## v0.9.17 (ODBC)

- 增加 FreeSql.Provider.Odbc，实现 Oracle/SqlServer/MySql 的 Odbc 访问提供；
- 增加 FreeSqlBuilder.UseConnectionString 参数 providerType，可解决因包版本冲突时，可能无法反射获得 FreeSql.Provider 对应的类型，通常这个参数不需要设置；
- 优化 MaxLength 特性，当指定为 -1 时 DbType 会分别映射类型 text/nvarchar(max)/nvarchar2(4000)；

Author: 28810

Examples/base_entity/base_entity.csproj

@@ -1,8 +1,8 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">

Examples/benchmarker/benchmarker.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<OutputType>Exe</OutputType>
-		<TargetFramework>netcoreapp2.2</TargetFramework>
+		<TargetFramework>netcoreapp2.1</TargetFramework>
 	</PropertyGroup>
 
 	<ItemGroup>

Extensions/FreeSql.Extensions.BaseEntity/FreeSql.Extensions.BaseEntity.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0</TargetFrameworks>
-        <Version>0.9.16</Version>
+        <Version>0.9.17</Version>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <Authors>YeXiangQin</Authors>
         <Description>BaseEntity 是一种极简单的 CodeFirst 开发方式，特别对单表或多表CRUD，利用继承节省了每个实体类的重复属性（创建时间、ID等字段），软件删除等功能，进行 crud 操作时不必时常考虑仓储的使用.</Description>

Extensions/FreeSql.Extensions.JsonMap/FreeSql.Extensions.JsonMap.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.16</Version>
+		<Version>0.9.17</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 扩展包，可实现实体类属性为对象时，以JSON形式映射存储.</Description>

Extensions/FreeSql.Extensions.LazyLoading/FreeSql.Extensions.LazyLoading.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.16</Version>
+		<Version>0.9.17</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 扩展包，可实现【延时加载】属性.</Description>

FreeSql.DbContext/FreeSql.DbContext.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-        <Version>0.9.16</Version>
+        <Version>0.9.17</Version>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
         <Authors>YeXiangQin</Authors>
         <Description>FreeSql is the most convenient ORM in dotnet. It supports Mysql, Postgresql, SqlServer, Oracle and Sqlite.</Description>

FreeSql.Repository/FreeSql.Repository.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.9.16</Version>
+		<Version>0.9.17</Version>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql Implementation of General Repository, Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite, and read/write separation、and split table.</Description>
 		<PackageProjectUrl>https://github.com/2881099/FreeSql/wiki/Repository</PackageProjectUrl>

FreeSql.Tests/FreeSql.Tests.Provider.MySqlConnector/FreeSql.Tests.Provider.MySqlConnector.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/FreeSql.Tests.Provider.Odbc.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
+    <PackageReference Include="xunit" Version="2.4.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Extensions\FreeSql.Extensions.LazyLoading\FreeSql.Extensions.LazyLoading.csproj" />
+    <ProjectReference Include="..\..\FreeSql.DbContext\FreeSql.DbContext.csproj" />
+    <ProjectReference Include="..\..\FreeSql\FreeSql.csproj" />
+    <ProjectReference Include="..\..\Providers\FreeSql.Provider.Odbc\FreeSql.Provider.Odbc.csproj" />
+  </ItemGroup>
+
+</Project>

FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/Curd/MySqlDeleteTest.cs

@@ -0,0 +1,96 @@
+using FreeSql.DataAnnotations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace FreeSql.Tests.Odbc.MySql
+{
+    public class MySqlDeleteTest
+    {
+
+        IDelete<Topic> delete => g.mysql.Delete<Topic>(); //��������
+
+        [Table(Name = "tb_topic")]
+        class Topic
+        {
+            [Column(IsIdentity = true, IsPrimary = true)]
+            public int Id { get; set; }
+            public int Clicks { get; set; }
+            public string Title { get; set; }
+            public DateTime CreateTime { get; set; }
+        }
+
+        [Fact]
+        public void Dywhere()
+        {
+            Assert.Null(g.mysql.Delete<Topic>().ToSql());
+            var sql = g.mysql.Delete<Topic>(new[] { 1, 2 }).ToSql();
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` = 1 OR `Id` = 2)", sql);
+
+            sql = g.mysql.Delete<Topic>(new Topic { Id = 1, Title = "test" }).ToSql();
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` = 1)", sql);
+
+            sql = g.mysql.Delete<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).ToSql();
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` = 1 OR `Id` = 2)", sql);
+
+            sql = g.mysql.Delete<Topic>(new { id = 1 }).ToSql();
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` = 1)", sql);
+        }
+
+        [Fact]
+        public void Where()
+        {
+            var sql = delete.Where(a => a.Id == 1).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` = 1)", sql);
+
+            sql = delete.Where("id = @id", new { id = 1 }).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (id = @id)", sql);
+
+            var item = new Topic { Id = 1, Title = "newtitle" };
+            sql = delete.Where(item).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` = 1)", sql);
+
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });
+
+            sql = delete.Where(items).ToSql().Replace("\r\n", "");
+            Assert.Equal("DELETE FROM `tb_topic` WHERE (`Id` IN (1,2,3,4,5,6,7,8,9,10))", sql);
+        }
+        [Fact]
+        public void WhereExists()
+        {
+
+        }
+        [Fact]
+        public void ExecuteAffrows()
+        {
+
+            var id = g.mysql.Insert<Topic>(new Topic { Title = "xxxx" }).ExecuteIdentity();
+            Assert.Equal(1, delete.Where(a => a.Id == id).ExecuteAffrows());
+        }
+        [Fact]
+        public void ExecuteDeleted()
+        {
+
+            //delete.Where(a => a.Id > 0).ExecuteDeleted();
+        }
+
+        [Fact]
+        public void AsTable()
+        {
+            Assert.Null(g.mysql.Delete<Topic>().ToSql());
+            var sql = g.mysql.Delete<Topic>(new[] { 1, 2 }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM `TopicAsTable` WHERE (`Id` = 1 OR `Id` = 2)", sql);
+
+            sql = g.mysql.Delete<Topic>(new Topic { Id = 1, Title = "test" }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM `TopicAsTable` WHERE (`Id` = 1)", sql);
+
+            sql = g.mysql.Delete<Topic>(new[] { new Topic { Id = 1, Title = "test" }, new Topic { Id = 2, Title = "test" } }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM `TopicAsTable` WHERE (`Id` = 1 OR `Id` = 2)", sql);
+
+            sql = g.mysql.Delete<Topic>(new { id = 1 }).AsTable(a => "TopicAsTable").ToSql();
+            Assert.Equal("DELETE FROM `TopicAsTable` WHERE (`Id` = 1)", sql);
+        }
+    }
+}