Hi 2015-08-19 21:33 GMT+02:00 Tom Lane <t...@sss.pgh.pa.us>:
> Pavel Stehule <pavel.steh...@gmail.com> writes: > > I miss a functionality that helps with parsing any identifier to basic > > three parts - database, schema, objectname. We have this function > > internally, but it is not available for SQL layer. > > > FUNCTION parse_ident(IN ident text, OUT dbname text, OUT schemaname text, > > OUT objectname text) > > What exactly would you do with this that would not be better done with, > for example, regclass? > > Don't say "parse names for things other than tables". Only a minority > of the types of objects used in the database have names that meet this > specification. > I see one important reason and one minor reason: Important - cast to regclass is possible only for existing objects - parse_ident doesn't check validity of parsed ident. minor - cast to regclass depends on search_path - but parse_ident not - with this function I am able to detect if ident depends (or not) on search_path. Regards Pavel > > regards, tom lane >
