vba - Put Excel array values in cache -


i have large database (700.000+ lines in 20 columns) import in excel , different manipulations on.

an example of such manipulation categorizing. use 2 columns: material type , category , output in column 'final category' by:

if materialtype = "serv" or category = "service" finalcategory = "service"

what fastest way perform calculation?

currently use loop , disabled application.screenupdating.

i wondering, there way put these columns in cache , run it?

hope can help,

cheers!

let's 'materialtype' column , 'category' column b , 'finalcategory' column u. can try this:

dim strformula string  strformula = "=if(or(a1=""serv"",b1=""service""),""serv"","""")" sheet1.range("u1:u700000").formula = strformula

this avoids looping on 700,000 rows , doing indvidual operation, can painfully slow no screen updating.


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