GroupBy

Helper to build grouping rules for use with resource().aggregate()

Constructors

new GroupBy(): GroupBy

static DateTrunc(field, truncation, timezone?): IGroupByDateTrunc

Group by date truncation. Returns ISO date strings (YYYY-MM-DD) for each group.

Parameter	Type	Description
`field`	`string`	Column name (must be DATETIME/DATE type in the resource)
`truncation`	`"day"` \| `"week"` \| `"month"` \| `"year"`	'day' \| 'week' \| 'month' \| 'year'
`timezone`?	`string`	IANA timezone name, e.g. 'Europe/Kyiv'. Defaults to 'UTC' when omitted.

static Field(field): IGroupByField

Group by raw field value. The field value is returned as-is in the group key.

Parameter	Type	Description
`field`	`string`	Column name to group by