我想将日期编号转换为日期名称

Question

i want to get a date and day name in one column for which i have made dynamic date but i am unable to create day name from day number and mix both date and day name in one column. please help.

T 
| where name has "Samplelog"
| extend Eventdate = strcat(datetime_part("day",timestamp))
| extend day_strg = tostring(Eventdate)
| extend day_Alp = dynamic({"0":"Sun", "1":"Mon", "2":"Tue", "3": "Wed", "4": "Thu", "5":"Fri", "6": "Sat"})
| extend day_num = dayofweek(timestamp) / 1d
| extend months = dynamic({"1":"Jan", "2":"Feb", "3":"Mar", "4":"Apr","5":"May","6":"Jun","7":"Jul","8":"Aug","9":"Sep","10":"Oct","11":"Nov","12":"Dec"})
| extend Eventdate = strcat(datetime_part("day",timestamp),"-",months[tostring(getmonth(timestamp))], "-", getyear(timestamp))
| extend Week_Num = case(day_strg in (range(1, 7, 1)), "1", day_strg in (range(8, 14, 1)), "2",day_strg in (range(15, 21, 1)), "3",day_strg in (range(22, 31, 1)), "4", "0")
| extend weekend = iff(Week_Num in (2,4) and day_num == 6 or day_num == 0, "weekend", "working day")
//| summarize Count=count() by bin(timestamp,1d)

Answer 1

let prm_day_of_week = dynamic(["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]);
let prm_month = dynamic(["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]);
let mydata = materialize (range i from 1 to 10 step 1 | extend dttm = ago(rand()*1d*365));
mydata
| extend dayofweek = dayofweek(dttm), monthofyear = monthofyear(dttm)
| extend dayofweek_name = prm_day_of_week[toint(dayofweek/1d)], monthofyear_name = prm_month[monthofyear-1]

i	dttm	dayofweek	monthofyear	dayofweek_name	monthofyear_name
3	2021-04-11T17:03:13.0661553Z	00:00:00	4	Sun	Apr
6	2021-05-31T20:39:37.7726143Z	1.00:00:00	5	Mon	May
1	2021-06-21T19:11:27.7126358Z	1.00:00:00	6	Mon	Jun
10	2021-06-23T00:28:09.1442068Z	3.00:00:00	6	Wed	Jun
7	2021-06-25T22:32:22.4456643Z	5.00:00:00	6	Fri	Jun
4	2021-08-05T02:47:06.9960523Z	4.00:00:00	8	Thu	Aug
5	2021-09-24T10:09:35.0279053Z	5.00:00:00	9	Fri	Sep
8	2022-02-06T08:55:36.8755718Z	00:00:00	2	Sun	Feb
2	2022-02-28T07:11:29.5729928Z	1.00:00:00	2	Mon	Feb
9	2022-03-02T00:26:16.2603593Z	3.00:00:00	3	Wed	Mar

Fiddle