Enhance the performance for get the Max(XXXX) in the load!!

[jood_ahmad]

Dears,

i need to enhance the performance for one load that contains a max(xxxxx); let us take an example:

I'm loading from Table:

A:

load

ID,

Item&Date(Date#(Num(DateINV),'YYYYMMDD),'YYYYMMDD') as Key,

Max(Date_Time) as Today_Inventory_Date,

qty as CurrentQTY

from A.qvd

group by ID, Item, DateINV,qty;

Left Join

Load

ID,

Item&Date(Date#(Num(DateINV),'YYYYMMDD)-1,'YYYYMMDD') as Key,

Min(Date_Time) as YesterDay_Inventory_Date,

qty as YesterdayQTY

from A.qvd

group by ID, Item, DateINV,qty;

I need to differentiate between the two inventory time and keep it in the same table and this working fine with me but the Max it is very slow and i need a way to make it faster.

Why do I need to do that?  I need to get on the same row the current inventory qty and yesterday qty on the same row.

[HarishG]

Try taking Date_Time in number format. Number format takes less memory than Date formats, this might enhance the load a bit.

[jood_ahmad · Accepted solution]

I change all logic in my script and it works.