I just asked myself the question for SQL's AND and OR this week. Apparently AND takes precedence but I don't know if it is consistent accross all SQL engines. I

I just asked myself the question for SQL's AND and OR this week. Apparently AND takes precedence but I don't know if it is consistent accross all SQL engines. In any case it seems to me that few programers will know anyway, so it is bad practice to not have parenthesis.