From 90540e4fb4d79f6c408342158867e6dce657c946 Mon Sep 17 00:00:00 2001
From: bicijinlian <bicijinlian@163.com>
Date: Sat, 8 Jul 2023 16:32:20 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E5=AF=B9SQL2008=E5=88=86?=
 =?UTF-8?q?=E9=A1=B5=E7=9A=84=E6=94=AF=E6=8C=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 Docs/说明.md                                    | 15 ++++++++++++++-
 EFCore7Study.DataService/AppDbContext.cs          |  4 +++-
 .../EFCore7Study.DataService.csproj               |  1 +
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/Docs/说明.md b/Docs/说明.md
index ce19423..cceb8c6 100644
--- a/Docs/说明.md
+++ b/Docs/说明.md
@@ -57,4 +57,17 @@ public class AppDbContext : DbContext
 
         public DbSet<Account> Accounts { get; set; }
     }
-```
\ No newline at end of file
+```
+
+## SQL Server 2008 分页错误
+原因：EF Core 放弃了对SQL2008的支持，特别是分页查询会报错："OFFSET 附近有语法错误",原因是OFFSET的分页语法，从SQL Server 2012开始支持。
+
+解决：使用第三方库 "EntityFrameworkCore.UseRowNumberForPaging", 在SQL 2008中改用 Row_Number() 分页. 如下方式配置项目使用：加一个 .UseRowNumberForPaging()
+
+```csharp
+//原使用方法
+ xx.UseSqlServer(ConnectString, opt => {})
+
+//修改后的使用方法
+ .UseSqlServer(ConnectString, opt => { opt.UseRowNumberForPaging(); })
+```
diff --git a/EFCore7Study.DataService/AppDbContext.cs b/EFCore7Study.DataService/AppDbContext.cs
index d1922ef..19cbaec 100644
--- a/EFCore7Study.DataService/AppDbContext.cs
+++ b/EFCore7Study.DataService/AppDbContext.cs
@@ -3,6 +3,8 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 
+using EntityFrameworkCore.UseRowNumberForPaging;
+
 namespace EFCore7Study.DataService
 {
     /// <summary>
@@ -36,7 +38,7 @@ namespace EFCore7Study.DataService
                 }
 
                 optionsBuilder
-                    .UseSqlServer(ConnectString)
+                    .UseSqlServer(ConnectString, opt => { opt.UseRowNumberForPaging(); })
                     .EnableSensitiveDataLogging();
             }
         }
diff --git a/EFCore7Study.DataService/EFCore7Study.DataService.csproj b/EFCore7Study.DataService/EFCore7Study.DataService.csproj
index d462168..bc0ab51 100644
--- a/EFCore7Study.DataService/EFCore7Study.DataService.csproj
+++ b/EFCore7Study.DataService/EFCore7Study.DataService.csproj
@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="EntityFrameworkCore.UseRowNumberForPaging" Version="0.4.0" />
     <PackageReference Include="Microsoft.DependencyValidation.Analyzers" Version="0.11.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.5" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.5" />