sql - Import .csv file to SAS, clean NULLs -

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i'm importing .csv files sas using proc import works fine. however, of quantitative columns have nulls generated .csv files exporting sql. when sas goes through columns, classifies these columns character if 1 of 1000 entries null (which sas thinks string).

is there way tell sas null represents missing value , should taken care of accordingly?

thanks

not proc import. pre-process file , convert string 'null' actual empty space. 

data _null_;    infile 'my.csv' dsd truncover length=ll column=cc ;    outfile 'new.csv' dsd ;    length cell $5000 ;    while (cc < ll);      input cell @;      if cell='null' cell=' ';      put cell @;    end;    put; run;

or read file using data step , create user defined informat converts 'null' missing.

proc format ;   invalue nulls 'null'=. ; run; data _null_ ;    infile 'my.csv' dsd ;    informat mynumber nulls. ;    input mynumber ; run;

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