其实我们通常的解决方法无非有一下几种：上海php培训 [1] Connection con=... Statement stmt = con.createStatement(); String sqlStr = "count(*) as total "; ResultSet rst = stmt.executeQuery(sqlStr); rst.next(); int total = rst.getInt("total"); 缺点：如果想要遍历结果集，你不...
其实我们通常的解决方法无非有一下几种：上海php培训 [1] Connection con=... Statement stmt = con.createStatement(); String sqlStr = "count(*) as total "; ResultSet rst = stmt.executeQuery(sqlStr); rst.next(); int total = rst.getInt("total"); 缺点：如果想要遍历结果集，你不...
$sql = “SELECT * FROM tablename”; $result = $conn->query($sql); if ($result->num_rows > 0) { // 输出每一行数据 while($row = $result->fetch_assoc()) { echo “字段1: ” . $row[“field1″]. ”– 字段2: ” . $row[“field2”]. “ “; } } else { echo “0 结果...
DBMS_SQL.RETURN_RESULT(c1); END;';$stid = oci_parse($conn, $sql);oci_execute($stid);$stid_1 = oci_get_implicit_resultset($stid);$stid_2 = oci_get_implicit_resultset($stid);$row = oci_fetch_array($stid_1, OCI_ASSOC+OCI_RETURN_NULLS);var_dump($row);$row = oci_fetch...
After executing a statement that returns one or more result sets, use one of the methods available in the PDO API to iterate through the returned rows. The PDO API also provides methods to fetch a single column from one or more rows in the result set.
Fetch data from a result set by calling one of the following fetch methods: To return a single row from a result set as an array or object, call thePDOStatement::fetchmethod. To return all of the rows from the result set as an array of arrays or objects, call thePDOStatement::fetch...
再查阅资料和看tp5使用手册后,冷月发现将数据库配置database.php文件里的resultset_type改为collection后,就可以解决这个问题。 然后,同样的代码成功返回想要的数组: 最后的啰嗦: 只要思想不滑坡,办法总比问题多 快去学习去~ 勤加练习,早日收获自己的offer!
//创建MongoDB连接$manager=newMongoDB\Driver\Manager("mongodb://localhost:27017");//创建查询对象$query=newMongoDB\Driver\Query(['name' => 'John'], ['maxTimeMS' => 5000]);//执行查询并获取结果集$resultSet=$manager->executeQuery('mydb.mycollection',$query); ...
直接来自 oracle教程: 如果查询返回的第一个对象是ResultSet对象,则返回true。如果查询可以返回一个或多个ResultSet对象,则使用此方法。通过反复调用ResultSet检索从查询返回的Statement.getResutSet对象。 什么是“一个或多个ResultSet对象”?一旦获得了一个ResultSet数组,如何才能管理它们?而st.executeQuery(sql)和st...
if(empty($resultSet)) {// 查询结果为空 return null; } if(is_string($resultSet)){ return $resultSet; } // 读取数据后的处理 $data = $this->_read_data($resultSet[0]); $this->_after_find($data,$options); if(!empty($this->options['result'])) { return $this->returnResult($...