# SqlRepoEx

**Repository Path**: skymysky/SqlRepoEx

## Basic Information

- **Project Name**: SqlRepoEx
- **Description**: .Net平台下兼容.NET Standard 2.0，一个实现以Lambda表达式转转换标准SQL语句，使用强类型操作数据的轻量级ORM工具，在减少魔法字串同时，通过灵活的Lambda表达式组合，实现业务数据查询的多样性。
- **Primary Language**: C#
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 5
- **Created**: 2018-10-04
- **Last Updated**: 2020-12-20

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 本项目是在 SqlRepo 之上进行的二次开发
 
## 主要解决：<br>
 
1、解决拼接语句，使用where以外方法时，缺少Where子句时的错误；<br>
2、解决多条件拼接Where；<br>
3、增加操作时，不再受限于实例必需有Id的自增自段<br>


## Example
``` c#
IRepository<ToDo> repository = repositoryFactory.Create<ToDo>();
            var results = repository.Query()
                         .Select(e => e.Id, e => e.Task, e => e.CreatedDate);
 results = results.Where(e => e.IsCompleted == false);
 results = results.Where(e => e.Id == 3);
```
未改之前
``` sql

SELECT [dbo].[ToDo].[Id]
, [dbo].[ToDo].[Task]
, [dbo].[ToDo].[CreatedDate]
FROM [dbo].[ToDo]
WHERE ([dbo].[ToDo].[IsCompleted] = 0)
WHERE ([dbo].[ToDo].[Id] = 3);

```
更改后
``` sql

SELECT [dbo].[ToDo].[Id]
, [dbo].[ToDo].[Task]
, [dbo].[ToDo].[CreatedDate]
FROM [dbo].[ToDo]
WHERE ([dbo].[ToDo].[IsCompleted] = 0)
And ([dbo].[ToDo].[Id] = 3);

```
指定非自增字段
``` C#
var repository = this.repositoryFactory.Create<DoitTest>();
DoitTest doitTest = new DoitTest();

doitTest.TestRmk = "测试";
doitTest.TestBool = true;
doitTest.TestId = 123;
Console.WriteLine(repository.Insert().UsingIdField(d => d.TestId, false).For(doitTest).Sql());
```
生成的SQL
``` SQL
INSERT [dbo].[DoitTest]([TestId], [TestRmk], [TestBool])
VALUES(123, '测试', 1);

```
指定非自增字段
``` C#
var repository = this.repositoryFactory.Create<DoitTest>();
DoitTest doitTest = new DoitTest();

doitTest.TestRmk = "测试";
doitTest.TestBool = true;
doitTest.TestId = 123;
Console.WriteLine(repository.Insert().UsingIdField(d => d.TestId).For(doitTest).Sql());
```
生成的SQL
``` SQL
INSERT [dbo].[DoitTest]([TestRmk], [TestBool])
VALUES('测试', 1);
SELECT *
FROM [dbo].[DoitTest]
WHERE [TestId] = SCOPE_IDENTITY();
```
 
原项目中的例子：
```csharp

public class GettingStarted
{
    private IRepositoryFactory repositoryFactory;

    public GettingStarted(IRepositoryFactory repositoryFactory)
    {
        this.repositoryFactory = repositoryFactory;
    }

    public void DoIt()
    {
         var repository = this.repositoryFactory.Create<ToDo>();
         var results = repository.Query()
         .Select(e => e.Id, e => e.Task, e => e.CreatedDate)
         .Where(e => e.IsCompleted == false)
         .Go();
    }
}

```
Generates the following SQL statement and maps the results back to the list of ToDo objects.

```sql

SELECT [dbo].[ToDo].[Id], [dbo].[ToDo].[Task], [dbo].[ToDo].[CreatedDate]
FROM [dbo].[ToDo]
WHERE [dbo].[ToDo].[IsCompleted] = 0;

```
2018-9-25增加分页操作<br/>
```csharp
 var repository = RepoFactory.Create<ToDo>();
            var results = repository.Query()
                                    .Select(e => e.Id, e => e.Task, e => e.CreatedDate)
                                    .OrderBy(e => e.Id)
                                    .Page(10, 3)
                                    .Go();
```
2018-9-25增加存储OUTPUT参数返回<br/>