大约有 42,000 项符合查询结果（耗时：0.0208秒） [XML]
LINQ to read XML
...=>
new string[]{ l.Attribute("name").Value }
.Union(
l.Descendants("level2")
.Select(l2=>" " + l2.Attribute("name").Value)
)
);
foreach (var lv in lvs)
{
result.AppendLine(lv);
...
Drop all tables whose names begin with a certain string
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MYSQL: SELECT concat('DROP TABLE ',TABLE_NAME,";") as data FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME LIKE '[prefix]%' --- for those who like me found this thread
– Andre
Nov 6 '12...
When would anyone use a union? Is it a remnant from the C-only days?
I have learned but don't really get unions. Every C or C++ text I go through introduces them (sometimes in passing), but they tend to give very few practical examples of why or where to use them. When would unions be useful in a modern (or even legacy) case? My only two guesses would be programming ...
Most Pythonic way to provide global configuration variables in config.py? [closed]
...
How about just using the built-in types like this:
config = {
"mysql": {
"user": "root",
"pass": "secret",
"tables": {
"users": "tb_users"
}
# etc
}
}
You'd access the values as follows:
config["mysql"]["tables"]["users"]
If ...
What is the difference between UNION and UNION ALL?
What is the difference between UNION and UNION ALL ?
26 Answers
26
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Apache .htaccess 禁止访问某目录方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要利用.htaccess对某个目录下的文档设定访问用户和对应的密码，首先要做的是生成一个.htpasswd的文本文档，使用
htpasswd -c d:/passwords wwq
输入用户密码即可生成.htpasswd的文本文档
在.htaccess文件中加入：
AuthType Basic
AuthName "Restric...
Explicitly set Id with Doctrine when using “AUTO” strategy
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Although your solution work fine with MySQL, I failed to make it work with PostgreSQL as It's sequence based.
I've to add this line to make it work perfectly :
$metadata->setIdGenerator(new \Doctrine\ORM\Id\AssignedGenerator());
Best regards,
...
I can not find my.cnf on my windows computer [duplicate]
...ortcut for 'run'), type services.msc, Enter
You should find an entry like 'MySQL56', right click on it, select properties
You should see something like "D:/Program Files/MySQL/MySQL Server 5.6/bin\mysqld" --defaults-file="D:\ProgramData\MySQL\MySQL Server 5.6\my.ini" MySQL56
Full answer here:
http...
PDO support for multiple queries (PDO_MYSQL, PDO_MYSQLND)
...n one statement. I've been Googleing and found few posts talking about PDO_MYSQL and PDO_MYSQLND.
7 Answers
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Difference between a Structure and a Union
Is there any good example to give the difference between a struct and a union ?
Basically I know that struct uses all the memory of its member and union uses the largest members memory space. Is there any other OS level difference?
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