[Home](./index.md) > [@datashaper/schema](./schema.md) > [DeriveArgs](./schema.deriveargs.md) ## DeriveArgs interface Signature: ```typescript export interface DeriveArgs extends OutputColumnArgs ``` Extends: [OutputColumnArgs](./schema.outputcolumnargs.md) ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [column1](./schema.deriveargs.column1.md) | | string | Column on the left side of the operation | | [column2](./schema.deriveargs.column2.md) | | string | Column on the right side of the operation | | [operator](./schema.deriveargs.operator.md) | | [MathOperator](./schema.mathoperator.md) | Math operation to perform row-by-row on the two columns |