大约有 41,000 项符合查询结果(耗时:0.0461秒) [XML]

https://stackoverflow.com/ques... 

PHP how to get local IP of system

I need to get local IP of computer like 192.*.... Is this possible with PHP? 16 Answers ...
https://stackoverflow.com/ques... 

From inside of a Docker container, how do I connect to the localhost of the machine?

...g a port to the outside world, so its bound on localhost, not bound on the ip address of the machine. 30 Answers ...
https://stackoverflow.com/ques... 

How to round an average to 2 decimal places in PostgreSQL?

... round that takes a precision is only available for numeric. regress=> SELECT round( float8 '3.1415927', 2 ); ERROR: function round(double precision, integer) does not exist regress=> \df *round* List of functions Schema | Name | Result data type | Argument...
https://stackoverflow.com/ques... 

Boolean Field in Oracle

...ate the many Boolean-like flags that Oracle's data dictionary views use, selecting 'Y' for true and 'N' for false. However, to interact correctly with host environments, such as JDBC, OCCI, and other programming environments, it's better to select 0 for false and 1 for true so it can work ...
https://stackoverflow.com/ques... 

How to convert DateTime to VarChar

...yDateTime DATETIME SET @myDateTime = '2008-05-03' -- -- Convert string -- SELECT LEFT(CONVERT(VARCHAR, @myDateTime, 120), 10) share | improve this answer | follow ...
https://stackoverflow.com/ques... 

Generating random strings with T-SQL

...st varchar(8000) declare @step bigint = rand(@seed) * 2147483647; select @alpha = 'qwertyuiopasdfghjklzxcvbnm' , @digit = '1234567890' , @specials = '_@# ' select @first = @alpha + '_@'; set @seed = (rand((@seed+@step)%2147483647)*2147483647); select @length =...
https://stackoverflow.com/ques... 

What is the Difference Between read() and recv() , and Between send() and write()?

...). However, it didn't work when I tried to send binary data that included character 10. write() somewhere inserted character 13 before this. Changing it to send() with a flags parameter of 0 fixed that problem. read() could have the reverse problem if 13-10 are consecutive in the binary data, bu...
https://stackoverflow.com/ques... 

How to print VARCHAR(MAX) using Print Statement?

...ent. It works well in combination with the SQL Server Management Studio. SELECT CAST('<root><![CDATA[' + @MyLongString + ']]></root>' AS XML) You can click on the returned XML to expand it in the built-in XML viewer. There is a pretty generous client side limit on the displaye...
https://stackoverflow.com/ques... 

TCP: can two different sockets share a port?

...n is uniquely identified by the combination of client-side and server-side IP/Port pairs. Multiple connections on the same server can share the same server-side IP/Port pair as long as they are associated with different client-side IP/Port pairs, and the server would be able to handle as many clien...
https://stackoverflow.com/ques... 

New line in Sql Query

...-line-char/ DECLARE @NewLineChar AS CHAR(2) = CHAR(13) + CHAR(10) PRINT ('SELECT FirstLine AS FL ' + @NewLineChar + 'SELECT SecondLine AS SL') share | improve this answer | ...