PostgreSQL client and ORM for Golang

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• Docs
• Reference
• Examples
• RealWorld example app

Ecosystem

• Migrations by vmihailenco and robinjoseph08.
• Sharding.
• Model generator from SQL tables.
• urlstruct to decode url.Values into structs.

Features

• Basic types: integers, floats, string, bool, time.Time, net.IP, net.IPNet.
• sql.NullBool, sql.NullString, sql.NullInt64, sql.NullFloat64 and pg.NullTime.
• sql.Scanner and sql/driver.Valuer interfaces.
• Structs, maps and arrays are marshalled as JSON by default.
• PostgreSQL multidimensional Arrays using array tag and Array wrapper.
• Hstore using hstore tag and Hstore wrapper.
• Composite types.
• All struct fields are nullable by default and zero values (empty string, 0, zero time, empty map or slice, nil ptr) are marshalled as SQL NULL. pg:",notnull" is used to add SQL NOT NULL constraint and pg:",use_zero" to allow Go zero values.
• Transactions.
• Prepared statements.
• Notifications using LISTEN and NOTIFY.
• Copying data using COPY FROM and COPY TO.
• Timeouts and canceling queries using context.Context.
• Automatic connection pooling with circuit breaker support.
• Queries retry on network errors.
• Working with models using ORM and SQL.
• Scanning variables using ORM and SQL.
• SelectOrInsert using on-conflict.
• INSERT ... ON CONFLICT DO UPDATE using ORM.
• Bulk/batch inserts, updates, and deletes.
• Common table expressions using WITH and WrapWith.
• CountEstimate using EXPLAIN to get estimated number of matching rows.
• ORM supports has one, belongs to, has many, and many to many with composite/multi-column primary keys.
• Soft deletes.
• Creating tables from structs.
• ForEach that calls a function for each row returned by the query without loading all rows into the memory.
• Works with PgBouncer in transaction pooling mode.

See also

• Golang msgpack
• Golang message task queue