[LucaCappelletti94]

GRANT SELECT ON t TO PUBLIC, reader and REVOKE EXECUTE ON FUNCTION f() FROM PUBLIC, anon failed to parse with Expected: end of statement, found: reader, while the same lists with PUBLIC last parsed. PostgreSQL's grantee list is a comma-separated list of role specifications, any of which may be PUBLIC (https://www.postgresql.org/docs/current/sql-grant.html), and PostgreSQL 18 accepts both statements.

parse_grantees gives an entry that names no grantee type the type of the entry before it, so that TO GROUP a, b reads both as groups. PUBLIC is parsed as one of those types, so the entry after it was read as PUBLIC again and its name was left unconsumed. PUBLIC names a single grantee, so it no longer carries over and the next entry gets no type. MsSql reads PUBLIC as an ordinary name and is unaffected.

This PR applies to all dialects except MsSql

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.44%. Comparing base (a75e736) to head (46ba0ca).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2741   +/-   ##
=======================================
  Coverage   82.44%   82.44%           
=======================================
  Files          42       42           
  Lines       35424    35426    +2     
  Branches    35424    35426    +2     
=======================================
+ Hits        29205    29208    +3     
  Misses       2682     2682           
+ Partials     3537     3536    -1     

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