dapper

Let's say I have this User class: public class User { public int ID { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string Email { get; set; } public DateTime DateCreated { get; set; } public DateTime LastLogin { get; set; } } Which I want to map to the following table: CREATE TABLE "user" ( "ID" int(11) NOT NULL AUTO_INCREMENT, "FirstName" varchar(45) DEFAULT NULL, "LastName" varchar(45) DEFAULT NULL, "Email" varchar(255) NOT NULL, "DateCreated" int(11) NOT NULL, "LastLogin" int(11) NOT NULL, PRIMARY KEY ("ID") ) Or put in simpler words: I want

I have a very simply query in my projects that returns ~1.3 million rows: var aliases = ctx.Query<sec_entity_alias>(@"select * from sec_entity_alias"); The class that is mapped to is: public partial class sec_entity_alias { public int id { get; set; } public int sec_entity_id { get; set; } public byte sec_entity_alias_type_id { get; set; } public string symbol { get; set; } public virtual sec_entity_alias_type sec_entity_alias_type { get; set; } } When I run the query it hangs indefinitely and pegs the CPU. When I remove the dapper type mapping and instead run the following, the query returns

目录 [LINQ2Dapper]最完整Dapper To Linq框架(一)---基础查询 [LINQ2Dapper]最完整Dapper To Linq框架(二)---动态化查询 [LINQ2Dapper]最完整Dapper To Linq框架(三)---实体类关系映射 [LINQ2Dapper]最完整Dapper To Linq框架(四)---Linq和SQL并行使用 [LINQ2Dapper]最完整Dapper To Linq框架(五)---查看Linq实际执行的SQL [LINQ2Dapper]最完整Dapper To Linq框架(六)---多表联合与匿名类型返回 1.多表联合查询 默认情况下Where,Get,ToList,PageList等函数只支持单表操作， 如 var comment = conn.QuerySet<Comment>() .Where(x => x.Id.NotIn(new int[] { 1, 2, 3 }) && x.SubTime.AddMinutes(50) < DateTime.Now.AddDays(-1) && x.Type.IsNotNull()) .ToList();　 3.1.2后支持双表和三表同时映射操作，需要通过From函数指定映射表， 如 var comment = conn.QuerySet<Comment>()

原文: Dapper的扩展这个你知道嘛？ 之前写的 ORM对比文章 中，我选Dapper作为底层ADO的基础访问框架后，我对此再次进行进一步的深入研究，发现里面还有延伸了一些好用的扩展方法和特性，那我便简单的跟大家说一下特性标签。 一、TableAttribute 特性 　　这个先对简单，就是对模型进行定义表名，如果你未标注表名特性，默认去模型类型名称，并且此特性只能标注在类上，不能标注在属性，方法等其它作用体上； 二、KeyAttribute [隐式]主键特性 　　为什么我把它定义隐式呢，关键在于在Insert时，如果你用它标记了一个属性，那这个属性的值无法对应插入到数据表里，比较适合自增类型主键和数据库默认有赋值的主键字段 　　代码模拟：　　 [Table("Person")] public class Person { [Key] public Guid ID { get; set; } public string Name { get; set; }　　　　 public byte Age { get; set; } }　　//最终的脚本是：INSERT INTO [Person] (Name,Age) VALUES (@Name,@Age) 三、ExplicitKeyAttribute [显式]主键特性 　　我之前也比较纳闷怎么需要定义两种KEY特性，在尝试DEMO后

How do i make Dapper.NET to CRUD my Oracle DB? I have table named: PLAYER_LOG it's identity is done by trigger, here is the sql SELECT SQ_MASTER_SEQUENCE.NEXTVAL INTO tmpVar FROM dual; :NEW.ID := tmpVar; my Model is: public class PlayerLogStorage : IEntity //-> here is the identity { public string Cli { get; set; } public string PlayerAnswer { get; set; } public DateTime InsertDate { get; set; } } here is my insert: using (IDbConnection ctx = DbConnectionProvider.Instance.Connection) { ctx.Query<PlayerLogStorage>("INSERT INTO PLAYER_LOG (CLI, ANSWER, INSERT_DATE) VALUES (:Cli, :PlayerAnswer,

I'm using Dapper in asp.net mvc 4 project .net f/w 4.6.1 using sql server 2016 express <packages> <package id="Dapper" version="1.50.2" targetFramework="net461" /> </packages> I have a stored proc which deletes from 2 tables which should be transactional ALTER PROCEDURE [dbo].[FeedbackDelete] @FeedbackID UNIQUEIDENTIFIER AS SET NOCOUNT OFF SET XACT_ABORT ON BEGIN TRANSACTION DELETE FROM dbo.Document WHERE FeedbackId = @FeedbackID IF(@@ERROR != 0) BEGIN ROLLBACK TRANSACTION RETURN 1 END DELETE FROM [dbo].[Feedback] WHERE [FeedbackID] = @FeedbackID IF(@@ERROR != 0 OR @@ROWCOUNT != 1) BEGIN

This is my first experience with Dapper.Contrib (latest version from Nuget) and it's a strange situation: using (SqlConnection cn = new SqlConnection(connectionString)) { cn.Open(); var product = cn.Get<Product>(1); } On SqlMapperExtensions, it raises the error Invalid object name 'Products' : public static T Get<T>(this IDbConnection connection, dynamic id, IDbTransaction transaction = null, int? commandTimeout = null) where T : class { var type = typeof(T); string sql; if (!GetQueries.TryGetValue(type.TypeHandle, out sql)) } The database receives the command select * from Products where Id =