Ron de Bruijn wrote:
I made some examples showing some apparent inconsistencies between the documented SQL grammar and the implemented SQL grammar.

Only the second of these prompts a manual tweak, as I see it.

(* now, pick rule Q -> q -> P -> p,+  , this doesn't work. *)

val notok:transaction (option {T : {A : a, B : b}}) = oneOrNoRows (SELECT t.{{c}}, FROM t)

Section 4.1 of the manual lays out some possibly non-standard conventions for interpreting grammar rules. In particular "e,+" stands for a sequence of "e"s separated by commas, not a nonempty sequence of "e," units.

(* let's take another derivation:
Q -> q -> P -> p -> E AS f
               .....      .....
              ..              ....
            ...                  ..
           ..                     ...
         t.{{c}}                    Whatever


=> t.{{c}} AS MyColumnName is a valid derivation

Good catch.  Fixed by changing the first production of "E".

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