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access functions

MS Access: DCount Function

This MSAccess tutorial explains how to use the Access DCount function with syntax and examples.

Description

The Microsoft Access DCount function returns the number of records from an Access table (or domain).

Syntax

The syntax for the DCount function in MS Access is:

DCount ( expression, domain, [criteria] )

Parameters or Arguments

expression
The field that you use to count the number of records.
domain
The set of records. This can be a table or a query name.
criteria
Optional. It is the WHERE clause to apply to the domain.

Applies To

The DCount function can be used in the following versions of Microsoft Access:

  • Access 2013, Access 2010, Access 2007, Access 2003, Access XP, Access 2000

Example

Let's look at how to use the DCount function in MS Access:

DCount("UnitPrice", "Order Details", "OrderID = 10248")

In this example, you would return the number of records in the Order Details table where the OrderID is 10248. This is the same as the following SQL statement:

SELECT Count([Order Details].UnitPrice) AS CountOfUnitPrice
FROM [Order Details]
WHERE ((([Order Details].OrderID)=10248));

Example in VBA Code

The DCount function can be used in VBA code in Microsoft Access.

For example:

Dim LTotal As Long

LTotal = DCount("UnitPrice", "Order Details", "OrderID = 10248")

In this example, the variable called LTotal would now contain the number of records in the Order Details table where the OrderID is 10248.

Example in SQL/Queries

You can also use the DCount function in a query in Microsoft Access.

For example:

Microsoft Access

In this query, we have used the DCount function as follows:

Expr1: DCount("UnitPrice","Order Details","OrderID = 10248")

This query will return the number of UnitPrice values from the Order Details table where the OrderID is equal to 10248. The results will be displayed in a column called Expr1. You can replace Expr1 with a column name that is more meaningful.

For example:

NumberOfUnits: DCount("UnitPrice","Order Details","OrderID = 10248")

The results would now be displayed in a column called NumberOfUnits.

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