<Language from="SQL" To="C#">
<Type from="bigint" To="long" />
<Type from="binary" To="object" />
<Type from="bit" To="bool" />
<Type from="char" To="string" />
<Type from="datetime" To="DateTime" />
<Type from="decimal" To="decimal" />
<Type from="float" To="double" />
<Type from="image" To="byte[]" />
<Type from="int" To="int" />
<Type from="money" To="decimal" />
<Type from="nchar" To="string" />
<Type from="ntext" To="string" />
<Type from="numeric" To="decimal" />
<Type from="nvarchar" To="string" />
<Type from="real" To="float" />
<Type from="smalldatetime" To="DateTime" />
<Type from="smallint" To="short" />
<Type from="smallmoney" To="decimal" />
<Type from="text" To="string" />
<Type from="timestamp" To="byte[]" />
<Type from="tinyint" To="byte" />
<Type from="uniqueidentifier" To="Guid" />
<Type from="varbinary" To="byte[]" />
<Type from="varchar" To="string" />
<Type from="xml" To="string" />
<Type from="sql_variant" To="object" />
</Language>
<Language from="SQL" To="C# System Types">
<Type from="bigint" To="System.Int64" />
<Type from="binary" To="System.Object" />
<Type from="bit" To="System.Boolean" />
<Type from="char" To="System.String" />
<Type from="datetime" To="System.DateTime" />
<Type from="decimal" To="System.Decimal" />
<Type from="float" To="System.Double" />
继续SQLServer索引调优实践。这次探讨一下索引覆盖 - SQL Server主要使用索引去查询你需要的数据，当索引包括所有的你请求查询的字段，SQL Server将不需要去在表中查询。这个概念称做“索引覆盖”。
SQLServer2005的Non-clustered INDEX增加了一个“包含列(included column)
”选项。在 SQL Server 2 ......
1
<asp:UpdatePanelID="UpdatePanel1"
UpdateMode="Conditional"
runat="server">
<ContentTemplate>
<asp:Button ID="Button1"
......
