id may be used to identify the transaction in subsequent
[Read][google.spanner.v1.Spanner.Read],
[ExecuteSql][google.spanner.v1.Spanner.ExecuteSql],
[Commit][google.spanner.v1.Spanner.Commit], or
[Rollback][google.spanner.v1.Spanner.Rollback] calls.
Single-use read-only transactions do not have IDs, because
single-use transactions do not support multiple requests.
For snapshot read-only transactions, the read timestamp chosen
for the transaction. Not returned by default: see
[TransactionOptions.ReadOnly.return_read_timestamp][google.spanner.v1.TransactionOptions.ReadOnly.return_read_timestamp].
A timestamp in RFC3339 UTC "Zulu" format, accurate to nanoseconds.
Example: "2014-10-02T15:01:23.045123456Z".
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eTransaction\u003c/code\u003e class in the \u003ccode\u003eGoogle.Cloud.Spanner.V1\u003c/code\u003e namespace represents a database transaction and implements several interfaces including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThis class is available in multiple versions, with the latest being \u003ccode\u003e5.0.0-beta05\u003c/code\u003e and a current stable release being version \u003ccode\u003e4.6.0\u003c/code\u003e, and further down \u003ccode\u003e3.7.0\u003c/code\u003e being the first version shown.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTransaction\u003c/code\u003e class provides two constructors, a default one and another that accepts another \u003ccode\u003eTransaction\u003c/code\u003e object for copying, and it is inherited from the \u003ccode\u003eObject\u003c/code\u003e class.\u003c/p\u003e\n"],["\u003cp\u003eKey properties within the \u003ccode\u003eTransaction\u003c/code\u003e class include \u003ccode\u003eId\u003c/code\u003e, a \u003ccode\u003eByteString\u003c/code\u003e used for identifying the transaction, and \u003ccode\u003eReadTimestamp\u003c/code\u003e, a \u003ccode\u003eTimestamp\u003c/code\u003e reflecting the chosen read time for snapshot read-only transactions.\u003c/p\u003e\n"],["\u003cp\u003eThe current version being used is version 3.7.0, as is indicated at the top of the content section.\u003c/p\u003e\n"]]],[],null,[]]
