{
 "cells": [
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "连接数据库\n",
    "============================== "
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "连接到SQL Server,并操作数据。"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "## 引用操作类库"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div><div></div><div></div><div><strong>Installed Packages</strong><ul><li><span>Microsoft.Dotnet.Interactive.SqlServer, 1.0.0-beta.23165.2</span></li></ul></div></div>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/plain": [
       "Loading extensions from `C:\\Users\\ruyu\\.nuget\\packages\\microsoft.dotnet.interactive.sqlserver\\1.0.0-beta.23165.2\\interactive-extensions\\dotnet\\Microsoft.DotNet.Interactive.SqlServer.dll`"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/html": [
       "<details><summary>Query Microsoft SQL Server databases.</summary>\r\n",
       "<p>This extension adds support for connecting to Microsoft SQL Server databases using the <code>#!connect mssql</code> magic command. For more information, run a cell using the <code>#!sql</code> magic command.</p>\r\n",
       "</details>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "#r \"nuget:Microsoft.Dotnet.Interactive.SqlServer,*-*\""
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "## 连接到SQL Server"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "### 数据库连接命令"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "#### 命令概述: 使用帮助参数"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "数据库连接命令为 `#!connect` 查看连接帮助 `#!connect -h`"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [],
   "source": [
    "#!connect -h"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "#### 连接到本机SQL Server"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "1. 建立连接"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "> 连接到本机SQL Server, 特别注意的是 --kernel-name 指定名称，后面的SQL操作均需要使用：sql-{{kernel-name}}的值\n",
    "> 比如 --kernel-name Demo, 则该SQL连接的kernel名称为 sql-Demo, 使用 #!sql-Demo 进行引用"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "Kernel added: #!sql-Demo"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "#!connect mssql \"server=.\\SQL2008;uid=sa;pwd=gly-bicijinlian;database=Study;Encrypt=True;TrustServerCertificate=True;\" --kernel-name Demo\n",
    "//重复执行会抛出错误，目前没有找到解决方法"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "2. 使用连接: 方式一"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "> 在右下角，切换 Kernel, 由 `csharp - C# Script` 换成  由--kernel-name指定值生成的 `sql-Demo - T-SQL`"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "dotnet_interactive": {
     "language": "sql-Demo"
    },
    "polyglot_notebook": {
     "kernelName": "sql-Demo"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(2 行受到影响)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/csv": [
       "Id,Name,Age,Address,School,Grade,Room\r\n",
       "1,王明明,5,五星小区21号301,太康一高,一年级,\r\n",
       "2,张三丰,9,,太康一高,一年级,\r\n"
      ],
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       "<table><thead><tr><td><span>Id</span></td><td><span>Name</span></td><td><span>Age</span></td><td><span>Address</span></td><td><span>School</span></td><td><span>Grade</span></td><td><span>Room</span></td></tr></thead><tbody><tr><td><div class=\"dni-plaintext\"><pre>1</pre></div></td><td>王明明</td><td><div class=\"dni-plaintext\"><pre>5</pre></div></td><td>五星小区21号301</td><td>太康一高</td><td>一年级</td><td></td></tr><tr><td><div class=\"dni-plaintext\"><pre>2</pre></div></td><td>张三丰</td><td><div class=\"dni-plaintext\"><pre>9</pre></div></td><td></td><td>太康一高</td><td>一年级</td><td></td></tr></tbody></table><style>\r\n",
       ".dni-code-hint {\r\n",
       "    font-style: italic;\r\n",
       "    overflow: hidden;\r\n",
       "    white-space: nowrap;\r\n",
       "}\r\n",
       ".dni-treeview {\r\n",
       "    white-space: nowrap;\r\n",
       "}\r\n",
       ".dni-treeview td {\r\n",
       "    vertical-align: top;\r\n",
       "    text-align: start;\r\n",
       "}\r\n",
       "details.dni-treeview {\r\n",
       "    padding-left: 1em;\r\n",
       "}\r\n",
       "table td {\r\n",
       "    text-align: start;\r\n",
       "}\r\n",
       "table tr { \r\n",
       "    vertical-align: top; \r\n",
       "    margin: 0em 0px;\r\n",
       "}\r\n",
       "table tr td pre \r\n",
       "{ \r\n",
       "    vertical-align: top !important; \r\n",
       "    margin: 0em 0px !important;\r\n",
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       "</style>"
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   ],
   "source": [
    "SELECT * from Student"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "2. 使用连接：方式二(推荐)"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "> 使用 `#!sql-Demo` ,后面直接写SQL语句，不用切换 kernel "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(2 行受到影响)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/csv": [
       "Id,Name,Age,Address,School,Grade,Room\r\n",
       "1,王明明,5,五星小区21号301,太康一高,一年级,\r\n",
       "2,张三丰,9,,太康一高,一年级,\r\n"
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       "<table><thead><tr><td><span>Id</span></td><td><span>Name</span></td><td><span>Age</span></td><td><span>Address</span></td><td><span>School</span></td><td><span>Grade</span></td><td><span>Room</span></td></tr></thead><tbody><tr><td><div class=\"dni-plaintext\"><pre>1</pre></div></td><td>王明明</td><td><div class=\"dni-plaintext\"><pre>5</pre></div></td><td>五星小区21号301</td><td>太康一高</td><td>一年级</td><td></td></tr><tr><td><div class=\"dni-plaintext\"><pre>2</pre></div></td><td>张三丰</td><td><div class=\"dni-plaintext\"><pre>9</pre></div></td><td></td><td>太康一高</td><td>一年级</td><td></td></tr></tbody></table><style>\r\n",
       ".dni-code-hint {\r\n",
       "    font-style: italic;\r\n",
       "    overflow: hidden;\r\n",
       "    white-space: nowrap;\r\n",
       "}\r\n",
       ".dni-treeview {\r\n",
       "    white-space: nowrap;\r\n",
       "}\r\n",
       ".dni-treeview td {\r\n",
       "    vertical-align: top;\r\n",
       "    text-align: start;\r\n",
       "}\r\n",
       "details.dni-treeview {\r\n",
       "    padding-left: 1em;\r\n",
       "}\r\n",
       "table td {\r\n",
       "    text-align: start;\r\n",
       "}\r\n",
       "table tr { \r\n",
       "    vertical-align: top; \r\n",
       "    margin: 0em 0px;\r\n",
       "}\r\n",
       "table tr td pre \r\n",
       "{ \r\n",
       "    vertical-align: top !important; \r\n",
       "    margin: 0em 0px !important;\r\n",
       "} \r\n",
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       "    text-align: start;\r\n",
       "}\r\n",
       "</style>"
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   ],
   "source": [
    "#!sql-Demo\n",
    "SELECT * from Student"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "## 使用 EF Core"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "### 新连接: 添加 --create-dbcontext 参数"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [
    {
     "data": {
      "text/markdown": [
       "Scaffolding a `DbContext` and initializing an instance of it called `DemoEF` in the C# kernel."
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/html": [
       "<div><div></div><div></div><div><strong>Installed Packages</strong><ul><li><span>Humanizer, 2.14.1</span></li><li><span>humanizer.core, 2.14.1</span></li><li><span>Microsoft.EntityFrameworkCore.Design, 7.0.0</span></li><li><span>microsoft.entityframeworkcore.sqlserver, 7.0.0</span></li><li><span>microsoft.identity.client, 4.48.1</span></li></ul></div></div>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Security Warning: The negotiated TLS 1.0 is an insecure protocol and is supported for backward compatibility only. The recommended protocol version is TLS 1.2 and later.\r\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "Kernel added: #!sql-DemoEF"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "#!connect mssql \"server=.\\SQL2008;uid=sa;pwd=gly-bicijinlian;database=Study;Encrypt=True;TrustServerCertificate=True;\" --create-dbcontext --kernel-name DemoEF "
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "上面的连接操作，会执行下面的任务：\n",
    "+ 搭建EFCore基架,并初始化 DBContext 的实例: DemoEF\n",
    "+ 安装包相关Nuget包,详情见输出\n",
    "+ 添加新的子内核 #!sql-DemoEF"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "### 使用EFCore连接: 操作数据"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "#### 类SQL脚本方式"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(2 行受到影响)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/csv": [
       "Id,Name,Age,Address,School,Grade,Room\r\n",
       "1,王明明,5,五星小区21号301,太康一高,一年级,\r\n",
       "2,张三丰,9,,太康一高,一年级,\r\n"
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       "<table><thead><tr><td><span>Id</span></td><td><span>Name</span></td><td><span>Age</span></td><td><span>Address</span></td><td><span>School</span></td><td><span>Grade</span></td><td><span>Room</span></td></tr></thead><tbody><tr><td><div class=\"dni-plaintext\"><pre>1</pre></div></td><td>王明明</td><td><div class=\"dni-plaintext\"><pre>5</pre></div></td><td>五星小区21号301</td><td>太康一高</td><td>一年级</td><td></td></tr><tr><td><div class=\"dni-plaintext\"><pre>2</pre></div></td><td>张三丰</td><td><div class=\"dni-plaintext\"><pre>9</pre></div></td><td></td><td>太康一高</td><td>一年级</td><td></td></tr></tbody></table><style>\r\n",
       ".dni-code-hint {\r\n",
       "    font-style: italic;\r\n",
       "    overflow: hidden;\r\n",
       "    white-space: nowrap;\r\n",
       "}\r\n",
       ".dni-treeview {\r\n",
       "    white-space: nowrap;\r\n",
       "}\r\n",
       ".dni-treeview td {\r\n",
       "    vertical-align: top;\r\n",
       "    text-align: start;\r\n",
       "}\r\n",
       "details.dni-treeview {\r\n",
       "    padding-left: 1em;\r\n",
       "}\r\n",
       "table td {\r\n",
       "    text-align: start;\r\n",
       "}\r\n",
       "table tr { \r\n",
       "    vertical-align: top; \r\n",
       "    margin: 0em 0px;\r\n",
       "}\r\n",
       "table tr td pre \r\n",
       "{ \r\n",
       "    vertical-align: top !important; \r\n",
       "    margin: 0em 0px !important;\r\n",
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     "metadata": {},
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   ],
   "source": [
    "#!sql-DemoEF\n",
    "SELECT * from Student"
   ]
  },
  {
   "attachments": {},
   "cell_type": "markdown",
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "source": [
    "#### C#程序中使用EF Core"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    },
    "polyglot_notebook": {
     "kernelName": "csharp"
    }
   },
   "outputs": [
    {
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      "text/html": [
       "<table><thead><tr><th><i>index</i></th><th>value</th></tr></thead><tbody><tr><td>0</td><td><details class=\"dni-treeview\"><summary><span class=\"dni-code-hint\"><code>Submission#4+Student</code></span></summary><div><table><thead><tr></tr></thead><tbody><tr><td>Id</td><td><div class=\"dni-plaintext\"><pre>1</pre></div></td></tr><tr><td>Name</td><td>王明明</td></tr><tr><td>Age</td><td><div class=\"dni-plaintext\"><pre>5</pre></div></td></tr><tr><td>Address</td><td>五星小区21号301</td></tr><tr><td>School</td><td>太康一高</td></tr><tr><td>Grade</td><td>一年级</td></tr><tr><td>Room</td><td></td></tr></tbody></table></div></details></td></tr><tr><td>1</td><td><details class=\"dni-treeview\"><summary><span class=\"dni-code-hint\"><code>Submission#4+Student</code></span></summary><div><table><thead><tr></tr></thead><tbody><tr><td>Id</td><td><div class=\"dni-plaintext\"><pre>2</pre></div></td></tr><tr><td>Name</td><td>张三丰</td></tr><tr><td>Age</td><td><div class=\"dni-plaintext\"><pre>9</pre></div></td></tr><tr><td>Address</td><td></td></tr><tr><td>School</td><td>太康一高</td></tr><tr><td>Grade</td><td>一年级</td></tr><tr><td>Room</td><td></td></tr></tbody></table></div></details></td></tr></tbody></table><style>\r\n",
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    "//连接建立后，执行环境中就有了相关的类：DBContext等\n",
    "DemoEFContext context = new DemoEFContext();\n",
    "var t = context.Students.ToList<Student>();\n",
    "display(t);\n",
    "\n",
    "FormattableString fs = $\"select * from Student;\";\n",
    "var c = context.Database.ExecuteSql(fs);\n",
    "display(c);"
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