大约有 40,000 项符合查询结果（耗时：0.0571秒） [XML]
ALTER DATABASE failed because a lock could not be placed on database
...vide any explanation as to why a connection would not be terminated by the command? The only reason I can think would be that it is still in the process of rolling back or it is a set single_user attempt that is still pending.
– Martin Smith
Jan 12 '11 at 19:54...
Easiest way to read from and write to files
...e excerpt:
// Create a file to write to.
string createText = "Hello and Welcome" + Environment.NewLine;
File.WriteAllText(path, createText);
...
// Open the file to read from.
string readText = File.ReadAllText(path);
sha...
How do I escape a single quote in SQL Server?
... If you're using an ORM it will do it for you. If you're building your SQL commands manually you'll want to use the language's "prepared statements" functionality. If you're doing it in Management Studio then you'll have to do the replace.
– Cᴏʀʏ
Feb 15 '14...
How to enable MySQL Query Log?
... enable it from MySQL console
SET general_log = 1;
See http://dev.mysql.com/doc/refman/5.1/en/query-log.html
For mysql 5.1.29+
With mysql 5.1.29+ , the log option is deprecated. To specify the logfile and enable logging, use this in my.cnf in the [mysqld] section:
general_log_file = /path/to/q...
Max return value if empty query
...
int maxShoeSize = Workers.Where(x => x.CompanyId == 8)
.Select(x => x.ShoeSize)
.DefaultIfEmpty(0)
.Max();
The zero in DefaultIfEmpty is not necessary.
...
Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
... well that's half an hour spent unproductively that would never come back. tnx.
– Iman Akbari
Aug 5 '16 at 20:00
2
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Convert a Python list with strings all to lowercase or uppercase
...
It can be done with list comprehensions. These basically take the form of [function-of-item for item in some-list]. For example, to create a new list where all the items are lower-cased (or upper-cased in the second snippet), you would use:
>>...
Cache an HTTP 'Get' service response in AngularJS?
...self is a service that can be used across multiple controllers and angular components. It can be used as a generic api service to cache all your $http's into a single service obj rather than having different service objects for each one of them.
– Nirav Gandhi
...
Git for Windows - The Program can't start because libiconv2.dll is missing
When I attempt to run certain commands (like git push, for example) from a git Bash on Windows 7 (64bit) I get the error:
2...
Assign output of os.system to a variable and prevent it from being displayed on the screen [duplicat
I want to assign the output of a command I run using os.system to a variable and prevent it from being output to the screen. But, in the below code ,the output is sent to the screen and the value printed for var is 0, which I guess signifies whether the command ran successfully or not. Is there ...