WebSELECT truncHour(max(ts)), count(ts) FROM myTable GROUP BY truncHour(ts) 有没有更 … WebSolved: Use Django Model to find 1 record per hour, and the most recent one from another …

django - Django中的时间戳记TruncHour聚合 - Timestamp …

WebTRUNCHOUR Truncate to the Hour {double} TRUNCHOUR(DateTime, [Hours = 1]) Number of arguments: 1-2 Argument-expansion: values Returns the given DateTime truncated down to the exact hour. If Hours is greater than 1, the given DateTime is truncated down to the interval of the given Hours (e.g. 2 hours, 3 hours, etc.). WebDRF: group by DateTimeField. #!/usr/bin/env python """ Author: hyh Email: … how does a central heating valve work

Django TruncHour without other date fields - Stack Overflow

WebDjango usually uses the databases' extract function, so you may use any lookup_name that … WebWarning. A Python value passed to Coalesce on MySQL may be converted to an incorrect type unless explicitly cast to the correct database type: >>> from django.db.models import DateTimeField >>> from django.db.models.functions import Cast, Coalesce >>> from django.utils import timezone >>> now = timezone.now() >>> Coalesce('updated', … phonostar anmelden