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Create a calculate column in a view

In addition to using aggregate functions to aggregate data, you can create custom expressions to produce aggregate values. You can use custom expressions in place of aggregate functions anywhere in an aggregate query.

For example, in the Books table you might want to create a query that shows not just the average price, but what the average price would be if the books were discounted.

To specify a custom expression for a summary value

1. Specify the groups for your query. For details, see Group Rows in query results.

2. Move to a blank row of the Grid Pane, and then type the expression in the Columns column. The program automatically assigns a column alias to the expression to create a useful column heading in query output. For more details, see Customize the column names.

3. In the Group By column for the expression, select Expression.

You can create a new field that displays the results of a calculation you define with an expression or that manipulates field values.

Related Topics:

About calculations in a view

About aggregate functions

Specifying conditions for groups

Group Rows in query results

About SQL Query Builder

SQL Query Builder Layout

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