Customize Expectations

Add domain and internal knowledge to Expectations to express more specific criteria and precise evaluation for Expectations about data.

Restrict an Expectation to specific rows

Filter your data so that only a subset of rows are validated for a given Expectation.

Define a custom Expectation class

Define an Expectation class with additional notes and default attributes by subclassing an existing Expectation.

Use SQL to define a custom Expectation

Create an Expectation that operates by evaluating the results of a customized SQL query.

Define a Multi-source Expectation

Create an Expectation that queries multiple Data Sources and compares the results for equality.