Programming language: Go
License: MIT License
Latest version: v1.2.0

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Build Status Coverage Status Godoc license

sqlx is a library which provides a set of extensions on go's standard database/sql library. The sqlx versions of sql.DB, sql.TX, sql.Stmt, et al. all leave the underlying interfaces untouched, so that their interfaces are a superset on the standard ones. This makes it relatively painless to integrate existing codebases using database/sql with sqlx.

Major additional concepts are:

  • Marshal rows into structs (with embedded struct support), maps, and slices
  • Named parameter support including prepared statements
  • Get and Select to go quickly from query to struct/slice

In addition to the godoc API documentation, there is also some user documentation that explains how to use database/sql along with sqlx.

Recent Changes

  • The introduction of sql.ColumnType sets the required minimum Go version to 1.8.

  • sqlx/types.JsonText has been renamed to JSONText to follow Go naming conventions.

This breaks backwards compatibility, but it's in a way that is trivially fixable (s/JsonText/JSONText/g). The types package is both experimental and not in active development currently.

  • Using Go 1.6 and below with types.JSONText and types.GzippedText can be potentially unsafe, especially when used with common auto-scan sqlx idioms like Select and Get. See golang bug #13905.

Backwards Compatibility

There is no Go1-like promise of absolute stability, but I take the issue seriously and will maintain the library in a compatible state unless vital bugs prevent me from doing so. Since #59 and #60 necessitated breaking behavior, a wider API cleanup was done at the time of fixing. It's possible this will happen in future; if it does, a git tag will be provided for users requiring the old behavior to continue to use it until such a time as they can migrate.


go get github.com/jmoiron/sqlx


Row headers can be ambiguous (SELECT 1 AS a, 2 AS a), and the result of Columns() does not fully qualify column names in queries like:

SELECT a.id, a.name, b.id, b.name FROM foos AS a JOIN foos AS b ON a.parent = b.id;

making a struct or map destination ambiguous. Use AS in your queries to give columns distinct names, rows.Scan to scan them manually, or SliceScan to get a slice of results.


Below is an example which shows some common use cases for sqlx. Check sqlx_test.go for more usage.

package main

import (

    _ "github.com/lib/pq"

var schema = `
    first_name text,
    last_name text,
    email text

    country text,
    city text NULL,
    telcode integer

type Person struct {
    FirstName string `db:"first_name"`
    LastName  string `db:"last_name"`
    Email     string

type Place struct {
    Country string
    City    sql.NullString
    TelCode int

func main() {
    // this Pings the database trying to connect, panics on error
    // use sqlx.Open() for sql.Open() semantics
    db, err := sqlx.Connect("postgres", "user=foo dbname=bar sslmode=disable")
    if err != nil {

    // exec the schema or fail; multi-statement Exec behavior varies between
    // database drivers;  pq will exec them all, sqlite3 won't, ymmv

    tx := db.MustBegin()
    tx.MustExec("INSERT INTO person (first_name, last_name, email) VALUES ($1, $2, $3)", "Jason", "Moiron", "[email protected]")
    tx.MustExec("INSERT INTO person (first_name, last_name, email) VALUES ($1, $2, $3)", "John", "Doe", "[email protected]")
    tx.MustExec("INSERT INTO place (country, city, telcode) VALUES ($1, $2, $3)", "United States", "New York", "1")
    tx.MustExec("INSERT INTO place (country, telcode) VALUES ($1, $2)", "Hong Kong", "852")
    tx.MustExec("INSERT INTO place (country, telcode) VALUES ($1, $2)", "Singapore", "65")
    // Named queries can use structs, so if you have an existing struct (i.e. person := &Person{}) that you have populated, you can pass it in as &person
    tx.NamedExec("INSERT INTO person (first_name, last_name, email) VALUES (:first_name, :last_name, :email)", &Person{"Jane", "Citizen", "[email protected]"})

    // Query the database, storing results in a []Person (wrapped in []interface{})
    people := []Person{}
    db.Select(&people, "SELECT * FROM person ORDER BY first_name ASC")
    jason, john := people[0], people[1]

    fmt.Printf("%#v\n%#v", jason, john)
    // Person{FirstName:"Jason", LastName:"Moiron", Email:"[email protected]"}
    // Person{FirstName:"John", LastName:"Doe", Email:"[email protected]"}

    // You can also get a single result, a la QueryRow
    jason = Person{}
    err = db.Get(&jason, "SELECT * FROM person WHERE first_name=$1", "Jason")
    fmt.Printf("%#v\n", jason)
    // Person{FirstName:"Jason", LastName:"Moiron", Email:"[email protected]"}

    // if you have null fields and use SELECT *, you must use sql.Null* in your struct
    places := []Place{}
    err = db.Select(&places, "SELECT * FROM place ORDER BY telcode ASC")
    if err != nil {
    usa, singsing, honkers := places[0], places[1], places[2]

    fmt.Printf("%#v\n%#v\n%#v\n", usa, singsing, honkers)
    // Place{Country:"United States", City:sql.NullString{String:"New York", Valid:true}, TelCode:1}
    // Place{Country:"Singapore", City:sql.NullString{String:"", Valid:false}, TelCode:65}
    // Place{Country:"Hong Kong", City:sql.NullString{String:"", Valid:false}, TelCode:852}

    // Loop through rows using only one struct
    place := Place{}
    rows, err := db.Queryx("SELECT * FROM place")
    for rows.Next() {
        err := rows.StructScan(&place)
        if err != nil {
        fmt.Printf("%#v\n", place)
    // Place{Country:"United States", City:sql.NullString{String:"New York", Valid:true}, TelCode:1}
    // Place{Country:"Hong Kong", City:sql.NullString{String:"", Valid:false}, TelCode:852}
    // Place{Country:"Singapore", City:sql.NullString{String:"", Valid:false}, TelCode:65}

    // Named queries, using `:name` as the bindvar.  Automatic bindvar support
    // which takes into account the dbtype based on the driverName on sqlx.Open/Connect
    _, err = db.NamedExec(`INSERT INTO person (first_name,last_name,email) VALUES (:first,:last,:email)`, 
            "first": "Bin",
            "last": "Smuth",
            "email": "[email protected]",

    // Selects Mr. Smith from the database
    rows, err = db.NamedQuery(`SELECT * FROM person WHERE first_name=:fn`, map[string]interface{}{"fn": "Bin"})

    // Named queries can also use structs.  Their bind names follow the same rules
    // as the name -> db mapping, so struct fields are lowercased and the `db` tag
    // is taken into consideration.
    rows, err = db.NamedQuery(`SELECT * FROM person WHERE first_name=:first_name`, jason)

*Note that all licence references and agreements mentioned in the sqlx README section above are relevant to that project's source code only.