FreeSql.Provider.PostgreSQL v3.2.822 — nugetz
2881099/ FreeSql.Provider.PostgreSQL v3.2.822 .NET FW4.5 .NET FW4.5.1 .NET FW4.5.2 .NET FW4.6.1
FreeSql 数据库实现，基于 PostgreSQL 9.5
Get Started dotnet CLI PackageReference Package Manager
$ dotnet add package FreeSql.Provider.PostgreSQLReadme <h1 align="center"> 🦄 FreeSql, The first AOT ORM!</h1><div align="center">
FreeSql is a powerful O/RM component, supports .NET Core 2.1+, .NET Framework 4.0+, Xamarin, And AOT.
<p>
<span>English</span> |
<a href="README.zh-CN.md">中文</a>
</p>
</div>
🛠 Support CodeFirst data migration.
💻 Support DbFirst import entity class from database, or use Generation Tool .
⛳ Support advanced type mapping, such as PostgreSQL array type, etc.
🌲 Support expression functions, and customizable analysis.
🏁 Support one-to-many and many-to-many navigation properties, include and lazy loading.
📃 Support Read/Write separation, Splitting Table/Database, Global filters, Optimistic and pessimistic locker.
🌳 Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite/Firebird/达梦/人大金仓/南大通用/虚谷/神舟通用/翰高/ClickHouse/QuestDB/MsAccess, etc.
<p align="center">
<img src="https://github.com/dotnetcore/FreeSql/raw/master/functions13.png"/>
</p>
<a href="https://contributors-img.web.app/image?repo=dotnetcore/FreeSql">
<img src="https://contributors-img.web.app/image?repo=dotnetcore/FreeSql" />
</a>
QQ Groups：561616019(available) 、4336577(full)、8578575(full)、52508226(full)
📚 Documentation
Please select a development mode:
Some open source projects that use FreeSql:
🚀 Quick start
dotnet add package FreeSql.Provider.Sqlite
static IFreeSql fsql = new FreeSql.FreeSqlBuilder()
.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=document.db")
.UseAutoSyncStructure(true) //automatically synchronize the entity structure to the database
.Build(); //be sure to define as singleton mode
class Song {
[Column(IsIdentity = true)]
public int Id { get; set; }
public string Title { get; set; }
public string Url { get; set; }
public DateTime CreateTime { get; set; }
public ICollection<Tag> Tags { get; set; }
}
class Song_tag {
public int Song_id { get; set; }
public Song Song { get; set; }
public int Tag_id { get; set; }
public Tag Tag { get; set; }
}
class Tag {
[Column(IsIdentity = true)]
public int Id { get; set; }
public string Name { get; set; }
public int? Parent_id { get; set; }
public Tag Parent { get; set; }
public ICollection<Song> Songs { get; set; }
public ICollection<Tag> Tags { get; set; }
}
🔎 Query //OneToOne、ManyToOne
fsql.Select<Tag>().Where(a => a.Parent.Parent.Name == "English").ToList();
//OneToMany
fsql.Select<Tag>().IncludeMany(a => a.Tags, then => then.Where(sub => sub.Name == "foo")).ToList();
//ManyToMany
fsql.Select<Song>()
.IncludeMany(a => a.Tags, then => then.Where(sub => sub.Name == "foo"))
.Where(s => s.Tags.Any(t => t.Name == "Chinese"))
.ToList();
//Other
fsql.Select<YourType>()
.Where(a => a.IsDelete == 0)
.WhereIf(keyword != null, a => a.UserName.Contains(keyword))
.WhereIf(role_id > 0, a => a.RoleId == role_id)
.Where(a => a.Nodes.Any(t => t.Parent.Id == t.UserId))
.Count(out var total)
.Page(page, size)
.OrderByDescending(a => a.Id)
.ToList()
fsql.Select<Song>().Where(a => new[] { 1, 2, 3 }.Contains(a.Id)).ToList();
fsql.Select<Song>().Where(a => a.CreateTime.Date == DateTime.Today).ToList();
fsql.Select<Song>().OrderBy(a => Guid.NewGuid()).Limit(10).ToList();
fsql.Select<Song>().ToList(a => new
{
a.Id,
Tags = fsql.Select<Tag>().ToList(),
SongTags = fsql.Select<SongTag>().Where(b => b.TopicId == a.Id).ToList()
});
🚁 Repository
dotnet add package FreeSql.Repository
[Transactional]
public void Add() {
var repo = ioc.GetService<BaseRepository<Tag>>();
repo.DbContextOptions.EnableCascadeSave = true;
var item = new Tag {
Name = "testaddsublist",
Tags = new[] {
new Tag { Name = "sub1" },
new Tag { Name = "sub2" }
}
};
repo.Insert(item);
}
💪 Performance FreeSql Query & Dapper Query
Elapsed: 00:00:00.6733199; Query Entity Counts: 131072; ORM: Dapper
Elapsed: 00:00:00.4554230; Query Tuple Counts: 131072; ORM: Dapper
Elapsed: 00:00:00.6846146; Query Dynamic Counts: 131072; ORM: Dapper
Elapsed: 00:00:00.6818111; Query Entity Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:00.6060042; Query Tuple Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:00.4211323; Query ToList<Tuple> Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:01.0236285; Query Dynamic Counts: 131072; ORM: FreeSql*
FreeSql ToList & Dapper Query
Elapsed: 00:00:00.6707125; ToList Entity Counts: 131072; ORM: FreeSql*
Elapsed: 00:00:00.6495301; Query Entity Counts: 131072; ORM: Dapper
👯 Contributors And other friends who made important suggestions for this project, they include:
systemhejiyong ,
LambertW ,
mypeng1985 ,
stulzq ,
movingsam ,
ALer-R ,
zouql ,
深圳|凉茶,
densen2014 ,
LiaoLiaoWuJu ,
hd2y ,
tky753 ,
feijie999 ,
constantine,
JohnZhou2020 ,
mafeng8 ,
VicBilibily ,
Soar ,
quzhen91 ,
homejun,
d4ilys etc.
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🗄 License Compatibility .NET FW4.5
.NET FW4.5.1
.NET FW4.5.2
.NET FW4.6.1
.NET 6.0
.NET 7.0
.NET 8.0
.NET 9.0
.NET 10.0
.NET Std2.0
Versions 3.5.306 Latest
Feb 16, 2026 Other versions (145) 
