On 2023-10-20 15:49 +0200, David Wheeler wrote: > On Oct 19, 2023, at 23:49, Erik Wienhold <e...@ewie.name> wrote: > > > I don't even know what that represents, probably not some fancy file > > compression.
That's an AppleSingle file according to [1][2]. It only contains the resource fork and file name but no data fork. > Oh, weird. Trying from a webmail client instead. Thanks. > + Does JSON path return any item for the specified JSON value? Use only > + SQL-standard JSON path expressions, not > + <link linkend="boolean-predicate-path-expressions">predicate check > + expressions.</link> Any reason for calling it "predicate check expressions" (e.g. the link text) and sometimes "predicate path expressions" (e.g. the linked section title)? I think it should be named consistently to avoid confusion and also to simplify searching. > + Returns the result of a JSON path > + <link linkend="boolean-predicate-path-expressions">predicate > + check</link> for the specified JSON value. If the result is not > Boolean, > + then <literal>NULL</literal> is returned. Use only with > + <link linkend="boolean-predicate-path-expressions">predicate check > + expressions.</link> Linking the same section twice in the same paragraph seems excessive. > +<prompt>=></prompt> <userinput>select jsonb_path_query(:'json', > '$.track.segments');</userinput> > +select jsonb_path_query(:'json', '$.track.segments'); Please remove the second SELECT. > +<prompt>=></prompt> <userinput>select jsonb_path_query(:'json', 'strict > $.track.segments[0].location');</userinput> > + jsonb_path_query > +------------------- > + [47.763, 13.4034] Strict mode is unnecessary to get that result and I'd omit it because the different modes are not introduced yet at this point. > +<prompt>=></prompt> <userinput>select jsonb_path_query(:'json', 'strict > $.track.segments.size()');</userinput> > + jsonb_path_query > +------------------ > + 2 Strict mode is unnecessary here as well. > + using the lax mode. To avoid surprising results, we recommend using > + the <literal>.**</literal> accessor only in the strict mode. The Please change to "in strict mode" (without "the"). [1] https://www.rfc-editor.org/rfc/rfc1740.txt [2] https://web.archive.org/web/20180311140826/http://kaiser-edv.de/documents/AppleSingle_AppleDouble.pdf -- Erik
