Sergey Cherkashin <s.cherkas...@postgrespro.ru> writes: > The command "\dA" (as well as several commands that I write) accept the > access method name template. The resulting template is processed by the > processSQLNamePattern () function, which means that a template with a schema > can be fed to the input. But since the access method does not have schema, > it's needed to handle somehow a command like "\dA foo. *". At this point, the > command will display a full list of access methods, not paying attention to > the presence of the schema name in the template.
I don't see a particular problem with this. The \d commands in general are meant to accept handwritten input, so they should err on the side of being forgiving. I do not see how it would be an improvement to throw an error complaining that the pattern shouldn't have been schema-qualified for this particular type of name, nor would the alternative possibility that "*.*" silently refuses to match anything be a great idea. Also, there are cases like \dd where the same name pattern is applied to multiple kinds of objects. (I'm not sure if that particular command covers both schema-qualified and not-schema-qualified objects today, but surely it might in future.) So being picky would definitely not work well for that. > I also need a possibility to handle templates of type "schema.table.column", Why? I think you'd be best off not going there, because it will create confusion against the SQL-standard-mandated possibility of "database.schema.table". We don't really support that notation today in most contexts, but it might be a problem in future. regards, tom lane