Load Record with Max value only

[#1]

From the following script, i only want to load the record with the max setupdate

I am really struggling making others' answers work for my application.It's a simple thought...so i'm sure someone has a simple answer

Temp:

LOAD * INLINE [

    Company, Contact, SetupDate, Source,   RecNo

    1,  David,   41607,    AMP,       123

    1,  Tom,     41609,    Label,     456

    1,  Mary,    41610,    Internet,  789

    2,  Joe,    40600,    Referral,   1011

    3,  Tom,    41666,    Internet,   1213

    3,  Peter,   40600,    AMP,       1415

];

I want to return all fields, Company, Contact, Source, Recno ...but only the one with the max date. (By company)

Final:

LOAD * INLINE [

    Company, Contact, SetupDate, Source,   RecNo

    1,  Mary,    41610,    Internet,  789

    2,  Joe,    40600,    Referral,   1011

    3,  Tom,    41666,    Internet,   1213

];

so i should return 3 records...the 3rd, 4th, and 5th records based on the setupdate by company. I want to do this in the script, please help

-David

[venkatg6759]

Left Join (Temp)

Load

Company,

max(Timestamp(SetupDate),'MM/DD/YYYY hh:mm:ss') as MaxDate

Resident Temp Group by Company;

Final:

Noconcatenate

Load * Resident Temp Where SetupDate=MaxDate;

Drop Table Temp;

[venkatg6759]

Check the attachment .

Thanks,

Venkata

[#4]

Thank you for the quick response...My reload is getting hung up on doing it this way...is there another way to attack this problem?

[#5]

Thank you! I'm unfortunately on personal edition

[venkatg6759]

Copy the code

Temp:

LOAD * INLINE [

    Company, Contact, SetupDate, Source,   RecNo

    1,  David,   41607,    AMP,       123

    1,  Tom,     41609,    Label,     456

    1,  Mary,    41610,    Internet,  789

    2,  Joe,    40600,    Referral,   1011

    3,  Tom,    41666,    Internet,   1213

    3,  Peter,   40600,    AMP,       1415

];

Left Join (Temp)

Load

Company,

max(Timestamp(SetupDate),'MM/DD/YYYY hh:mm:ss') as MaxDate

Resident Temp Group by Company;

Final:

Noconcatenate

Load * Resident Temp Where SetupDate=MaxDate;

Drop Table Temp;

[#7]

This is just a small example, that i'm trying to port over into a larger process...is there another way to get after this same solution?

Thank you sincerely !!

[venkatg6759]

Post your qvw and let us know know what you are trying to accomplish.

[rwunderlich]

I would approach it like this:

INNER JOIN (Temp)

LOAD

  max(SetupDate) as SetupDate,

  Company

RESIDENT Temp

GROUP BY Company

;

-Rob

[#10]

Hi David,

you can fill first a refenrece table ony with max dates by company you want to keep

LOAD

Company,          as Ref_Company

max(contact)      as Ref_date

from ... group by company

Then load your full table

LOAD * FROM .... WHERE EXISTS(Ref_Company & Ref_Date, Company & Contatc)

best regards

chris