Selecting Data

Specifying Columns in the Output

By default, no columns are included in the output. You must specify the columns that you want to appear in the output table. You can also specify an alias to use in place of the column name in the output table.

The order in which the columns are listed on the Select tab is the order in which they appear in the output table.

To select columns for the output table:

In the query window, click the Columns tab to view the list of columns from the tables in the query.
You can add one or more columns to the output data by dragging them from the columns list to the Select tab. You can also click on the Select tab toolbar and select one or more columns from the Choose Column window.

To specify an alias for a column:

On the Select tab, enter the alias that you want to use for each column. The alias is used as the column heading for the output data.

Using Summary Functions

You can perform summary functions on any of the columns in your query. To perform a summary function, select the column on which you want to perform a summary function. Use the drop-down list in the Summary column to select the function that you want to use. By default, the query generates an output data set. The following example shows you how to find the average age of all of the students:

Query Window with a Summary Function on the Age Column

By default, the query generates an output table with the results:

By default, when you summarize a column, your output is grouped by all of the columns without summaries. For more information, see Grouping Your Output.