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Saturday, September 13, 2008 – Permalink –
Make Null Zero
When it is desirable to return a zero (or another value) rather than an empty field, Access (Visual Basic) has a function Nz():
When you want to display zeroes in text boxes (or datasheet columns) when there is no value in a field, the standard method is to surround the value with the Nz() function, to convert a Null value to a zero. However, this doesn't always work, especially in Access 2003, which is much more data type-sensitive than previous versions. In these cases, you can force a zero to appear instead of a blank by using two functions: first Nz() and then the appropriate numeric data type conversion function, such as CLng or CDbl. Here is a sample expression that will yield a zero when appropriate:
ACCESS Watch Vol 7 No. 5
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<Doug Klippert@ 3:32 AM
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