Table of Contents
PostgreSQL allows user-defined functions to be written in other languages besides SQL and C. These other languages are generically called procedural languages (PLs). For a function written in a procedural language, the database server has no built-in knowledge about how to interpret the function's source text. Instead, the task is passed to a special handler that knows the details of the language. The handler could either do all the work of parsing, syntax analysis, execution, etc. itself, or it could serve as “glue” between PostgreSQL and an existing implementation of a programming language. The handler itself is a C language function compiled into a shared object and loaded on demand, just like any other C function.
There are currently four procedural languages available in the standard PostgreSQL distribution: PL/pgSQL (Chapter 41), PL/Tcl (Chapter 42), PL/Perl (Chapter 43), and PL/Python (Chapter 44). There are additional procedural languages available that are not included in the core distribution. Appendix H has information about finding them. In addition other languages can be defined by users; the basics of developing a new procedural language are covered in Chapter 56.
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.
| 血糖高吃什么肉最好 | 喜欢蓝色的女人是什么性格 | 例假期间吃什么食物好 | 古代广东叫什么 | 痱子长什么样子图片 |
| 炎症吃什么消炎药 | diy什么意思 | 大白条是什么鱼 | 梦见老牛是什么意思 | 阴历7月22什么日子 |
| 梦到兔子是什么征兆 | 胃镜预约挂什么科 | 元气大伤什么意思 | 西安属于什么省 | 男人到了什么年龄就性功能下降 |
| 7月24是什么星座 | 浮想联翩什么意思 | 惊悸的意思是什么 | 天蝎座是什么星座 | 圆脸女生适合什么发型 |
| 菠菜不能与什么一起吃hcv8jop0ns3r.cn | 梦见手抓屎是什么意思bjhyzcsm.com | 失眠吃什么药最有效hcv7jop9ns8r.cn | 吃什么消炎药可以喝酒hcv9jop8ns1r.cn | 奥美拉唑主要治什么hcv9jop2ns8r.cn |
| 黑天天的学名叫什么hcv8jop5ns5r.cn | 事急从权是什么意思hcv8jop4ns3r.cn | 军字五行属什么hcv8jop4ns0r.cn | 忌入宅是什么意思travellingsim.com | 阿托伐他汀钙片有什么副作用xjhesheng.com |
| 标准的青色是什么颜色hcv8jop5ns5r.cn | 猪血炒什么好吃hcv8jop2ns3r.cn | 世界上最大的湖是什么湖hcv9jop4ns8r.cn | 弦是什么hcv9jop3ns5r.cn | 血糖高吃什么水果降糖hcv8jop0ns2r.cn |
| 谷氨酰基转移酶高是什么原因hcv9jop5ns4r.cn | 大便一粒粒的是什么原因zsyouku.com | 为什么同房会痛hcv7jop5ns1r.cn | 六味地黄丸什么牌子的好hcv9jop2ns9r.cn | 迪赛尼斯属于什么档次jinxinzhichuang.com |