How to get last second of every minute from mongoDB using SQL query - sql

Question

I have a table with records for every millisecond. I need to get only the last second of every minute using Mongodb sql query.
Id Balance DataTime
1 "2462188.61" 2019-09-27T05:49:33.575+00:00
1 "2449426.30" 2019-10-30T19:30:52.513+00:00
1 "2456459.67" 2019-10-15T18:20:09.490+00:00
5 "1006266.91" 2019-10-31T13:48:18.290+00:00
I tried the LIKE condition but that didn't work.
Select Id, DateTime,Balance from AccountBalance where DateTime like '%59.000%'
Here is the link for the mongoldb SQL reference :
https://docs.mongodb.com/bi-connector/current/supported-operations/
I am using the BI connector to connect to Tableau(hence need the sql version of the query)
Thanks in advance!

Answer 1

You could try...
db.z.aggregate([
{ $addFields: {
year: { $dateToString: { format: "%Y", date: "$DataTime" } },
month: { $dateToString: { format: "%m", date: "$DataTime" } },
day: { $dateToString: { format: "%d", date: "$DataTime" } },
hour: { $dateToString: { format: "%H", date: "$DataTime" } },
minute: { $dateToString: { format: "%M", date: "$DataTime" } },
second: { $dateToString: { format: "%S", date: "$DataTime" } }
}
}
]).pretty()
This assumes your field DataTime is of type ISODate()...
Example Documents:
{ "_id" : ObjectId("5dea94c3b4ae6bbc17cd023b"), "Balance" : "2462188.61", "DataTime" : ISODate("2019-09-27T05:49:33.575Z") }
{ "_id" : ObjectId("5dea94c3b4ae6bbc17cd023c"), "Balance" : "2449426.30", "DataTime" : ISODate("2019-10-30T19:30:52.513Z") }
{ "_id" : ObjectId("5dea94c3b4ae6bbc17cd023d"), "Balance" : "2456459.67", "DataTime" : ISODate("2019-10-15T18:20:09.490Z") }
{ "_id" : ObjectId("5dea94c3b4ae6bbc17cd023e"), "Balance" : "1006266.91", "DataTime" : ISODate("2019-10-31T13:48:18.290Z") }
Example Query Output:
{
"_id" : ObjectId("5dea94c3b4ae6bbc17cd023b"),
"Balance" : "2462188.61",
"DataTime" : ISODate("2019-09-27T05:49:33.575Z"),
"year" : "2019",
"month" : "09",
"day" : "27",
"hour" : "05",
"minute" : "49",
"second" : "33"
}
{
"_id" : ObjectId("5dea94c3b4ae6bbc17cd023c"),
"Balance" : "2449426.30",
"DataTime" : ISODate("2019-10-30T19:30:52.513Z"),
"year" : "2019",
"month" : "10",
"day" : "30",
"hour" : "19",
"minute" : "30",
"second" : "52"
}
{
"_id" : ObjectId("5dea94c3b4ae6bbc17cd023d"),
"Balance" : "2456459.67",
"DataTime" : ISODate("2019-10-15T18:20:09.490Z"),
"year" : "2019",
"month" : "10",
"day" : "15",
"hour" : "18",
"minute" : "20",
"second" : "09"
}
{
"_id" : ObjectId("5dea94c3b4ae6bbc17cd023e"),
"Balance" : "1006266.91",
"DataTime" : ISODate("2019-10-31T13:48:18.290Z"),
"year" : "2019",
"month" : "10",
"day" : "31",
"hour" : "13",
"minute" : "48",
"second" : "18"
}

Answer 2

use sort function with date
eg:
db.collection.find().sort("Date_Field")