学习SubSonic的笔记 Version 2.1

配置

<section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" requirePermission="false"/>
 <connectionStrings>
        <add name="Northwind" connectionString="Data Source=.;Initial Catalog=Northwind;Persist Security Info=True;User ID=sa;Password=sa;" />
    </connectionStrings>
    <SubSonicService defaultProvider="Northwind">
        <providers>
            <clear/>
            <add name="Northwind"
                 type="SubSonic.SqlDataProvider, SubSonic"
                 connectionStringName="Northwind"
                 generatedNamespace="Northwind"/>
        </providers>
    </SubSonicService>

 

普通查询
 exec sp_executesql N'SELECT [dbo].[Products].[ProductID], [dbo].[Products].[ProductName], [dbo].[Products].[SupplierID], [dbo].[Products].[CategoryID], [dbo].[Products].[QuantityPerUnit],
[dbo].[Products].[UnitPrice], [dbo].[Products].[UnitsInStock], [dbo].[Products].[UnitsOnOrder], [dbo].[Products].[ReorderLevel], [dbo].[Products].[Discontinued]

 FROM [dbo].[Products]
 WHERE [dbo].[Products].[CategoryID] = @CategoryID
',N'@CategoryID int',@CategoryID=1
 
 List<Product> products = new Select().From<Product>()
                    .Where(Product.CategoryIDColumn).IsEqualTo(1)
                    .ExecuteTypedList<Product>();
 
 exec sp_executesql N'SELECT [dbo].[Products].[ProductID], [dbo].[Products].[ProductName], [dbo].[Products].[SupplierID], [dbo].[Products].[CategoryID], [dbo].[Products].[QuantityPerUnit],
[dbo].[Products].[UnitPrice], [dbo].[Products].[UnitsInStock], [dbo].[Products].[UnitsOnOrder], [dbo].[Products].[ReorderLevel], [dbo].[Products].[Discontinued]

 FROM [dbo].[Products]
 INNER JOIN [dbo].[Categories] ON [dbo].[Products].[CategoryID] = [dbo].[Categories].[CategoryID]
 WHERE ([dbo].[Products].[ProductID] > @ProductID0
 OR [dbo].[Products].[ProductID] < @ProductID
)
 ORDER BY dbo.[Products].[ProductID] ASC
',N'@ProductID0 int,@ProductID int,@## varchar(8000)',@ProductID0=10,@ProductID=5,@##=NULL

 List<Product> products = new Select().From<Northwind.Product>()
    .InnerJoin(Northwind.Category.CategoryIDColumn,Northwind.Product.CategoryIDColumn)
    .WhereNorthwind.Product.Columns.ProductID).IsGreaterThan(10)
    .Or(Northwind.Product.ProductIDColumn).IsLessThan(5)
    .Close)
    .OrderAsc(Northwind.Product.ProductIDColumn)
    .ExecuteTypedList<Product>();
 
 --这个地方得注意
  .InnerJoin(Northwind.Category.CategoryIDColumn,Northwind.Product.CategoryIDColumn)
 -- 顺序不能写反了....要不然就出错了..哈哈
 
 --SubSonic源代码增加的方法
 .OrderAsc(Northwind.Product.ProductIDColumn)
 
 --Simple Paged Query(分页查询)

            SubSonic.SqlQuery q = Select.AllColumnsFrom<Product>().
               Paged(1, 20).Where("productid").IsLessThan(100);
              
 
 --分组查询方法
 SELECT CategoryID AS 'CategoryID', COUNT(1) AS 'CategoryIDs'
 FROM [dbo].[Products]
 GROUP BY CategoryID

 SqlQuery query = new Select(
    new Aggregate("CategoryID", "CategoryID", AggregateFunction.GroupBy),
    new Aggregate("1", "CategoryIDs", AggregateFunction.Count)

    ).From(Product.Schema);
query.ExecuteDataSet();

SELECT COUNT(1) AS 'CNTORDER', CONVERT(VARCHAR(7),ORDERDATE,120) AS 'ORDERDATE'
 FROM [dbo].[Orders]
 INNER JOIN [dbo].[Order Details] ON [dbo].[Orders].[OrderID] = [dbo].[Order Details].[OrderID]
 GROUP BY CONVERT(VARCHAR(7),ORDERDATE,120)

new Select(new Aggregate("1", "CNTORDER", AggregateFunction.Count),
new Aggregate("CONVERT(VARCHAR(7),ORDERDATE,120)", "ORDERDATE", AggregateFunction.GroupBy)).From(Northwind.Order.Schema)
.InnerJoin(Northwind.OrderDetail.OrderIDColumn, Northwind.Order.OrderIDColumn)
.ExecuteDataSet();

SELECT COUNT([dbo].[Products].[ProductID]) AS 'CountX', [dbo].[Products].[CategoryID] AS 'CategoryID'
 FROM [dbo].[Products]
 GROUP BY [dbo].[Products].[CategoryID]
 ORDER BY CountX ASC

 List<Product> list = new Select(
    new Aggregate(Product.ProductIDColumn, SubEnumExtentions.CountX, AggregateFunction.Count),
    new Aggregate(Product.CategoryIDColumn, Product.CategoryIDColumn.ColumnName, AggregateFunction.GroupBy)
    ).From<Product>()
    .OrderAsc(SubEnumExtentions.CountX)
    .ExecuteTypedList<Product>();
            }

自己新建了一个类

 

public class SubEnumExtentions
    {
        public static string CountX = "CountX";
        public static string CountY = "CountY";
        public static string CountZ = "CountZ";

        public static string SumX = "SumX";
        public static string SumY = "SumY";
        public static string SumZ = "SumZ";

        public static string AvgX = "AvgX";
        public static string AvgY = "AvgY";
        public static string AvgZ = "AvgZ";
    }

在SUBSONIC源代码增加了几个重载方法

public SqlQuery OrderAsc(params TableSchema.TableColumn[] columns)等方法

发现了里面N个BUG

已修复了一些...

1.如多表同名字段排序问题

2.不存在一些TableSchema.TableColumn方法

3.还发现一个问题未修改...

List<Product> list = new Select().From<Product>()
    .WhereProduct.ProductIDColumn).IsGreaterThanOrEqualTo(4)
    .And(Product.ProductIDColumn).IsLessThan(10)
    .Close)
    .OrProduct.ProductIDColumn).IsGreaterThan(15)
    .And(Product.ProductIDColumn).IsLessThan(18)
    .Close)
    .OrderDesc(Product.ProductIDColumn)
    .ExecuteTypedList<Product>();

竟然发现只传了3个参数进去...应该是4个参数的