vertica是用啥语言写的

Posted 2023-03-27

参考技术A vertica是使用传统的SQL语言。Vertica数据库更倾向于使用传统的SQL语言，处理结构化的数据，最近几个版本的Vertica也引入了Hadoop接口，使之具备了一定的非结构化数据。

c语言本身是开源的吗，c语言是用啥写的？谢谢大家了

　C语言是一个由ISO组织中的ANSI制定的标准，任何个人或者组织都可以根据这个标准将其实现。现今，世界上有许多不同的C语言实现，比较著名的有：GCC、Watcom、MS C等，其中前两者是开源的，后者是闭源的。下面粘贴几个老外的回答（原回答链接）。

The C language is not a piece of software but a defined standard, so one wouldn't say that it's open-source, but rather that it's an open standard.

There are a gazillion different compilers for C however, and many of those are indeed open-source. The most notable example is GCC's C compiler, which is all under the GNU General Public License (GPL), an open-source license.

There are more options. Watcom is open-source, for instance. There is no shortage of open-source C compilers, but without a doubt the most widespread one, at least in the non-Windows world, is GCC.

For Windows, your best bet is probably Watcom or GCC by using Cygwin or MinGW.

C is a standard which specifies how C compilers should generate programs.

C itself doesn't have any source code, just like a musical note doesn't have any plastic.

Some C compilers, such as GCC, are open source.

C is just a language, and a standardised one at that, too. It pretty much is the compiler that "does all the work". Different compilers did have different dialects; before the the C99 ANSI standard, you had things like Borland C and other competing compilers, that implemented the C language in their own fantastic ways.

stdlib is just an agreed-upon collection of standard libraries that are required to be present in any ANSI C implementation.

       关于C++开源与否：

　　与C语言类似，C++也是由ISO/ANSI制定的一个标准，所谓的“官方”并未给出确切的实现，任何组织与个人都可以根据标准自己开发一个C++编译器出来。出名的C++编译器有：GCC/G++、libc/libc++、clang（++）、 Visual studio和MS´ runtime等。也把老外的几个回答贴出来（原回答链接）。

C++ itself is only a description what the language should be,

without a definite implementation.

Anyone can make his own implementations (compiler etc, runtime library, ...)

and call it C++ if it fits to the description.

http://www.open-std.org/jtc1/sc22/wg21/

And if a implementation is open source depends on the creator.

Examples of implementation (parts):

GCC/G++, libc/libc++, clang (++ too), Visual studio and MS´ runtime...

C++ is developed by an ISO standard committee. There's also a C++ foundation that runs a web site you might want to read.

C++ itself is a language, not a specific implementation, so there's no source code available for the standard/language itself.

Some C++ implementations are open source (e.g., Gnu and Clang).

1. C++ is a code standard defined by the International Organization of Standardization (ISO). There are many different implementations of the language, but they all tend to conform to C++11. Unlike Linux or Qt, C++ is just a standard, and to use any code written in the language you'll need a compiler. The major compilers (list from Wikipedia) are LLVM Clang, GCC, Microsoft Visual C++, and the Intel C++ Compiler.

2. C++ revisions are dealt with by ISO, and are influenced primarily by the maintainers of the above four implementations.

3. Clang and GCC are both open-source, I'm sure if you poke around you can find other conforming compilers but those are the two most used.

       总之，跟Java、Python和PHP这样所谓的开源语言不同，C语言与C++没有官方提供的各自确切的实现代码（库），ISO/ANSI仅仅提供了C和C++的标准。

        这些都是我从自个儿博客摘抄来的，也不见得有人看得到。

参考技术A 本身肯定是的，C语言本身属于高级语言，是用C语言写的追问

c语言是用c语言本身写的？

参考技术B C语言就是一种高级编程语言啊，给人用的语言又不是软件怎么叫开源。 参考技术C 这个问题。。。我都不想说愚蠢。。。。

问你个问题：我们是说汉语的，那么请问，英语是开源的么？英语是用什么写的？？

什么叫做语言？？
一系列被 赋予了 某种特定含义 的 规则符号，叫做某种语言的 文字；
一系列对应的 发音，叫做某种语言的 发音；
文字和读音合起来才是一种完整的语言。

比如，“苹果”这两个汉字，它代表这一种水果，而不是小狗、小猫。

同样，C语言也是这样，
C语言本身定义了很多英语单词作为关键字，像for这个单词，在C语言中引导着循环；
int 这个符号代表整型数据结构；
这些是语言本身定义的。
话再说回来——以上这些规则，就定义了一门语言。

任何编程语言本身都不是源代码，而是规则。

所谓开源，只能说源代码是开源的，C语言能够写出来很多函数库，有些库是开源的，而有些不是。 参考技术D C语言本身不是开源的。这个从C调用诸多的.dll库你就可以知道了。
C语言是一种计算机程序设计语言，它既具有高级语言的特点，又具有汇编语言的特点。
汇编是机器可以直接识别的语言
C还是蛮伟大的,JAVA的底层全是C写的