INFORMATION_SCHEMA.ASSIGNMENT_CHANGES 뷰에는 관리 프로젝트 내에 있는 모든 할당 변경사항에 대한 거의 실시간에 가까운 목록이 포함됩니다. 각 행은 단일 할당에 대한 단일 변경사항을 나타냅니다. 예약에 대한 자세한 내용은 예약 소개를 참조하세요.
필요한 권한
INFORMATION_SCHEMA.ASSIGNMENT_CHANGES 뷰를 쿼리하려면 프로젝트에 대한 bigquery.reservationAssignments.list Identity and Access Management(IAM) 권한이 필요합니다.
사전 정의된 다음 IAM 역할에는 각각 필수 권한이 포함되어 있습니다.
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-08-26(UTC)"],[[["\u003cp\u003eThe \u003ccode\u003eINFORMATION_SCHEMA.ASSIGNMENT_CHANGES\u003c/code\u003e view provides a real-time log of all changes made to assignments within the administration project, with each row representing a single assignment change.\u003c/p\u003e\n"],["\u003cp\u003eAccess to query this view requires the \u003ccode\u003ebigquery.reservationAssignments.list\u003c/code\u003e IAM permission, which is included in several predefined roles such as \u003ccode\u003eroles/bigquery.resourceAdmin\u003c/code\u003e, \u003ccode\u003eroles/bigquery.user\u003c/code\u003e, and \u003ccode\u003eroles/bigquery.admin\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe schema includes details like \u003ccode\u003echange_timestamp\u003c/code\u003e, \u003ccode\u003eproject_id\u003c/code\u003e, \u003ccode\u003eassignment_id\u003c/code\u003e, \u003ccode\u003ereservation_name\u003c/code\u003e, \u003ccode\u003eaction\u003c/code\u003e (CREATE, UPDATE, DELETE), and \u003ccode\u003euser_email\u003c/code\u003e indicating who made the change.\u003c/p\u003e\n"],["\u003cp\u003eData within the view is retained for a maximum of 41 days after a deletion occurs, and the view must be queried using a region qualifier, like \u003ccode\u003eregion-us\u003c/code\u003e, to specify the data's geographic scope.\u003c/p\u003e\n"],["\u003cp\u003eAn example query demonstrates retrieving the most recent update, user email, and associated details for a specific assignment within a defined date range from the \u003ccode\u003eregion-us\u003c/code\u003e region.\u003c/p\u003e\n"]]],[],null,["# ASSIGNMENT_CHANGES view\n=======================\n\nThe `INFORMATION_SCHEMA.ASSIGNMENT_CHANGES` view contains a near real-time list\nof all changes to assignments within the administration project. Each row\nrepresents a single change to a single assignment. For more information about\nreservation, see [Introduction to Reservations](/bigquery/docs/reservations-intro).\n\nRequired permission\n-------------------\n\nTo query the `INFORMATION_SCHEMA.ASSIGNMENT_CHANGES` view, you need the\n`bigquery.reservationAssignments.list` Identity and Access Management (IAM) permission for\nthe project.\nEach of the following predefined IAM roles includes the required\npermission:\n\n- `roles/bigquery.resourceAdmin`\n- `roles/bigquery.resourceEditor`\n- `roles/bigquery.resourceViewer`\n- `roles/bigquery.user`\n- `roles/bigquery.admin`\n\nFor more information about BigQuery permissions, see\n[Access control with IAM](/bigquery/docs/access-control).\n\nSchema\n------\n\nThe `INFORMATION_SCHEMA.ASSIGNMENT_CHANGES` view has the following\nschema:\n\nData retention\n--------------\n\nThis view contains current assignments and deleted assignments that are\nkept for a maximum of 41 days after which they are removed from the view.\n\nScope and syntax\n----------------\n\nQueries against this view must include a [region qualifier](/bigquery/docs/information-schema-intro#syntax).\nIf you do not specify a regional qualifier, metadata is retrieved from all\nregions. The following table explains the region scope for this view:\n\nReplace the following:\n\n- Optional: \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: the ID of your Google Cloud project. If not specified, the default project is used.\n- \u003cvar translate=\"no\"\u003eREGION\u003c/var\u003e: any [dataset region name](/bigquery/docs/locations). For example, ```region-us```.\n\n \u003cbr /\u003e\n\n \u003cbr /\u003e\n\n | **Note:** You must use [a region qualifier](/bigquery/docs/information-schema-intro#region_qualifier) to query `INFORMATION_SCHEMA` views. The location of the query execution must match the region of the `INFORMATION_SCHEMA` view.\n\n\u003cbr /\u003e\n\nExample\n-------\n\nThe following example displays the user who has made the latest assignment\nupdate to a particular assignment within a specified date. \n\n```googlesql\nSELECT\n user_email,\n change_timestamp,\n reservation_name,\n assignment_id\nFROM\n `region-us`.INFORMATION_SCHEMA.ASSIGNMENT_CHANGES\nWHERE\n change_timestamp BETWEEN '2021-09-30' AND '2021-10-01'\n AND assignment_id = 'assignment_01'\nORDER BY\n change_timestamp DESC\nLIMIT 1;\n```\n\nThe result is similar to the following: \n\n```\n+--------------------------------+-----------------------+--------------------+-----------------+\n| user_email | change_timestamp | reservation_name | assignment_id |\n+--------------------------------+-----------------------+--------------------+-----------------+\n| cloudysanfrancisco@gmail.com |2021-09-30 09:30:00 UTC| my_reservation | assignment_01 |\n+--------------------------------+-----------------------+--------------------+-----------------+\n```"]]
