HarmonyOS 数据库的beginTrans使用异常

let sqlCreateTable = "CREATE TABLE IF NOT EXISTS test (id INTEGER PRIMARY KEY, repr floatvector(8));"; 
let sqlInsert = "INSERT INTO test VALUES(1, '[1.2, 0.3, 3.2, 1.6, 2.5, 3.1, 0.8, 0.4]');"; 
let sqlQuery = "SELECT id FROM test order by repr <-> '[1.1, 0.3, 2.2, 6.6, 1.5, 3.1, 0.6, 0.2]' limit 3;";