Customize Expectations

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

Restrict an Expectation with row conditions

Use `row_conditions` to restrict the data an Expectation evaluates

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.