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queries

ResolvedVersion 2003

Jake has attended:
Access Introduction course

Queries

What is the difference between null and false when making a query

RE: Queries

Hi Jake

In Access queries you usually use Is Null and Is Not Null as criteria on fields that may have blank/empty cells.

False is usually used in fields that contain check boxes where the values are True (checked) and False (Not Checked)

Hope this helps

Carlos

Access tip:

Random sampling

Data is th key to a good database, therefore checking is essential.

A good way of checking data is by random sampling. You can do this in a query, by typing the follow:
1) In the Field box create a RandonID field eg. Randon Id: Rnd(fieldname])

2) sort the field
3)Right click and chage the properties for To value to be the number of randon records you want to see.

4) Change the set to Show row for Randon ID to be False, add all the other fields you want to see and the run the query.

View all Access hints and tips

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