Filtering Duplicate Data

[win_anthony]

I am importing data from SQL Server and noticed that my data is getting bloated due to duplicate data that is being loaded. Is there a way to filter out duplicates and keep only the most recent data? Is this suppose to be done in Power Query at the time of ETL? Below are data: Table 1 = the current data including duplicates / Table 2 = expected output

(Table 1 = the current data including duplicates)

transaction_id	description	total	transaction_datetime
1	tacos	10.00	2021-01-26 10:00:26.000
1	tacos	10.00	2021-01-26 10:20:52.000
2	pizza	6.00	2021-02-03 12:30:43.000

(Table 2 = expected output)

transaction_id	description	total	transaction_datetime
1	tacos	10.00	2021-01-26 10:20:52.000
2	pizza	6.00	2021-02-03 12:30:43.000

Any advice will be greatly appreciated.

[parry2k · Accepted solution]

@win_anthony in power query, select all columns and then select remove duplicates.

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[win_anthony]

@parry2k After reworking your suggestion, it ultimately worked out. The only difference with your solution and mine is that I selected the individual column to remove the duplicates. My initial concern was that it was going to remove stores or other legitimate duplicates. 

Thank you so much for your support! 

[win_anthony]

@parry2k thank you for your support. Unfortunately, I am still getting the same results. My thoughts are that power query is still keeping the duplicate values because the timestamp on the duplicates are unique (please look at my sample table 1 / transaction_id = 1). 

Any other thoughts on how you would approach removing duplicates that have unique datetime stamps?