Re: [R] compare two lists with differents levels

Navarre Sabine wrote: Make all factor objects to include *all* levels, I guess (since the huge exmple stuff below is not reproducible). Uwe Ligges > Hi, > I would like to compare 2 lists resulted from a sql query! bu there are > different levels, so when I want to do: > > > release1<-sqlQu

[R] compare two lists with differents levels

Hi, I would like to compare 2 lists resulted from a sql query! bu there are different levels, so when I want to do: release1<-sqlQuery(channel,paste("select distinct c.ID,c.Title TitleCrit from category cat, category_criteria cc, criteria c, question_criteria qc, question q, form_question fq,