$dateSubtract not recognized for Mongo Database

Hi, I'm trying an aggregation function called $dateSubtract to get the previous months value. But the query doesn't recognize the function.


This is my query:

    "$addFields": {
        "previous_month": {
            "$dateSubtract": {
                "startDate": "$startTime",
                "unit": "month",
                "amount": 1,
                "timezone": "Asia/Riyadh"
    "$project": {
        "_id": 0,
        "PM": "$previous_month"

Here are the diagnostics

"browser-info": {
"language": "en-US",
"platform": "Win32",
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36 Edg/97.0.1072.55",
"vendor": "Google Inc."
"system-info": {
"file.encoding": "UTF-8",
"java.runtime.name": "OpenJDK Runtime Environment",
"java.runtime.version": "11.0.12+7",
"java.vendor": "Eclipse Foundation",
"java.vendor.url": "https://adoptium.net/",
"java.version": "11.0.12",
"java.vm.name": "OpenJDK 64-Bit Server VM",
"java.vm.version": "11.0.12+7",
"os.name": "Linux",
"os.version": "4.15.0-1065-aws",
"user.language": "en",
"user.timezone": "Asia/Riyadh"
"metabase-info": {
"databases": [
"hosting-env": "unknown",
"application-database": "postgres",
"application-database-details": {
"database": {
"name": "PostgreSQL",
"version": "12.7"
"jdbc-driver": {
"name": "PostgreSQL JDBC Driver",
"version": "42.2.23"
"run-mode": "prod",
"version": {
"date": "2021-10-21",
"tag": "v0.41.1",
"branch": "release-x.41.x",
"hash": "76aa4a5"
"settings": {
"report-timezone": "Asia/Kuwait"

Hi @shahmirali
You should upgrade immediately to latest release: https://github.com/metabase/metabase/releases/latest
Which version of Mongo and can you run this query directly on Mongo?

Hi @flamber
I'm using version 4.2.3. And yes it runs directly on Mongo (see below.
By the way its the same case with $dateDiff function as well

@shahmirali $dateSubtract is only available in Mongo 5.0: