大约有 44,000 项符合查询结果（耗时：0.0578秒） [XML]
ssh “permissions are too open” error
...m the manpage (man ssh)
~/.ssh/id_rsa
Contains the private key for authentication. These files contain sensitive
data and should be readable by the user but not
accessible by others (read/write/execute). ssh will simply ignore a private
key file if it is ...
How to create composite primary key in SQL Server 2008
... Not quite true. Both create "named constraints". It's just that with the former, you don't control the naming. But once created, you can look up the name that was used and delete/update by name...
– Auspex
Jul 3 '17 at 15:53
...
How to get CSS to select ID that begins with a string (not in Javascript)?
... $ mean "start of string" and "end of string" respectively.
See the specs for full information.
share
|
improve this answer
|
follow
|
...
What are best practices for multi-language database design? [closed]
... the best way to create multi-language database? To create localized table for every table is making design and querying complex, in other case to add column for each language is simple but not dynamic, please help me to understand what is the best choose for enterprise applications
...
MySQL foreign key constraints, cascade delete
I want to use foreign keys to keep the integrity and avoid orphans (I already use innoDB).
3 Answers
...
Check if table exists in SQL Server
...
For queries like this it is always best to use an INFORMATION_SCHEMA view. These views are (mostly) standard across many different databases and rarely change from version to version.
To check if a table exists use:
IF (EX...
JavaScript and Threads
...
See http://caniuse.com/#search=worker for the most up-to-date support info.
The following was the state of support circa 2009.
The words you want to google for are JavaScript Worker Threads
Apart from from Gears there's nothing available right now, but there...
How to delete from multiple tables in MySQL?
...ND p.pet_id = :pet_id
...to delete only from pets_activities
See this.
For single table deletes, yet with referential integrity, there are other ways of doing with EXISTS, NOT EXISTS, IN, NOT IN and etc. But the one above where you specify from which tables to delete with an alias before the FR...
Why does Haskell's “do nothing” function, id, consume tons of memory?
...
We know the type of id,
id :: a -> a
And when we specialize this for id id, the left copy of id has type:
id :: (a -> a) -> (a -> a)
And then when you specialize this again for the leftmost id in id id id, you get:
id :: ((a -> a) -> (a -> a)) -> ((a -> a) ->...
SQL select join: is it possible to prefix all columns as 'prefix.*'?
...ssible situations here. First, you want to know if there is a SQL standard for this, that you can use in general regardless of the database. No, there is not. Second, you want to know with regard to a specific dbms product. Then you need to identify it. But I imagine the most likely answer is that y...