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What is the difference between a port and a socket?
...eferences
TCP-IP Illustrated Volume 1 The Protocols, W. Richard Stevens, 1994 Addison Wesley
RFC793, Information Sciences Institute, University of Southern California for DARPA
RFC147, The Definition of a Socket, Joel M. Winett, Lincoln Laboratory
...
What is in your Mathematica tool bag? [closed]
...at style of hack for "wrapping" a
built-in function was invented around 1994 by Robby Villegas and I,
ironically for the function Message, in a package called ErrorHelp
that I wrote for the Mathematica Journal back then. It has been used
many times, by many people, since then. It's a bit...
How do I add a foreign key to an existing SQLite table?
...un a query like the following: SELECT type, sql FROM
sqlite_master WHERE tbl_name='X'.
Use CREATE TABLE to construct a new table "new_X" that is in the
desired revised format of table X. Make sure that the name "new_X"
does not collide with any existing table name, of course.
Transfer cont...
TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
其它拥塞控制算法简介
TCP Vegas 拥塞控制算法
这个算法1994年被提出，它主要对TCP Reno 做了些修改。这个算法通过对RTT的非常重的监控来计算一个基准RTT。然后通过这个基准RTT来估计当前的网络实际带宽，如果实际带宽比我们...
Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...that it's 26(2query) against 9.2(1 query) SELECT SQL_CALC_FOUND_ROWS tblA.*, tblB.id AS 'b_id', tblB.city AS 'b_city', tblC.id AS 'c_id', tblC.type AS 'c_type', tblD.id AS 'd_id', tblD.extype AS 'd_extype', tblY.id AS 'y_id', tblY.ydt AS y_ydt ...
How to do a batch insert in MySQL
...sed within
parentheses and separated by commas.
Example:
INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);
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“’” showing on page instead of “ ' ”
...om this article):
CREATE DATABASE db_name CHARACTER SET utf8;
CREATE TABLE tbl_name (...) CHARACTER SET utf8;
If your table is however already UTF-8, then you need to take a step back. Who or what put the data there. That's where the problem is. One example would be HTML form submitted values which...
SCOPE_IDENTITY() for GUIDs?
...declare @id uniqueidentifier
set @id = NEWID()
INSERT INTO [dbo].[tbl1]
([id])
VALUES
(@id)
select @id
but clustered index problem are there in GUID . read this one tooNEWSEQUENTIALID() .These are my ideas ,think before use GUID as primary Key . :)
...
SQL to determine minimum sequential days of access?
... AND uh1.UserId = uh2.UserId
GROUP BY uh1.Id, uh1.UserId
) as Tbl
WHERE Conseq >= @days
EDIT:
[Jeff Atwood] This is a great fast solution and deserves to be accepted, but Rob Farley's solution is also excellent and arguably even faster (!). Please check it out too!
...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...