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In the Column Details panel, you can review additional details about a column of your dataset. Select Column Details from any column menu or the Action menu in the column browser.

Tip: Use the Column Details panel to explore values in an individual column, when the context of the value is not important for your current exploration. For example, you can identify outlier values for the column or compare the number of unique values to number of rows to determine whether the column could be a key value.

 

Overview tab


Figure: Column Details panel - Overview tab

Column statistics:

You can use this view to review basic counts and percentages of the values in the currently selected column. In addition to basic computations on valid, mismatched, and missing values, you can see breakdowns for the most frequent values and outlier values. 

NOTE: Before your job is run, profiling information such as column statistics are exact counts of the sample that is currently loaded. After the job is run, profiled results in the Job Results page might include estimates for some metrics and counts, depending on the scale of the dataset.

Depending on the data type of the column, additional statistics provide information on data quality and variation. For more information, see Column Statistics Reference.

Actions:

  • To change the data type, click the type indicator next to the column title in the Column Details panel.
  • To perform commands on the column, select from the drop-down next to the column title. For more information, see Column Menus.
  • Use the data quality bar to select categories of values: valid, mismatched, or missing. The context panel is updated based on your selection with recommended recipe steps. See Suggestion Cards Panel.

Patterns tab

The Patterns tab is not available in Trifacta Wrangler.

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