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MySQL: @variable vs. variable. What's the difference?
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MySQL has a concept of user-defined variables.
They are loosely typed variables that may be initialized somewhere in a session and keep their value until the session ends.
They are prepended with an @ sign, like this: @var
Yo...
How to change the default collation of a table?
... in your answer considering how many views this gets. See here https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-utf8.html and here What is the difference between utf8mb4 and utf8 charsets in MySQL? – Paulpro Mar 12 at 17:46
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“where 1=1” statement [duplicate]
I saw some people use a statement to query a table in a MySQL database like the following:
10 Answers
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How to do a batch insert in MySQL
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From the MySQL manual
INSERT statements that use VALUES
syntax can insert multiple rows. To do
this, include multiple lists of column
values, each enclosed within
parentheses and separated by commas.
Example:
INSERT IN...
How do I insert NULL values using PDO?
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I had trouble with PDO::PARAM_NULL on MySql 5.1.53, but PDO::PARAM_INT with a null value worked great.
– Will Shaver
Dec 5 '11 at 19:33
2
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Doctrine - How to print out the real sql, not just the prepared statement?
...You can check the query executed by your app if you log all the queries in mysql:
http://dev.mysql.com/doc/refman/5.1/en/query-log.html
there will be more queries not only the one that you are looking for but you can grep for it.
but usually ->getSql(); works
Edit:
to view all the mysql quer...
Nginx serves .php files as downloads, instead of executing them
...ttps://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04 but when I try to run some .php file it's just downloading it...
for example... http://5.101.99.123/info.php it's working but... If I go to the main http://5.101.99.123 it's downloadi...
c/c++如何判断指针无效？如NULL,0xcccccccc,0xfeeefeee,野指针等 - C/C++ -...
c/c++如何判断指针无效？如NULL,0xcccccccc,0xfeeefeee,野指针等c c++如何判断指针无效？不仅仅是NULL的判断，有时由于指针释放没有赋NULL，指针会变成野指针或诸如0xcccccccc,0xfeeefeee形式的无效指针，...c/c++如何判断指针无效？不仅仅是N...
Windows下如何调试NPAPI Plugins - 更多技术 - 清泛网 - 专注C/C++及内核技术
Windows下如何调试NPAPI Plugins关于NPAPI的介绍及开发方法请参考“开发”栏目下相关博文，这里主要讲述一下如何调试NPAPI Plugins，环境为Win7 + VS 2008。一、如何查看Plugins是否加载成功
Firefox和Chrome在浏览器地址栏输入 about:plugins，...
iOS开发如何提高 - 更多技术 - 清泛网 - 专注C/C++及内核技术
iOS开发如何提高许多人在博客和微信上咨询我iOS开发如何提高，经过一番思考之后，我能想到如下一些提高的办法，我个人也是通过这些方法来提高的。阅读博客...许多人在博客和微信上咨询我iOS开发如何提高，经过一番思考之...