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162 Stars 11 Forks MIT License 166 Commits 1 Opened issues


💥 A lightweight DSL & ORM which helps you to write SQL in Go.

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sqlingo is a SQL DSL (a.k.a. SQL Builder or ORM) library in Go. It generates code from the database and lets you write SQL queries in an elegant way.


  • Auto-generating DSL objects and model structs from the database so you don't need to manually keep things in sync
  • SQL DML (SELECT / INSERT / UPDATE / DELETE) with some advanced SQL query syntaxes
  • Many common errors could be detected at compile time
  • Your can use the features in your editor / IDE, such as autocompleting the fields and queries, or finding the usage of a field or a table
  • Context support
  • Transaction support
  • Interceptor support

Database Support Status

| Database | Status | ------------- | -------------- | MySQL | stable | | PostgreSQL | experimental | | SQLite | experimental |


Install and use sqlingo code generator

The first step is to generate code from the database. In order to generate code, sqlingo requires your tables are already created in the database.

$ go get -u
$ mkdir -p generated/sqlingo
$ sqlingo-gen-mysql root:[email protected]/database_name >generated/sqlingo/database_name.dsl.go

Write your application

Here's a demonstration of some simple & advanced usage of sqlingo. ```go package main

import ( "" . "./generated/sqlingo" )

func main() { db, err := sqlingo.Open("mysql", "root:[email protected]/database_name") if err != nil { panic(err) }

// a simple query
var customers []*CustomerModel
    Where(Customer.Id.In(1, 2)).

// query from multiple tables var customerId int64 var orderId int64 err = db.Select(Customer.Id, Order.Id). From(Customer, Order). Where(Customer.Id.Equals(Order.CustomerId), Order.Id.Equals(1)). FetchFirst(&customerId, &orderId)

// subquery and count count, err := db.SelectFrom(Order) Where(Order.CustomerId.In(db.Select(Customer.Id). From(Customer). Where(Customer.Name.Equals("Customer One")))). Count()

// group-by with auto conversion to map var customerIdToOrderCount map[int64]int64 err = db.Select(Order.CustomerId, f.Count(1)). From(Order). GroupBy(Order.CustomerId). FetchAll(&customerIdToOrderCount) if err != nil { println(err) }

// insert some rows customer1 := &CustomerModel{name: "Customer One"} customer2 := &CustomerModel{name: "Customer Two"} _, err = db.InsertInto(Customer). Models(customer1, customer2). Execute()

// insert with on-duplicate-key-update _, err = db.InsertInto(Customer). Fields(Customer.Id, Customer.Name). Values(42, "Universe"). OnDuplicateKeyUpdate(). Set(Customer.Name, Customer.Name.Concat(" 2")). Execute()

} ```

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