我想从MySQL获取当前年份和月份的记录.
我正在过去获取今天的记录
今天:("recDate","=",new Date());
像这样,如何获取当前月份和当前年份？
提前致谢
我在一个系统上有MySQL,我试图确定它是Oracle MySQL还是MySQL.Oracle MySQL之间有区别吗:
http://www.oracle.com/us/products/mysql/index.html
和"常规"MySQL:
或者他们是一样的吗？
我得到了一些我似乎无法解决的错误......这是示例代码,所以我很困惑发生了什么.错误被注释到它们出现的行的一侧.
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
public class Connect {
URL url;
URLConnection urlConnection;
DataOutputStream outStream;
DataInputStream inStream;
// Build request body
String body = "fname=" + URLEncoder.encode("Atli", "UTF-8"); //Syntax error on token ";", { expected after this token
// Create connection
url = new URL("http://192.168.1.68/test/POST/post.php");
urlConnection = url.openConnection();
((HttpURLConnection)urlConnection).setRequestMethod("POST");
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.setUseCaches(false);
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
urlConnection.setRequestProperty("Content-Length", ""+ body.length());
// Create I/O streams
outStream = new DataOutputStream(urlConnection.getOutputStream());
inStream = new DataInputStream(urlConnection.getInputStream());
// Send request
outStream.writeBytes(body);
outStream.flush(); …哪一个更快:迭代一个数组或一个对象.当我需要执行诸如从中间删除任何元素的操作时会发生什么？
var a = {"A1":1, "B1":2, "C1":3};
要么
var a = ["A1", "B1", "C1"];
我是javascript的新手,对整个编程来说相对较新.我一直在理解javascript的机制,但是我在以下情况下难以理解:
var dataTypes = {
string1: "Test",
string2: "Test",
number1: 4,
};
console.log(typeof dataTypes.number1);
console.log(" ");
for (var x in dataTypes) {
console.log(typeof x);
if ((typeof x) === "string") {
console.log(dataTypes[x]);
} else {
//
}
}
当我运行它时,我的控制台显示以下内容:
number
string
Test
string
Test
string
4
我很困惑,dataTypes.number1从数字数据类型到字符串.如果有人可以花时间详细说明我做错了什么,并解释,那将是美好的.
我想通过表单将一些参数发送到php文件以插入数据库,
<html>
<head>
<title>Self</title>
</head>
<body>
<?php
function selfcheck($DB, $TechID, $ClientID, $SiteID, $Type, $LogTime){
$dbConnection = mysql_connect($DB['server'], $DB['loginName'], $DB['password']);
if(!$dbConnection){
die('Error! ' . mysql_error());
}
mysql_select_db($DB['database'], $dbConnection);
$result = mysql_query("SELECT COUNT(*) FROM Log") or die('Error! ' . mysql_error());
while($row = mysql_fetch_array($result)){
$count = $row['COUNT(*)'];
$count = $count+1;
print $count.", ".$TechID.", ".$ClientID.", ".$SiteID.", ".$LogTime.", ".$Type."<br>";
$query = "INSERT INTO Log (LogID, TechID, ClientID, SiteID, LogTime, Type)
VALUES (".$count.", ".$TechID.", ".$ClientID.", ".$SiteID.", ".$LogTime.", ".$Type.")";
mysql_query($query);
}
}
$LogTime = date('Y/m/d H:i', mktime($_GET['Hour'], …如果我有一组嵌套的DOM元素,例如ul > li > ul > li我自己使用选择器li,那么做Sizzle还是document.querySelectorAll定义元素返回的顺序？
可能返回的订单包括"最顶层的第一个","叶节点优先",或者只是"按文档顺序",但我从未见过任何记下来指定哪个.
我想创建一个byte[]. 当我尝试：
byte[] data = new byte[10];
这是 的数组byte而不是 的数组byte[]。谢谢