I mean the postgres parser (and semantic changes) for ZetaSQL. The zetasql parser is in a file called zetasql/parser/bison_parser.y, I strongly suspect they no

I mean the postgres parser (and semantic changes) for ZetaSQL. The zetasql parser is in a file called zetasql/parser/bison_parser.y, I strongly suspect they now have a file called something like zetasql/pgparser/bison_parser.y as well (and much more pervasive changes to support the deeper differences in the dialects). This is the lexical structure and syntax docs for the new postgres inteface to cloud spanner: https://cloud.google.com/spanner/docs/postgresql/lexical https://cloud.google.com/spanner/docs/postgresql/lexical And this is the zetasql lexical structure and syntax docs: https://github.com/google/zetasql/blob/master/docs/lexical.md https://github.com/google/zetasql/blob/master/docs/lexical.m... Notice that the new PG docs are an edit of the Zeta ones - evidence that my hypothesis is correct.