Expressions

Polars uses expressions to describe arbitrary computations that emit a single column. OpenDP parses these expressions into stable transformations.

In the following pages we describe the subset of Polars expressions supported by OpenDP. (For more information on Polars expressions outside OpenDP see the Polars User Guide and API Reference.)

OpenDP also adds extensions for differential privacy under the .dp namespace; these are documented under opendp.extras.polars.DPExpr.

• Aggregation
• Boolean
• Columns
• Manipulation
• Operators
• String
• Temporal