How to replace blank (null ) values with 0 for all records?

Question

MS Access: How to replace blank (null ) values with 0 for all records?

I guess it has to be done using SQL. I can use Find and Replace to replace 0 with blank, but n

Answer 1

Using find and replace will work if you type "null" in the find and put a zero in the replace...you will be warned that this cannot be undone.

Answer 2

I used a two step process to change rows with "blank" values to "Null" values as place holders.

UPDATE [TableName] SET [TableName].[ColumnName] = "0"
WHERE ((([TableName].[ColumnName])=""));

UPDATE [TableName] SET [TableName].[ColumnName] = "Null"
WHERE ((([TableName].[ColumnName])="0"));

Answer 3

I would change the SQL statement above to be more generic. Using wildcards is never a bad idea when it comes to mass population to avoid nulls.

Try this:

Update Table Set * = 0 Where * Is Null; 

Answer 4

Better solution is to use NZ (null to zero) function during generating table => NZ([ColumnName]) It comes 0 where is "null" in ColumnName.

Answer 5

If you're trying to do this with a query, then here is your answer:

SELECT ISNULL([field], 0) FROM [table]

Edit

ISNULL function was used incorrectly - this modified version uses IIF

SELECT IIF(ISNULL([field]), 0, [field]) FROM [table]

If you want to replace the actual values in the table, then you'll need to do it this way:

UPDATE [table] SET [FIELD] = 0 WHERE [FIELD] IS NULL