Dacă respingeți modulele cookie opționale, vor fi utilizate numai modulele cookie necesare pentru a vă furniza serviciile. Puteți modifica selecția făcând clic pe „Gestionare module cookie” din partea de jos a paginii.Angajament de respectare a confidenți...
System.out.println(Thread.currentThread().getName()+"读num的时候进来:"+num); } //设置num public synchronized void setnum(){ //设置num=1 num=1; System.out.println(Thread.currentThread().getName()+"写后的num:"+num); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 1...
>'. PHP_EOL;if(!$this->rs) {return$xml; }if($this->rs->NumRows() ==0) {return$xml; } $xml .='<result-set>'. PHP_EOL;$this->rs->MoveFirst();while($this->fetch()) { $xml .=$this->toXML($format, $utf8,false); } $xml .='</result-set>';return$xml; } 开发者...
resultset = mysql_store_result(conn); if (resultset) { numRows = mysql_num_rows(mysqlResult); //numFields = mysql_field_count(conn); numFields = mysql_num_fields(mysqlResult); printf("Number of rows=%u Number of fields=%u \n",numRows,numFields); ...
SqlResultSet command;if(!atrtdb.doQuery("SELECT * FROM command "\"WHERE state = 'new' ORDER BY id LIMIT 1", command)){ g_logger.critical("query failed");returnfalse; }if(command.numRows() ==0)returntrue; uint id= command.columnAsInt("id"); ...
NumOfRows 属性 此API 支持 基础结构,但不能通过代码直接使用。 命名空间: Microsoft.SqlServer.Replication.BusinessLogicSupport 程序集: Microsoft.SqlServer.Replication.BusinessLogicSupport(在 Microsoft.SqlServer.Replication.BusinessLogicSupport.dll 中) 语法 C# 复制 public int NumOfRows { get; } 属性值 类型...
ResultSetMetaData rsmd = results.getMetaData(); numCols = rsmd.getColumnCount(); 1. 2. 3. 当您获得一个 ResultSet 时,它正好指向第一行之前的位置。您可以使用 next() 方法得到其他每一行,当没有更多行时,该方法会返回 false。由于从数据库中获取数据可能会导致错误,您必须始终将结果集处理语句包括在...
ResultSet getNext() Get the next result set int getNumColumns() Return the number of columns in the result set int getNumRows() Return the number of rows in the result set JsonArray getOutput() Get the registered outputs List<JsonArray> getResults() Get the results List<JsonObj...
PDO::FETCH_NUM Returns an array indexed by column number as returned in your result set, starting at column 0. PDO::FETCH_OBJ Returns an anonymous object with property names that correspond to the column names returned in your result set. ...
ResultSet 包含任意数量的命名列,您可以按名称访问这些列。它还包含一个或多个行,您可以按顺序自上而下逐一访问。在您使用 ResultSet 之前,必须查询它包含多少个列。此信息存储在 ResultSetMetaData 对象中。 //从元数据中获得列数 ResultSetMetaData rsmd; rsmd = results.getMetaData(); numCols = rsmd....