大约有 7,000 项符合查询结果(耗时:0.0229秒) [XML]

https://stackoverflow.com/ques... 

Avoiding SQL injection without parameters

...ecommend one for .NET? Maybe more than one depending on the DB: SQLServer, MySQL, PostgreSQL? I've looked for SQL-sanitizer but without much luck, so hsve been forced to implement my own, as best I can (which is no doubt far from foolproof). – PSU Nov 29 '19 at...
https://stackoverflow.com/ques... 

MySQL DISTINCT on a GROUP_CONCAT()

....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f3083499%2fmysql-distinct-on-a-group-concat%23new-answer', 'question_page'); } ); Post as a guest ...
https://stackoverflow.com/ques... 

Efficient SQL test query or validation query that will work across all (or most) databases

...it of research along with help from some of the answers here: SELECT 1 H2 MySQL Microsoft SQL Server (according to NimChimpsky) PostgreSQL SQLite SELECT 1 FROM DUAL Oracle SELECT 1 FROM any_existing_table WHERE 1=0 or SELECT 1 FROM INFORMATION_SCHEMA.SYSTEM_USERS or CALL NOW() HSQLDB (tested ...
https://stackoverflow.com/ques... 

How do you version your database schema? [closed]

...ion : http://www.nextep-softwares.com/wiki It currently supports Oracle, MySql and PostgreSql and is in java so the product runs on windows, linux and mac. share | improve this answer | ...
https://stackoverflow.com/ques... 

SQL update from one Table to another based on a ID match

...INNER JOIN RetrieveAccountNumber RAN ON SI.LeadID = RAN.LeadID; MySQL and MariaDB UPDATE Sales_Import SI, RetrieveAccountNumber RAN SET SI.AccountNumber = RAN.AccountNumber WHERE SI.LeadID = RAN.LeadID; ...
https://stackoverflow.com/ques... 

PHP json_encode encoding numbers as strings

...s with PDO and mssql ; but, if I remember correctly, this also happens for MySQL in PHP < 5.3, when the new mysqlnd driver was not yet existing) ;; to check what your data look like, you can use var_dump, which outputs the types of each part of the data. – Pascal MARTIN ...
https://www.tsingfun.com/it/cpp/1871.html 

Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术

...io的简单使用(Timer,Thread,Io_service类)2. 同步Timer本章介绍asio如何在定时器上进行阻塞等待(blocking wait).实现,我们包含必要的头文件.所有的asio类可以简单的通过include "...目录: 1. 同步Timer 2. 异步Timer 3. 回调函数的参数 4. 成员函...
https://stackoverflow.com/ques... 

Increment a database field by 1

With MySQL, if I have a field, of say logins, how would I go about updating that field by 1 within a sql command? 5 Answers...
https://www.tsingfun.com/ilife/tech/1448.html 

大数据能否拯救中国足球? - 资讯 - 清泛网 - 专注C/C++及内核技术

...难。 未来大数据在足球相关产业中的应用前景到底如何?从球队、球员的日常训练到整个职业联赛球员大数据库的建立,从可穿戴设备到体育赛事转播的制作包装,大数据可介入的发力点又在哪里? 事实上,随着80亿中超(...
https://stackoverflow.com/ques... 

How does “do something OR DIE()” work in PHP?

I'm writing a php app to access a MySQL database, and on a tutorial, it says something of the form 4 Answers ...