Loading only max values

[#1]

Hi guys,

I am loading an SQL table with values for Date, Type and Amount. Sometimes I have multiple values for the same Date and Type, but with different amounts. For each Date and Type combo, I'm looking to load only those records that have the Max amount.

Date     Type     Amount

x           a          10

y           a          12

z           a          8

z           a          15

So in this table I only want z, a, 15 to load. Any way I can simply do this by altering my Load script maybe?

[jpapador]

LOAD

Date,

Type,

Max(Amount) as MaxAmount

Resident Temp1

Group By Date, Type;

[its_anandrjs]

Hi,

You can try this also

Raw:
LOAD * INLINE [
Date, Type, Amount
x, a, 10
y, a, 12
z, a, 8
z, a, 15
];
 
LOAD
Max(Amount) as Amount
Resident Raw;

Left Join
LOAD * Resident Raw;

DROP Table Raw;

Regards

Anand

[Gysbert_Wassenaar · Accepted solution]

MyTable:

SQL SELECT Date, Type, Amount

FROM ...mytable...;

right join (MyTable)

LOAD Type, max(Amount) as Amount;

RESIDENT MyTable

GROUP BY Type;

[anbu1984]

LOAD

Date,

Type,

Firstsortedvalue(Amount,-Amount) as MaxAmount

Group By Date, Type;

Sql Select Date,Type,Amount From Table;

Or

LOAD

Date,

Type,

Max(Amount) as MaxAmount

Group By Date, Type;

Sql Select Date,Type,Amount From Table;

[#6]

Thanks! I couldn't get it to work at first but when I took the max of a new variable, date and type combined, the right join worked like a charm