#Sqlite3 golang how to#
#Sqlite3 golang update#
#Sqlite3 golang driver#
#Sqlite3 golang upgrade#
#Sqlite3 golang code#

0.183s 145 - 10 SELECTS w/ORDER BY and LIMIT, unindexed. 0.182sġ45 - 10 SELECTS w/ORDER BY and LIMIT, unindexed. 0.276s 142 - 10 SELECTS w/ORDER BY, unindexed. 0.120sġ42 - 10 SELECTS w/ORDER BY, unindexed. 0.083s 130 - 25 SELECTS, numeric BETWEEN, unindexed. 0.099sġ30 - 25 SELECTS, numeric BETWEEN, unindexed. 0.137s 120 - 50000 unordered INSERTS with one index/PK. 0.082sġ20 - 50000 unordered INSERTS with one index/PK. 0.114s 110 - 50000 ordered INSERTS with one index/PK. 0.077sġ10 - 50000 ordered INSERTS with one index/PK. 0.071s 100 - 50000 INSERTs into table with no index. Linux/amd64 machine, CPU: AMD Ryzen 9 3900X 12-Core Processor × 24, 128GB The results are from Go version 1.20.4 and GCC version 10.2.1 on a Numbers for the pure C version were produced by ~/src//sqlite/testdata/sqlite-src-3410200/test$ gcc speedtest1.c. Numbers for the pure Go version were produced by ~/src//sqlite/speedtest1$ go build &. /builder/?importpath=%2fsqlite Speedtest1 Greim GmbH byĪllowing one of the maintainers to work on it also in office hours. This project is sponsored by Schleibinger Geräte Teubert u. Zero-configuration, transactional SQL database engine.

SQLite is an in-process implementation of a self-contained, serverless,

#Sqlite3 golang driver#

Although you could see mattn's driver ( /mattn/go-sqlite3) in go.mod file, we import it for tests only. If err != nil & err != migrate.Package sqlite is a cgo-free port of SQLite. Return fmt.Errorf('initializing db migration failed %s', err) M, err := migrate.NewWithInstance('go-bindata', d, 'sqlite3', driver) Return fmt.Errorf('creating sqlite3 db driver failed %s', err) '/golang-migrate/migrate/database/sqlite3'īindata '/golang-migrate/migrate/source/go_bindata'įunc RunMigrateScripts(db *sql.DB) error ) The following command shall generate the binary data:

Run the relevant migration scripts on the database.

Convert the migration scripts into embeddable binary form.

The process to equip migration into the application is threefold:

go-bindata: Used for embedding the migration scripts into the application.

golang-migrate: Used for database migrations.

This shall be used in conjunction with database/sql.

go-sqlite3: Database driver for SQLite.

database/sql: Generic interface around SQL databases.

This post shall utilize the following Go libraries and packages for creation and migration of the DB:

#Sqlite3 golang update#

For instance, if the DB schema version is 6, only the scripts with version 7 or higher, if available, shall be used to update the schema.

#Sqlite3 golang code#

For subsequent launches, the migration code searches for any scripts that have a higher version, and executes the SQL statements in those scripts. The schema version of the database shall be set to the latest version specified among the scripts.

If the database for the application does not exist (as would be the case for the first launch), the migration code shall run the up scripts to create it.

#Sqlite3 golang upgrade#

The up/down suffix determines whether the script will be used to upgrade or downgrade the database.

This is ignored in the migration process.

The description denotes the changes made by the script.

The version is the numerical value used to determine the schema version of the database.

This conveys the order in which these must be executed. The naming of these files is done in a specific format: _.sql. We refer to these files as migration scripts. This can be done by embedding a set of scripts containing SQL commands to do the same. Migration Scripts And VersioningĪ good way of shipping out a client side database application is to equip it with the mechanism to create the DB itself, when launched for the first time.

#Sqlite3 golang how to#

Note: If you are aware of how to create and setup migration for databases using Go, please skip the Let Us GO! section below. This is based on one of our applications, where we encountered this problem of schema migration.

This post covers the basics of SQLite DB creation and migration using Go, and provides guidelines on how to update the DB schema without loss or corruption of data. The Go programming language has libraries for creation and migration of SQLite databases. This is where SQLite has a slight disadvantage, discussed in detail later in this post. Such a modification must not, in any manner, tamper with or corrupt any data that already exists on the database. For instance, one of the tables might need a new column. However, occasionally, there may arise the need to modify the database schema. It is serverless, works with easily accessible cross-platform database files, and does not need any installation. SQLite is a nifty choice for client side database applications.