大约有 20,175 项符合查询结果（耗时：0.0214秒） [XML]
ALTER TABLE, set null in not null column, PostgreSQL 9.1
I have a table with not null column, How to set a null value in this column as default?
4 Answers
...
R data formats: RData, Rda, Rds etc
What are the main differences between .RData, .Rda and .Rds files?
2 Answers
2
...
is there any way to force copy? copy without overwrite prompt, using windows?
I want to write a list of windows commands(it's a long list) where it does all these magical things for me, but whenever I use copy, it stops to ask fro overwrite prompt. When I type yes, it overwrites the old file then just stops there.
...
What is Pseudo TTY-Allocation? (SSH and Github)
I was trying to setup an SSH connection with Github following this tutorial: https://help.github.com/articles/testing-your-ssh-connection/
...
Difference between java.exe and javaw.exe
Recently I noted that some applications are running on javaw (not in java ). What is the difference between them and how can I run my Swing application on javaw ?
...
How can I join multiple SQL tables using the IDs?
I have 4 different tables that I want to join. The tables are structured with columns as follows:
4 Answers
...
New Line on PHP CLI
I have a php CLI script and cannot get the output to break on new lines. I do
4 Answers
...
Will writeToFile:atomically: overwrite data?
Really simple question but it doesn't seem to be clear in Apple's docs.
2 Answers
2
...
generating GUID without hyphen
I am generating a GUID using the following statement in my code
2 Answers
2
...
Use curly braces to initialize a Set in Python
I'm learning python, and I have a novice question about initializing sets. Through testing, I've discovered that a set can be initialized like so:
...