- A+
所属分类：.NET技术
SQLite DateTime比较
SELECT * FROM table WHERE strftime('%s', date) BETWEEN strftime('%s', start_date) AND strftime('%s', end_date)
linq for sqlite的使用方法(C#)
1. 添加引用到工程
System.Data.SQLite
System.Data.SQLite.Linq
2. 修改app.config, 如下：
<?xml version="1.0"?> <configuration> <startup useLegacyV2RuntimeActivationPolicy="true"> <supportedRuntime version="v4.0" sku = ".NETFramework,Version=v4.0"/> <supportedRuntime version="v2.0.50727"/> </startup> </configuration>
3. 建立与sqlite表对应的实体类：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data.Linq.Mapping; namespace linq_test { [Table(Name = "A")] public class A { [Column(Name = "col_1")] public string Col_1 { get; set; } } }
4. 通过DataContext, 编写查询linq to sql
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Data.SQLite; using System.Data.Linq; namespace linq_test { class Program { static void Main(string[] args) { var ctx = new DataContext(new SQLiteConnection( "data source=d:\test.db")); Table<A> a = ctx.GetTable<A>(); var query = from p in a select p; foreach (var item in query) { System.Console.WriteLine("ID:{0}", item.Col_1); } System.Console.ReadKey(); } } }
