Last active
April 6, 2017 02:10
-
-
Save mythz/8fed1f0f84d838d1e688df7bff24df13 to your computer and use it in GitHub Desktop.
OrmLite Complex Join Example
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
using System; | |
using System.Collections.Generic; | |
using ServiceStack; | |
using ServiceStack.Logging; | |
using ServiceStack.Text; | |
using ServiceStack.OrmLite; | |
using ServiceStack.OrmLite.Sqlite; | |
using ServiceStack.DataAnnotations; | |
LogManager.LogFactory = new ConsoleLogFactory(); | |
var dbFactory = new OrmLiteConnectionFactory(":memory:", SqliteDialect.Provider); | |
var db = dbFactory.Open(); // Open ADO.NET DB Connection | |
OrmLiteConfig.DialectProvider.NamingStrategy = new LowercaseUnderscoreNamingStrategy(); | |
public class Customer | |
{ | |
[AutoIncrement] | |
public long Id { get; set; } | |
public string Name { get; set; } | |
} | |
public class Purchase | |
{ | |
[AutoIncrement] | |
public long Id { get; set; } | |
public long CustomerId { get; set; } | |
public DateTime Date { get; set; } | |
} | |
db.CreateTable<Customer>(); | |
db.CreateTable<Purchase>(); | |
var customer = new Customer { | |
Name = "Customer Name", | |
}; | |
db.Save(customer); | |
db.SaveAll(new[] { | |
new Purchase { CustomerId = customer.Id, Date = new DateTime(2001,01,01) }, | |
new Purchase { CustomerId = customer.Id, Date = new DateTime(2002,01,01) }, | |
}); | |
var results = db.Select<Tuple<Customer,Purchase>>(@"SELECT c.*, 0 EOT, p1.* | |
FROM customer c | |
JOIN purchase p1 ON (c.id = p1.customer_id) | |
LEFT OUTER JOIN purchase p2 ON (c.id = p2.customer_id AND | |
(p1.date < p2.date OR p1.date = p2.date AND p1.id < p2.id)) | |
WHERE p2.id IS NULL;"); | |
results.PrintDump(); | |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?xml version="1.0" encoding="utf-8"?> | |
<packages> | |
<package id="ServiceStack.Text" version="4.5.0" targetFramework="net45" /> | |
<package id="ServiceStack.Interfaces" version="4.5.0" targetFramework="net45" /> | |
<package id="ServiceStack.Common" version="4.5.0" targetFramework="net45" /> | |
<package id="ServiceStack.OrmLite" version="4.5.0" targetFramework="net45" /> | |
<package id="ServiceStack.OrmLite.Sqlite.Mono" version="4.5.0" targetFramework="net45" /> | |
</packages> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment