Remove duplicates in Google Sheets: select the range, Data → Data cleanup → Remove duplicates. Sheets keeps the first copy.
Steps
1. Select the table including the header.
2. Data → Data cleanup → Remove duplicates.
3. Tick Data has header row.
4. Tick the columns to compare.
5. Click Remove duplicates. Read the popup. Click OK.
0:00 Remove duplicates
0:18 Select the table
0:32 Data cleanup
0:50 Header and columns
1:10 First copy stays
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#GoogleSheets #Spreadsheet #HowTo