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Add columns in riversegments :

ALTER TABLE ccm21.riversegments ADD COLUMN scheid numeric
ALTER TABLE ccm21.riversegments ADD COLUMN shree numeric

And in scheider_temp_test :

source("EDACCM/init.r")
#########################"
# chargement des données
############################
ccm=new("BaseEdaCCMriversegments",
		baseODBC="baseODBCccm",
		schema="ccm21",
		table="riversegments",
		prkey="gid",
		zonegeo="France")
ccm<-loaddb(ccm)
ccm1<-stream_order(ccm,silent=FALSE) # calculates shreve stream order
import_column(ccm1,newcolumn="shree",newcolumntype="numeric",display=TRUE)