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SqlKata Query Builder is a powerful Sql Query Builder written in C#.
It's secure and framework agnostic. Inspired by the top Query Builders available, like Laravel Query Builder, and Knex.
SqlKata has an expressive API. it follows a clean naming convention, which is very similar to the SQL syntax.
By providing a level of abstraction over the supported database engines, that allows you to work with multiple databases with the same unified API.
SqlKata supports complex queries, such as nested conditions, selection from SubQuery, filtering over SubQueries, Conditional Statements and others. Currently it has built-in compilers for SqlServer, MySql, PostgreSql and Firebird.
Checkout the full documentation on https://sqlkata.com
using dotnet cli
$ dotnet add package SqlKatausing Nuget Package Manager
PM> Install-Package SqlKataSqlConnection connection = new SqlConnection("...");
SqlCompiler compiler = new SqlCompiler();
QueryFactory db = new QueryFactory(connection, compiler);var books = db.Query("Books").Get();IEnumerable<dynamic> books = db.Query("Books").WhereTrue("IsPublished").Get();IEnumerable<dynamic> introToSql = db.Query("Books").Where("Id", 145).Where("Lang", "en").First();IEnumerable<dynamic> recent = db.Query("Books").OrderByDesc("PublishedAt").Limit(10).Get();IEnumerable<dynamic> books = db.Query("Books")
.Include(db.Query("Authors")) // Assumes that the Books table have a `AuthorId` column
.Get();This will include the property "Author" on each "Book"
[{
"Id": 1,
"PublishedAt": "2019-01-01",
"AuthorId": 2
"Author": { // <-- included property
"Id": 2,
"...": ""
}
}]IEnumerable<dynamic> books = db.Query("Books")
.Join("Authors", "Authors.Id", "Books.AuthorId")
.Select("Books.*", "Authors.Name as AuthorName")
.Get();
foreach(var book in books)
{
Console.WriteLine($"{book.Title}: {book.AuthorName}");
}var isFriday = DateTime.Today.DayOfWeek == DayOfWeek.Friday;
var books = db.Query("Books")
.When(isFriday, q => q.WhereIn("Category", new [] {"OpenSource", "MachineLearning"}))
.Get();PaginationResult<dynamic> page1 = db.Query("Books").Paginate(10);
foreach(var book in page1.List)
{
Console.WriteLine(book.Name);
}
...
PaginationResult<dynamic> page2 = page1.Next();int affected = db.Query("Users").Insert(new {
Name = "Jane",
CountryId = 1
});int affected = db.Query("Users").Where("Id", 1).Update(new {
Name = "Jane",
CountryId = 1
});int affected = db.Query("Users").Where("Id", 1).Delete();