> Could you just have a look to the output below? I try to add a column > to a > table named "in" (I know "in" is a reserved keyword but the table > exists and > I cannot change it). Postgresql complains that the column already > exist but > it didn't. Am I doing something wrong ? Try: ALTER TABLE "in" add column INDESCS VARCHAR[]; (note the double quotes and lower-case "in")