In addition to the Data Manipulation Language (DML) based APIs, Cloud Spanner supports the mutation API, where the application describes data modification using a data structure instead of a SQL statement.
This class serves as a wrapper for all mutations types. Use the builders, such as InsertMutationBuilder or UpdateMutationBuilder to create objects of this class.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-22 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the \u003ccode\u003eMutation\u003c/code\u003e class within the Google Cloud Spanner C++ library, detailing its use in the mutation API for data modification.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version documented is 2.37.0-rc, and the page lists documentation for previous versions down to 2.11.0 for reference, with the current version being 2.22.1.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMutation\u003c/code\u003e class serves as a wrapper for various types of mutations and should be created using builders like \u003ccode\u003eInsertMutationBuilder\u003c/code\u003e or \u003ccode\u003eUpdateMutationBuilder\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe class includes constructors, assignment operators, and functions like \u003ccode\u003eas_proto()\u003c/code\u003e to convert the mutation to its underlying protocol buffer representation.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation emphasizes that empty mutations, created with the default constructor \u003ccode\u003eMutation()\u003c/code\u003e, are unusable with the Cloud Spanner mutation API.\u003c/p\u003e\n"]]],[],null,[]]
