presto-parser/src/main/java/io/prestosql/sql/parser/SqlParser.java/SqlParser/exitBackQuotedIdentifier
class SqlParser:        @Override
        public void exitBackQuotedIdentifier(SqlBaseParser.BackQuotedIdentifierContext context)
        {
            Token token = context.BACKQUOTED_IDENTIFIER().getSymbol();
            throw new ParsingException(
                    "backquoted identifiers are not supported; use double quotes to quote identifiers",
                    null,
                    token.getLine(),
                    token.getCharPositionInLine());
        }