Matching "CREATE GRAPH TYPE"

[0legmax]

CREATE GRAPH TYPE AAA AS COPY OF BBB is matched by createGraphStatement not by createGraphTypeStatement.
For some reason "TYPE" is not a reserved word in spec.

[mburbidg]

I'm not sure why TYPE is a <non-reserved word>, but CREATE GRAPH TYPE AAA is not a valid <create graph type statement>, from what I can see. The following are valid forms of <create graph type statement>.

CREATE GRAPH TYPE AAA COPY OF BBB
CREATE GRAPH TYPE AAA LIKE BBB
CREATE GRAPH TYPE AAA { ... }

None of these are ambiguous as it relates to CREATE GRAPH TYPE AAA.

At least that is the way I read the Standard.

[0legmax]

You may want to try parsing CREATE GRAPH TYPE AAA AS COPY OF BBB https://shorten.wilenskid.pl/_XUZSh

[mburbidg]

Got it, thanks for the example! It looks like the Standard is ambiguous. I'll look into it further.

[mburbidg]

I've made the working group aware of this ambiguity. I haven't heard much on it yet.