/time one. Which is being hindered by these values of NULL.

The problem is that when I put the word NULL in the field criteria spot, Access believes that I am referring to a value of 'null' and will not do the update.
I have done "NULL", NULL, =NULL, ="NULL", is NULL. and no success.
Please remember that the actual value is not 'null'. It is a text field that has the word NULL in the field.

How do you change null values to zero?

How do you change null values to zero? Icon
I am trying to sum across columns in a table for which many cells have no value in them. When I do this, the sum returns a null value instead of adding zeroes to the other columns with numbers. I cannot figure out how to get the null values to be read as zero, and I don't want to manually enter zeroes bc there are 130000 rows. Can you help me

Blanks upon import

Blanks upon import Icon
I have a table in excel with the following data

ACCNO Address1 Address2 Address3 Address4 Address5 Postcode

I import it into a table called address which is fine. I then go to put it into another table (customer_register) using an append query but it kicks up a fuss saying it can't do it because of a data validation rule.

I’ve worked out this is because not everybody in the table in excel has full data, for example some people only have three address lines and when appending it to the new table it picks these up as blanks ("") rather than null values (is null) and refuses to do it.

is there any way of replacing these blank cells at import level rather than writing queries that will remove each one?I’m now faced with writing six queries to ensure all blanks are removed from address1,2,3,4,5 and post-code but I’d like a better way.

Nulls giving a lot of trouble

Nulls giving a lot of trouble Icon
I have this huge table that I run queries off to get desired results. Now in that table of course there are some values and some nulls. So if I am trying to run a query which sums three of the rows with one null value, the result is a zero.

Now I am looking for a query that can help me update this table to keep all the records as it is and only changing the null values to zero so that adding the other values to zero can give me the desired result

Replacing many values at once in a multiple values checkbox field.

Replacing many values at once in a multiple values checkbox field. Icon
I have a field on a form that allows users to select one or more different values. The values I set myself, and I made an error in naming one of them. I'd like to find all the records where this value was selected in that field and replace them with the correct version.

I tried simply renaming the value but all the records that had already had the incorrectly named version stayed the same.

Is there a way to fix this without going record by record and replacing the erroneously named value with the correct one? That would take forever.

Null values being incorrectly excluded

Null values being incorrectly excluded Icon
My query is excluding null values in error. Can someone assist me in where my code error is? I have one table I'm querying from and using two fields to filter. Here is the statement that is excluding the two discharge disposition types, but is also excluding all null values:

(((tbl_finaloutput.[Discharge Disposition])<>"Admit-Inpatient"
Or (tbl_finaloutput.[Discharge Disposition])<>"PVH Inpt/Outpt")
AND ((tbl_finaloutput.[Patient Type])="er"

I want to make sure I return all Null values in the Discharge Disposition field. For example, there may be another record where the patient type is "er" but the discharge disposition field is blank--this should be in the result because it's an "er" record. I know that I need to define that null values should be recognized as valid, but not sure how

Update where query not working

Update where query not working Icon
This should be simple but I can't figure it out.

I have a large table that contains NULL values and values like €0,00 in a field with the name price. I need to replace these values with €0,01

So I thought my rusty sql knowledge and google could help me solve this, but I am stuck.

To remove the null values I used the query:

UPDATE tblItem
SET tblItem.prijs = "€0,01"
WHERE (((tblItem.prijs) Is Null));

and that worked well to remove the NULL values and changed them to €0,01

00 to €0,01

UPDATE tblItem
SET tblItem.prijs = "€0,01"
WHERE (((tblItem.prijs) Is "€0,00"));

But it does not and I am puzzled why. It must be something very obvious that I am overlooking, but what?