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+    "editor.tokenColorCustomizations": {
+        "textMateRules": [
+            {
+                "scope": "kunpeng.func",
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+                    "foreground": "#28a745"
+                }
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+                "settings": {
+                    "foreground": "#28a745"
+                }
+            }
+        ]
+    }
+}
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diff --git "a/content/zh/post/Frank/openGauss MogDB\350\260\203\347\224\250C FUNCTION.md" "b/content/zh/post/Frank/openGauss MogDB\350\260\203\347\224\250C FUNCTION.md"
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+# openGauss/MogDB调用C FUNCTION
+# 摘要
+> 之前写过一篇关于[postgresql自定义函数实现，通过contrib模块进行扩展](https://blog.csdn.net/xk_xx/article/details/123011397 "postgresql自定义函数实现，通过contrib模块进行扩展")的帖子，今天和恩墨工程师进行了一些交流，在MogDB中也可以实现同样的功能，原以为需要完整的openGauss的源码才能完成，但在恩墨工程师的指点下，了解到，通过既有官网版本的安装包就可以进行插件开发。而且，使用postgres的C FUNCTION要比开发插件更加容易些。也感谢恩墨专家提供的线索和思路:+1: :+1:
+
+# 环境准备
+* 安装MogDB
+参考官方文档，写的已经很详细了。
+* 服务器环境
+本地虚拟机 centos 7.9
+
+***注意：尽量进入******omm******用户下进行编译，可以避免一些不必要的环境问题***
+
+# 代码
+* C代码
+基本与postgres插件开发一样，关键是4,5,6三行。
+
+```cpp
+#include "postgres.h"
+#include "fmgr.h"
+
+PG_MODULE_MAGIC;
+extern "C" Datum add_ab(PG_FUNCTION_ARGS);
+PG_FUNCTION_INFO_V1(add_ab);
+
+Datum
+add_ab(PG_FUNCTION_ARGS)
+{
+          int32 arg_a = PG_GETARG_INT32(0);
+          int32 arg_b = PG_GETARG_INT32(1);
+
+          PG_RETURN_INT32(arg_a + arg_b);
+}
+```
+* CMakeLists.txt
+
+```makefile
+cmake_minimum_required (VERSION 2.8)
+
+project (gs_plug)
+set(CMAKE_CXX_FLAGS "-Wall -std=c++11 -Wall")
+set(CMAKE_CXX_FLAGS_DEBUG "-g3")
+set(CMAKE_CXX_FLAGS_RELEASE "-O2")
+set(CMAKE_BUILD_TYPE Debug)
+
+set(MOG_INCLUDE /opt/mogdb/app/include/postgresql/server)
+set(MOG_LIBPATH /opt/mogdb/app/lib/postgresql/proc_srclib)
+include_directories(${MOG_INCLUDE})
+
+aux_source_directory(. DIR_SRCS)
+add_library (${PROJECT_NAME} SHARED ${DIR_SRCS})
+
+install(TARGETS ${PROJECT_NAME} DESTINATION ${MOG_LIBPATH})
+```
+***要点1：获取包含头文件的目录***
+
+```Plain Text
+[omm@vmpc funcs]$ pg_config --includedir
+/opt/mogdb/app/include
+```
+所需头文件路径：\`pg\_config --includedir\`/postgresql/server
+
+***要点1：c函数安装路径***
+
+```Plain Text
+[omm@vmpc funcs]$ pg_config --pkglibdir
+/opt/mogdb/app/lib/postgresql
+```
+安装路径：\`pg\_config --pkglibdir\`/proc\_srclib/
+
+
+
+# 编译 & 安装
+```Plain Text
+[omm@vmpc funcs]$ mkdir build
+[omm@vmpc funcs]$ cd build/
+[omm@vmpc build]$ cmake ../
+CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
+  Compatibility with CMake < 2.8.12 will be removed from a future version of
+  CMake.
+
+  Update the VERSION argument <min> value or use a ...<max> suffix to tell
+  CMake that the project does not need compatibility with older versions.
+
+
+-- The C compiler identification is GNU 4.8.5
+-- The CXX compiler identification is GNU 4.8.5
+-- Detecting C compiler ABI info
+-- Detecting C compiler ABI info - done
+-- Check for working C compiler: /bin/cc - skipped
+-- Detecting C compile features
+-- Detecting C compile features - done
+-- Detecting CXX compiler ABI info
+-- Detecting CXX compiler ABI info - done
+-- Check for working CXX compiler: /bin/c++ - skipped
+-- Detecting CXX compile features
+-- Detecting CXX compile features - done
+-- Configuring done
+-- Generating done
+-- Build files have been written to: /opt/mogdb/funcs/build
+[omm@vmpc build]$ make
+[ 50%] Building CXX object CMakeFiles/gs_plug.dir/testfunc.cpp.o
+[100%] Linking CXX shared library libgs_plug.so
+[100%] Built target gs_plug
+[omm@vmpc build]$ make install
+Consolidate compiler generated dependencies of target gs_plug
+[100%] Built target gs_plug
+Install the project...
+-- Install configuration: "Debug"
+-- Installing: /opt/mogdb/app/lib/proc_srclib/libgs_plug.so
+```
+**依次执行如下命令**
+
+```Plain Text
+mkdir build
+cd build
+cmake ../
+make
+make install
+```
+**确认安装**
+
+```Plain Text
+[omm@vmpc build]$ ll /opt/mogdb/app/lib/proc_srclib/libgs_plug.so
+-rwxr-xr-x. 1 omm dbgrp 215696 Apr  2 00:17 /opt/mogdb/app/lib/proc_srclib/libgs_plug.so
+
+```
+# 验证
+* 链接mogdb
+
+```Plain Text
+[omm@vmpc ~]$ pgcli -p 26000 -d postgres
+Server: PostgreSQL 9.2.4
+Version: 3.4.1
+Home: http://pgcli.com
+postgres>
+```
+* 创建C FUNCTION
+
+```sql
+postgres> CREATE FUNCTION add_ab(a int ,b int ) RETURNS integer
+ AS 'testfunc.so', 'add_ab'
+ LANGUAGE C STRICT;
+CREATE FUNCTION
+Time: 0.039s
+```
+* 查看函数
+
+![image](images/8f11c785-f027-47b5-a1ba-726edaacb2f2.png)
+
+* 调用函数
+
+```sql
+postgres> select add_ab(a := 4, b := 2);
++--------+
+| add_ab |
+|--------|
+| 6      |
++--------+
+SELECT 1
+Time: 0.033s
+postgres>
+
+```
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