大约有 19,000 项符合查询结果（耗时：0.0192秒） [XML]
Best way to test if a row exists in a MySQL table
I'm trying to find out if a row exists in a table. Using MySQL, is it better to do a query like this:
12 Answers
...
PHP code to convert a MySQL query to CSV [closed]
What is the most efficient way to convert a MySQL query to CSV in PHP please?
6 Answers
...
Can't install Ruby under Lion with RVM – GCC issues
...e two lines:
http://stackoverflow.com/questions/8000145/ruby-rvm-llvm-and-mysql
bash-3.2$ rvm get head
bash-3.2$ CC=/usr/bin/gcc-4.2 rvm install 1.9.3 --enable-shared
Before that I had tried every stackoverflow article on Ruby and Lion so doing these may have done some setup that helped the abov...
Types in MySQL: BigInt(20) vs Int(20)
...
See http://dev.mysql.com/doc/refman/8.0/en/numeric-types.html
INT is a four-byte signed integer.
BIGINT is an eight-byte signed integer.
They each accept no more and no fewer values than can be stored in their respective number of by...
【解决】App Inventor 2 如何下载/保存网络图片？ - App Inventor 2 中文网...
首先，需要使用“Web客户端”组件，需要和网络url进行数据交互的场景就要考虑使用它。设置好网络图片的url，然后执行Get方法即可，代码如下：其中，特别要注意的是保存相应信息属性设置为真，这样才能将目标网络图片保存...
Remote connect to clearDB heroku database
How can i perform a remote connect to ClearDB MySQL database on heroku using for example MySQL Query Browser. Where to get url, port, login and password?
...
Reference - What does this error mean in PHP?
...
Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given
First and foremost:
Please, don't use mysql_* functions in new code. They are no longer maintained and are officially deprecated. See the red box? Lea...
Set value to NULL in MySQL
...
You're probably quoting 'NULL'. NULL is a reserved word in MySQL, and can be inserted/updated without quotes:
INSERT INTO user (name, something_optional) VALUES ("Joe", NULL);
UPDATE user SET something_optional = NULL;
...
App Inventor 2 中文网 · 项目指南
... 学习目标：本地存储之“微数据库”组件的使用，如何持久化App数据。 开始学习 二分算法（BinarySearch） ...
How do I get the last inserted ID of a MySQL table in PHP?
...
If you're using PDO, use PDO::lastInsertId.
If you're using Mysqli, use mysqli::$insert_id.
If you're still using Mysql:
Please, don't use mysql_* functions in new code. They are no longer maintained and are officially deprecated. See the red box? Learn about prepared statements ...