# Generating column statistics for Iceberg tables
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Follow these steps to configure a schedule for generating statistics in the Data Catalog using AWS Glue console or AWS CLI or the or run the **StartColumnStatisticsTaskRun** operation.

**To generate column statistics**

1. Sign in to the AWS Glue console at [https://console.aws.amazon.com/glue/](https://console.aws.amazon.com/glue/). 

1. Choose **Tables** under Data Catalog .

1. Choose an Iceberg table from the list. 

1. Choose **Column statistics**, **Generate on demand**,under **Actions** menu.

   You can also choose **Generate statistics** button under **Column statistics** tab in the lower section of the **Tables** page.

1. On the **Generate statistics** page, provide the statistics generation details. Follow steps 6-11 in the [Generating column statistics on a schedule](generate-column-stats.md) section to configure a schedule for statistics generation for Iceberg tables. 

   You can also choose to generate column statistics on-demand by followin the instructions in the [Generating column statistics on demand](column-stats-on-demand.md)
**Note**  
Sampling option is not available for Iceberg tables.

   AWS Glue calculates the number of distinct values for each column of the Iceberg table to a new Puffin file committed to the specified snapshot ID in your Amazon S3 location.