Configure Sampling and Profiling

Alation Cloud Service Applies to Alation Cloud Service instances of Alation

Customer Managed Applies to customer-managed instances of Alation

Core Connector Core connectors are included with all Alation platform tiers (subject to each tier’s connector limits) and are fully supported by Alation.

Refer to Configure Sampling and Profiling for OCF Data Sources.

Note

Google BigQuery allows you to create tables using the require_partition_filter feature. This feature will enable you to run simple queries on the table only if you use a filter over the partition column. However, Alation uses simple queries to fetch the sample values of the struct column during table sampling without using a filter, causing the table sampling to fail.

To workaround this issue, change the default query to a custom query during custom table sampling. Custom query allows you to use a filter over the partition column.