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Are nested transactions allowed in MySQL?
Does MySQL allow the use of nested transactions?
2 Answers
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PDO MySQL扩展模块 检测通不过的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
PDO MySQL扩展模块 检测通不过的解决方法php.in中下面两行已经放开注释：extension=pdo.soextension=pdo_mysql.soPDO检测仍然通不过。终极解决方案：php编译时加上如下参数，重新编...php.in中下面两行已经放开注释：
extension=pdo.so
extension=pdo...
Commonly accepted best practices around code organization in JavaScript [closed]
...jar) to your classpath
Download WysiHat and copy "vendor" directory to the root of your JavaScript project
Download JSLint for Rhino and put it inside the "vendor" directory
Now create a file named "Rakefile" in the root directory of the JavaScript project and add the following content to it:
req...
How can I modify the size of column in a MySQL table?
... MODIFY command can do this more concisely.
Re the MEDIUMTEXT thing: a MySQL row can be only 65535 bytes (not counting BLOB/TEXT columns). If you try to change a column to be too large, making the total size of the row 65536 or greater, you may get an error. If you try to declare a column of V...
windows异常处理 __try __except - C/C++ - 清泛网 - 专注C/C++及内核技术
...进入到__except模块中运行异常处理代码
try-except的关键是如何在__except模块中获得异常错误的相关信息.
Windows提供了两个API函数来获取异常信息：
LPEXCEPTION_POINTERS GetExceptionInformation(VOID); //取得异常相关信息
DWORD GetExceptionCode(VOID...
Insert into a MySQL table or update if exists
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Check out REPLACE
http://dev.mysql.com/doc/refman/5.0/en/replace.html
REPLACE into table (id, name, age) values(1, "A", 19)
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Does SQLAlchemy have an equivalent of Django's get_or_create?
...ote that begin_nested automatically triggers a flush.
Note that if using MySQL, the transaction isolation level must be set to READ COMMITTED rather than REPEATABLE READ for this to work. Django's get_or_create (and here) uses the same stratagem, see also the Django documentation.
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usr/bin/ld: cannot find -l
...ose mode.
For example, I encountered this issue while trying to compile MySQL with ZLIB support. I was receiving an error like this during compilation:
/usr/bin/ld: cannot find -lzlib
I did some Googl'ing and kept coming across different issues of the same kind where people would say to make ...
从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
从Code Review 谈如何做技术这两天，在微博上表达了一下Code Review的重要性。因为翻看了阿里内部的Review Board上的记录，从上面发现Code Review做得好的是一些比...这两天，在微博上表达了一下Code Review的重要性。因为翻看了阿里内部...
MySQL foreign key constraints, cascade delete
... When creating the tables, you need to specify InnoDB or another MySQL engine that's capable of CASCADE operations. Otherwise the MySQL default, MyISAM, will be used and MyISAM does not support CASCADE operations. To do this, just add ENGINE InnoDB before the last ;.
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