Re: [libreoffice-users] [CLOSED] VLOOKUP Syntax to find MAX on a particular date

Dear fellow members,

My apologies for wasting your time and brain power, however the use of 
Calc and VLOOKUP is NOT the right tool for the job and that INDEX(MATCH) 
would have ben better, given that the downloaded .csv data file grows by 
approximately 1MB per month.

I have marked this thread as closed and shall be starting a new thread 
as I move the data file to Base. Expect the Base questions soon 0:)

Apologies again

Thank-you
Hylton

On 2022/08/08 21:25, Hylton Conacher (ZR1HPC) wrote:
> Hi,
>
> Using LO Calc 7.3.2.2 and I have a 28 column table RAW Data table in 
> excess of 65k rows. A three column sample below:
> Date                Simple Date        Outdoor Temp
> 2022-01-01T00:05:00+02:00    2022-01-01 00:05:00    17.5
> 2022-01-01T00:00:00+02:00    2022-01-01 00:00:00    17.4
>
> I have a secondary table, called Amended RAW Data containing just the 10 
> digit date and the corresponding value of the column value I am seeking, 
> whether it be the Outdoor Temp, Daily Rainfall etc
>
> What I need to do is query the following table, searching for a specific 
> 10 digit date, and find the max value on a specific date.
>
> I have tried so many different itinerations on the VLOOKUP formula and 
> browsed many elementary Google VLOOKUP pages that I need help. I have 
> tried(all return N/A):
>
> =MAX(VLOOKUP(LEFT($'RAW Data'.$B$2:$B$62037,10),$'RAW 
> Data'.$B$2:$L$62037,1,FALSE))
>
> =MAX(VLOOKUP($A11,$'RAW Data'.$B$2:$M$62037,11))
>
> =MAX(VLOOKUP($A11,$'RAW Data'.$B$2:$M$62037,11))
>
> =MAX(VLOOKUP(LEFT($'RAW Data'.$B$2:$B$62307,10)=$'Amended RAW 
> Data'.$A$11,$'RAW Data'.$B$2:$L$62037,11,0))
>
> References to 'Amended RAW Data'.$A$11 refer to a date that I know has 
> greater than zero value, and the 11th column data I want to max, within 
> a date.
>
> Help appreciated
> Hylton


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