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...e code below, but I get in return this message "*Error in decompose(ts(x[1L:wind], start = start(x), frequency = f), seasonal) : time series has no or less than 2 periods*". histValues <-ts(c(5,5,0,0,3,0,1,3,0,3,0,2,7,3,2,2,3,2,3,2,2,3,1,1,3,0,1,0,2,1,0,4,1,1,3,0,1),f=12,s=c(1998,1)) forecastValues <- croston(histValues, h=4, alpha=0.1) Does anyone know the causes and how to fix this problem? Thanks, Pedro Souto [[alternative HTML version deleted]]

line 212 of postgresql_adapter.rb is return Time.now.to_s if value =~ /^\(''now''::text\)::(date|timestamp)/ i don''t think this will work. in postgresql the field ''now'' is pinned to the SAME TIME for the duration of a transaction. eg. if you do begin transaction; insert into t values(42, ''now''); # sleep one minute