Dear Gents,
Could you please help me with the below?.
I'm trying to merge the countif and frequency functions to find the unique values at various times.
For example, I have the time in one sheet, and in another, I have the range time and the column where I would like to count the total unique.
Sheet1 (time)
Time
000000
000500
001000
001500
002000
Sheet2 (database)
19 000000
4 000003
19 000500
19 000501
4 000502
19 000504
1 000505
2 001000
19 001005
3 001010
4 001015
8 001020
20 001500
Desired output
Time
000000 1
000500 2
001000 4
001500 5
I have tried the below formula, but for some reason, it doesn't work, and also, it took a long time as my database has more than 40k rows
=SUMPRODUCT((data!BY:BY=VIBRO!B4)*(ROW(data!BY:BY)-ROW(data!$BY$2)+1=MATCH(data!BY:BY&data!T:T,data!BY:BY&data!T:T,0)))
Appreciate your support
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