Function: TIMELINE_LAST_START_AT
Syntax: TIMELINE_LAST_START_AT(timeline_field, event|event_list)
Description: Returns the last start timestamp (entry timestamp) for a (list of) timeline event(s). This operator is currently used with the workflow_timeline field to retrieve the timestamp of when an issue entered a specific workflow status for the last time. More timeline fields will be made available in the future.
Timeline events can be open or closed. An event is open when the item is currently in that state (e.g. the issue is currently in the workflow status In Progress). Open events have a start_at but no end_at. On the other side, closed events describe states that happened in the past and have both a start_at and an end_at.
See the section Structure of timeline fields for a detailed example of timeline.
Sample usage:
TIMELINE_LAST_START_AT(workflow_timeline, "In Progress")returns the timestamp of the last time the issue entered the workflow statusIn Progress.TIMELINE_LAST_START_AT(workflow_timeline, ["In Progress", "Staging"])returns the timestamp of the last time the issue entered the workflow statusIn ProgressorStaging, whichever is last.
Structure of timeline fields:
Timeline fields (e.g. workflow_timeline) are arrays of timeline events. Each timeline event represents a transient state between two transitions (e.g. time spent in the In Progress workflow status). TIMELINE_* operators are used to ease the manipulation of timeline events.
Timeline fields can be displayed in reports and look like this:
[
{
"name": "To Do",
"end_at": "2023-03-31T14:04:40Z",
"name_id": "10002",
"start_at": "2022-10-07T13:39:19Z"
},
{
"name": "In Progress",
"end_at": "2024-01-15T14:10:06Z",
"name_id": "10003",
"start_at": "2023-03-31T14:04:40Z"
},
{
"name": "In Review",
"end_at": "2024-01-15T14:10:10Z",
"name_id": "10004",
"start_at": "2024-01-15T14:10:06Z"
},
{
"name": "Staging",
"end_at": null,
"name_id": "10005",
"start_at": "2024-01-15T14:10:10Z"
}
]