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Package dburl provides a standard, URL style mechanism for parsing and opening SQL database connection strings

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Package dburl provides a standard, URL style mechanism for parsing and opening SQL database connection strings for Go. Provides standardized way to parse and open URLs for popular databases PostgreSQL, MySQL, SQLite3, Oracle Database, Microsoft SQL Server, in addition to most other SQL databases with a publicly available Go driver.

Overview | Quickstart | Examples | Schemes | Installing | Using | About

Database Connection URL Overview

Supported database connection URLs are of the form:

   protocol+transport://user:pass@host/dbname?opt1=a&opt2=b
   protocol:/path/to/file

Where:

Component Description
protocol driver name or alias (see below)
transport "tcp", "udp", "unix" or driver name (odbc/oleodbc)
user username
pass password
host host
dbname* database, instance, or service name/ID to connect to
?opt1=... additional database driver options (see respective SQL driver for available options)

* for Microsoft SQL Server, /dbname can be /instance/dbname, where /instance is optional. For Oracle Database, /dbname is of the form /service/dbname where /service is the service name or SID, and /dbname is optional. Please see below for examples.

Quickstart

Database connection URLs in the above format can be parsed with the dburl.Parse func as such:

import (
    "github.com/xo/dburl"
)
u, err := dburl.Parse("postgresql://user:pass@localhost/mydatabase/?sslmode=disable")
if err != nil { /* ... */ }

Additionally, a simple helper, dburl.Open, is provided that will parse, open, and return a standard sql.DB database connection:

import (
    "github.com/xo/dburl"
)
db, err := dburl.Open("sqlite:mydatabase.sqlite3?loc=auto")
if err != nil { /* ... */ }

Example URLs

The following are example database connection URLs that can be handled by dburl.Parse and dburl.Open:

   postgres://user:pass@localhost/dbname
   pg://user:pass@localhost/dbname?sslmode=disable
   mysql://user:pass@localhost/dbname
   mysql:/var/run/mysqld/mysqld.sock
   sqlserver://user:pass@remote-host.com/dbname
   mssql://user:pass@remote-host.com/instance/dbname
   ms://user:pass@remote-host.com:port/instance/dbname?keepAlive=10
   oracle://user:pass@somehost.com/sid
   sap://user:pass@localhost/dbname
   sqlite:/path/to/file.db
   file:myfile.sqlite3?loc=auto
   odbc+postgres://user:pass@localhost:port/dbname?option1=

Protocol Schemes and Aliases

The following protocols schemes (ie, driver) and their associated aliases are supported out of the box:

Database (scheme/driver) Protocol Aliases [real driver]
Microsoft SQL Server (mssql) ms, sqlserver
MySQL (mysql) my, mariadb, maria, percona, aurora
Oracle (goracle) or, ora, oracle, oci, oci8, odpi, odpi-c
PostgreSQL (postgres) pg, postgresql, pgsql
SQLite3 (sqlite3) sq, sqlite, file
Amazon Redshift (redshift) rs [postgres]
CockroachDB (cockroachdb) cr, cockroach, crdb, cdb [postgres]
MemSQL (memsql) me [mysql]
TiDB (tidb) ti [mysql]
Vitess (vitess) vt [mysql]
Google Spanner (spanner) gs, google, span (not yet public)
MySQL (mymysql) zm, mymy
PostgreSQL (pgx) px
Apache Avatica (avatica) av, phoenix
Apache Ignite (ignite) ig, gridgain
Cassandra (cql) ca, cassandra, datastax, scy, scylla
ClickHouse (clickhouse) ch
Couchbase (n1ql) n1, couchbase
Cznic QL (ql) ql, cznic, cznicql
Firebird SQL (firebirdsql) fb, firebird
Microsoft ADODB (adodb) ad, ado
ODBC (odbc) od
OLE ODBC (oleodbc) oo, ole, oleodbc [adodb]
Presto (presto) pr, prestodb, prestos, prs, prestodbs
SAP ASE (tds) ax, ase, sapase
SAP HANA (hdb) sa, saphana, sap, hana
Snowflake (snowflake) sf
VoltDB (voltdb) vo, volt, vdb

Any protocol scheme alias:// can be used in place of protocol://, and will work identically with dburl.Parse and dburl.Open.

Installing

Install in the usual Go fashion:

go get -u github.com/xo/dburl

Using

Please note that dburl does not import actual SQL drivers, and only provides a standard way to parse/open respective database connection URLs.

For reference, these are the following "expected" SQL drivers that would need to be imported:

Database (driver) Package
Microsoft SQL Server (mssql) github.com/denisenkom/go-mssqldb
MySQL (mysql) github.com/go-sql-driver/mysql
Oracle (goracle) gopkg.in/goracle.v2
PostgreSQL (postgres) github.com/lib/pq
SQLite3 (sqlite3) github.com/mattn/go-sqlite3
Amazon Redshift (redshift) github.com/lib/pq
CockroachDB (cockroachdb) github.com/lib/pq
MemSQL (memsql) github.com/go-sql-driver/mysql
TiDB (tidb) github.com/go-sql-driver/mysql
Vitess (vitess) github.com/go-sql-driver/mysql
Google Spanner (spanner) github.com/xo/spanner (not yet public)
MySQL (mymysql) github.com/ziutek/mymysql/godrv
PostgreSQL (pgx) github.com/jackc/pgx/stdlib
Apache Avatica (avatica) github.com/Boostport/avatica
Apache Ignite (ignite) github.com/amsokol/ignite-go-client/sql
Cassandra (cql) github.com/MichaelS11/go-cql-driver
ClickHouse (clickhouse) github.com/kshvakov/clickhouse
Couchbase (n1ql) github.com/couchbase/go_n1ql
Cznic QL (ql) github.com/cznic/ql
Firebird SQL (firebirdsql) github.com/nakagami/firebirdsql
Microsoft ADODB (adodb) github.com/mattn/go-adodb
ODBC (odbc) github.com/alexbrainman/odbc
OLE ODBC (oleodbc) github.com/mattn/go-adodb
Presto (presto) github.com/prestodb/presto-go-client/presto
SAP ASE (tds) github.com/thda/tds
SAP HANA (hdb) github.com/SAP/go-hdb/driver
Snowflake (snowflake) github.com/snowflakedb/gosnowflake
VoltDB (voltdb) github.com/VoltDB/voltdb-client-go/voltdbclient

Please see [the dburl GoDoc listing][godoc-dburl] for the full API documentation.

URL Parsing Rules

dburl.Parse and dburl.Open rely primarily on Go's standard net/url.URL type, and as such, dburl's URL parsing shares/follows the same rules, conventions, and semantics for database connection URLs as Go's standard net/url.Parse func.

Example

A full example for reference:

// _example/example.go
package main

import (
    "fmt"
    "log"

    _ "github.com/denisenkom/go-mssqldb"
    "github.com/xo/dburl"
)

func main() {
    db, err := dburl.Open("sqlserver://user:pass@localhost/dbname")
    if err != nil {
        log.Fatal(err)
    }

    var name string
    err = db.QueryRow(`SELECT name FROM mytable WHERE id=10`).Scan(&name)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Printf(">> got: %s\n", name)
}

About

dburl was built primarily to support these projects:

  • usql - a universal command-line interface for SQL databases
  • xo - a command-line tool to generate Go code from a database schema

About

Package dburl provides a standard, URL style mechanism for parsing and opening SQL database connection strings

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