sqlgen

sqlgen is not an ORM, it's a code generator instead. It parse the go struct and generate the necessary struct methods for you.

What is sqlgen?

• sqlgen is based on a Code first approach — You don't require to write SQL first, but Go code instead.
• sqlgen enables Codegen — We generate the boring bits, so you can focus on building your app quickly.
• sqlgen prioritizes Performance — Most of the things will define in compile time instead of runtime.
• sqlgen embrace Generics — We use generics to eliminate runtime reflection costs and reduce memory allocation.
• sqlgen eliminates Side Effects - You will get expected results instead of side effects when mutate your models.

SQL driver support

Driver	Support
mysql	✅
postgres	✅
sqlite	✅

Quick start

1. Install sqlgen.

   go install github.com/si3nloong/sqlgen/cmd/sqlgen@main

2. Define your model struct.

   model/user.go

   package model
   
   import "time"
   
   type LongText string
   
   type User struct {
       ID      int64 `sql:",auto_increment"`
       Name    string
       Age     uint8
       Address LongText
       Created time.Time
   }

3. Generate the output files.

   # sqlgen generate <source_file>
   sqlgen generate model/user.go

4. Generated code will be as follow.

   model/generated.go

   // Code generated by sqlgen. DO NOT EDIT.
   
   package model
   
   import (
       "database/sql/driver"
       "time"
   
       "github.com/si3nloong/sqlgen/sequel/types"
   )
   
   func (User) CreateTableStmt() string {
       return "CREATE TABLE IF NOT EXISTS `user` (`id` BIGINT NOT NULL AUTO_INCREMENT,`name` VARCHAR(255) NOT NULL,`age` TINYINT UNSIGNED NOT NULL,`address` VARCHAR(255) NOT NULL,`created` DATETIME NOT NULL,PRIMARY KEY (`id`));"
   }
   func (User) AlterTableStmt() string {
       return "ALTER TABLE `user` MODIFY `id` BIGINT NOT NULL AUTO_INCREMENT,MODIFY `name` VARCHAR(255) NOT NULL AFTER `id`,MODIFY `age` TINYINT UNSIGNED NOT NULL AFTER `name`,MODIFY `address` VARCHAR(255) NOT NULL AFTER `age`,MODIFY `created` DATETIME NOT NULL AFTER `address`;"
   }
   func (User) TableName() string {
       return "`user`"
   }
   func (User) Columns() []string {
       return []string{"`id`", "`name`", "`age`", "`address`", "`created`"}
   }
   func (v User) IsAutoIncr() {}
   func (v User) PK() (columnName string, pos int, value driver.Value) {
       return "`id`", 0, int64(v.ID)
   }
   func (v User) Values() []any {
       return []any{int64(v.ID), string(v.Name), int64(v.Age), string(v.Address), time.Time(v.Created)}
   }
   func (v *User) Addrs() []any {
       return []any{types.Integer(&v.ID), types.String(&v.Name), types.Integer(&v.Age), types.String(&v.Address), (*time.Time)(&v.Created)}
   }

More help to get started:

• Getting started tutorial - a comprehensive guide to help you get started
• CLI guide - the CLI commands.
• FAQ - frequent ask questions.
• Configuration file - configure code generation.

Benchmark

Reporting Issues

If you think you've found a bug, or something isn't behaving the way you think it should, please raise an issue on GitHub.

Contributing

We welcome contributions, Read our Contribution Guidelines to learn more about contributing to sqlgen

Big Thanks To

Thanks to these awesome companies for their support of Open Source developers ❤

Inspired By

• You don't need orm in Go
• gqlgen

License

MIT

Copyright (c) 2023-present, SianLoong Lee