MultiThreadingStudy/Docs/Jupter笔记.002.连接数据库.ipynb

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    "连接数据库\n",
    "==============================\n",
    "连接到SQL Server,并操作数据。 "
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    "+ 引用操作类库"
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    "#r \"nuget:Microsoft.Dotnet.Interactive.SqlServer,*-*\""
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    "+ 连接到SQL Server\n",
    "  > 数据库连接命令为 `#!connect` 查看连接帮助 `#!connect -h`"
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    "#!connect -h\n"
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    "> 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"
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       "Kernel added: #!sql-Demo"
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    "#!connect mssql \"server=.\\SQL2008;uid=sa;pwd=gly-bicijinlian;database=Demo;Encrypt=True;TrustServerCertificate=True;\" --kernel-name Demo\n",
    "\n",
    "//重复执行会抛出错误，目前没有找到解决方法\n"
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    "+ 使用连接\n",
    "  一种方法是：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`"
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     "kernelName": "sql-Demo"
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       "Id,Name,Age\r\n",
       "1,张三,20\r\n",
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       "4,小龙子,50\r\n"
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       "<table><thead><tr><td><span>Id</span></td><td><span>Name</span></td><td><span>Age</span></td></tr></thead><tbody><tr><td><div class=\"dni-plaintext\"><pre>1</pre></div></td><td>张三</td><td><div class=\"dni-plaintext\"><pre>20</pre></div></td></tr><tr><td><div class=\"dni-plaintext\"><pre>2</pre></div></td><td>李四</td><td><div class=\"dni-plaintext\"><pre>30</pre></div></td></tr><tr><td><div class=\"dni-plaintext\"><pre>3</pre></div></td><td>三丰</td><td><div class=\"dni-plaintext\"><pre>300</pre></div></td></tr><tr><td><div class=\"dni-plaintext\"><pre>4</pre></div></td><td>小龙子</td><td><div class=\"dni-plaintext\"><pre>50</pre></div></td></tr></tbody></table><style>\r\n",
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    "SELECT * from Test"
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    "> 推荐的是下面的方法：即使用 `#!sql-Demo` ,后面直接写SQL语句，不用切换 kernel "
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       "Id,Name,Age\r\n",
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    "#!sql-Demo\n",
    "SELECT * from Test"
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    "## 使用 EF Core"
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    "+ 新连接,添加 --create-dbcontext 参数"
   ]
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       "Scaffolding a `DbContext` and initializing an instance of it called `DemoEF` in the C# kernel."
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       "<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>"
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     "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"
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       "Kernel added: #!sql-DemoEF"
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    "#!connect mssql \"server=.\\SQL2008;uid=sa;pwd=gly-bicijinlian;database=Demo;Encrypt=True;TrustServerCertificate=True;\" --create-dbcontext --kernel-name DemoEF "
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    "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"
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    "+ 使用EFCore连接，操作数据"
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    "#!sql-DemoEF\n",
    "SELECT * from Test"
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    "+ 程序中使用EF Core连接"
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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.Tests.ToList<Test>();\n",
    "display(t);\n",
    "\n",
    "FormattableString fs = $\"select * from Test;\";\n",
    "var c = context.Database.ExecuteSql(fs);\n",
    "display(c);"
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