AppliedMigration represents a successfully-executed migration. It embeds Migration, and adds fields for execution results. This type is what records p

BadDB implements the interface for the *sql.DB Conn() method in a way that always fails

BadQueryer implements the Connection interface, but fails on every call to Exec or Query. The error message will include the SQL statement to help ver

Connection defines the interface for a *sql.Conn, which can both start a new transaction and run queries.

DB defines the interface for a *sql.DB, which can be used to get a concrete connection to the database.

Dialect defines the minimal interface for a database dialect. All dialects must implement functions to create the migrations table, get all applied mi

File wraps the standard library io.Read and os.File.Name methods

Locker defines an optional Dialect extension for obtaining and releasing a global database lock during the running of migrations. This feature is supp

Logger is the interface for logging operations of the logger. By default the migrator operates silently. Providing a Logger enables output of the migr

Migration is a yet-to-be-run change to the schema. This is the type which is provided to Migrator.Apply to request a schema change.

Migrator is an instance customized to perform migrations on a particular database against a particular tracking table and with a particular dialect de

Option supports option chaining when creating a Migrator. An Option is a function which takes a Migrator and returns a Migrator with an Option modifie

Queryer is something which can execute a Query (either a sql.DB or a sql.Tx)

TestDB represents a specific database instance against which we would like to run database migration tests.

Transactor defines the interface for the Begin method from the *sql.DB

mssqlBadQueryer implements the Queryer interface but fails on specific queries