jdbc的一个特性是将多个查询分组在一个单元中，并在一次网络访问中将其传递给数据库。
如本代码示例所示：

String[] EMPLOYEES = new String[]{"Zuck","Mike","Larry","Musk","Steve"};
String[] DESIGNATIONS = new String[]{"CFO","CSO","CTO","CEO","CMO"};

String insertEmployeeSQL = "INSERT INTO EMPLOYEE(ID, NAME, DESIGNATION) VALUES (?,?,?)";
PreparedStatement employeeStmt = connection.prepareStatement(insertEmployeeSQL);

for(int i = 0; i < EMPLOYEES.length; i++){
    String employeeId = UUID.randomUUID().toString();
    employeeStmt.setString(1,employeeId);
    employeeStmt.setString(2,EMPLOYEES[i]);
    employeeStmt.setString(3,DESIGNATIONS[i]);
    employeeStmt.addBatch();
}
employeeStmt.executeBatch();

但是，在sql中，我们可以使用具有许多值组的插入，就像：

String[] EMPLOYEES = new String[] {"Zuck","Mike","Larry","Musk","Steve"};
String[] DESIGNATIONS = new String[] {"CFO","CSO","CTO","CEO","CMO"};

StringBuilder insertEmployeeSQL = "INSERT INTO EMPLOYEE(ID, NAME, DESIGNATION) VALUES (?,?,?)"
    + ", (?, ?, ?)".repeat(EMPLOYEES.length - 1);

PreparedStatement employeeStmt = connection.prepareStatement(insertEmployeeSQL.toString());

int columnIndex = 0;
for(int i = 0; i < EMPLOYEES.length; i++){
    String employeeId = UUID.randomUUID().toString();
    employeeStmt.setString(++columnIndex, employeeId);
    employeeStmt.setString(++columnIndex, EMPLOYEES[i]);
    employeeStmt.setString(++columnIndex, DESIGNATIONS[i]);
}

employeeStmt.execute();

我需要知道的是，这两种方法有什么区别？
组织分解结构：
第一个例子来自这里https://www.baeldung.com/jdbc-batch-processing 第二本由我编辑。英语不是我的母语，这是我的第一篇帖子，所以很抱歉。