You can extract specified date or time components and store them in a text column. This extraction is useful when you want to use a date component, such as the fiscal quarter, as a categorical variable. For example, a sales manager wants to create a bar chart where each bar shows quarterly sales. The sales manager extracts the quarter and year components of a date/time column and puts them in a text column.
When you use a text column to create a graph (or table), the text categories are in alphabetical order by default. To change the value order, right-click the column and choose.