FTS and database alias

func testWhereMatch() throws {

        Database.log.console.level = .debug

        try loadJSONResource(name: "sentences")

        let index = IndexBuilder

            .fullTextIndex(items: FullTextIndexItem.property("sentence"))

            .language(nil)

            .ignoreAccents(false)

        try db.createIndex(index, withName: "sentence")

        let alias = "db"

        let s_sentence = SelectResult.expression(Expression.property("sentence")

            .from(alias))

        let q = QueryBuilder.select([SelectResult.expression(Meta.id.from(alias)), s_sentence])

            .from(DataSource.database(db).as(alias))

            .where(FullTextExpression.index("sentence").match("'Dummie woman'"))

            .orderBy(Ordering.expression(FullTextFunction.rank("sentence")).descending())

        let numRows = try verifyQuery(q) { (n, r) in

        }

        XCTAssertEqual(numRows, 2)

    }

2019-09-06 23:12:23.989531-0700 xctest[85798:4258167] CouchbaseLite Query Info: {Query#2} Compiling JSON query: {"WHAT":[[".db._id"],[".db.sentence"]],"WHERE":["MATCH","sentence","'Dummie woman'"],"FROM":[{"AS":"db"}],"ORDER_BY":[["DESC",["RANK()","sentence"]]]}

2019-09-06 23:12:23.990462-0700 xctest[85798:4258167] CouchbaseLite Query Info: {Query#2} Compiled as SELECT "db".db.rowid, offsets(fts1."kv_default::sentence"), fl_result("db".key), fl_result(fl_value("db".body, 'sentence')) FROM kv_default AS "db" JOIN "kv_default::sentence" AS fts1 ON fts1.docid = "db".rowid WHERE (fts1."kv_default::sentence" MATCH '''Dummie woman''') AND ("db".flags & 1 = 0) ORDER BY rank(matchinfo(fts1."kv_default::sentence")) DESC

2019-09-06 23:12:23.990750-0700 xctest[85798:4258167] CouchbaseLite Database ERROR: SQLite error (code 1): no such column: db.db.rowid in "SELECT "db".db.rowid, offsets(fts1."kv_default::sentence"), fl_result("db".key), fl_result(fl_value("db".body, 'sentence')) FROM kv_default AS "db" JOIN "kv_default::sentence" AS fts1 ON fts1.docid = "db".rowid WHERE (fts1."kv_default::sentence" MATCH '''Dummie woman''') AND ("db".flags & 1 = 0) ORDER BY rank(matchinfo(fts1."kv_default::sentence")) DESC"

2019-09-06 23:12:23.990992-0700 xctest[85798:4258167] CouchbaseLite Database ERROR: no such column: db.db.rowid (1/1)

2019-09-06 23:12:23.991285-0700 xctest[85798:4258167] CouchbaseLite Database WARNING: {DB#1} SQLite error compiling statement "SELECT "db".db.rowid, offsets(fts1."kv_default::sentence"), fl_result("db".key), fl_result(fl_value("db".body, 'sentence')) FROM kv_default AS "db" JOIN "kv_default::sentence" AS fts1 ON fts1.docid = "db".rowid WHERE (fts1."kv_default::sentence" MATCH '''Dummie woman''') AND ("db".flags & 1 = 0) ORDER BY rank(matchinfo(fts1."kv_default::sentence")) DESC": no such column: db.db.rowid

<unknown>:0: error: -[CouchbaseLiteSwiftTests.QueryTest testWhereMatch] : failed: caught error: no such column: db.db.rowid