postgres

type Database interface {
	// NamedQueryContext executes a named query against the database and returns
	NamedQueryContext(context.Context, string, interface{}) (*sqlx.Rows, error)

	// NamedExecContext executes a named query against the database and returns
	NamedExecContext(context.Context, string, interface{}) (sql.Result, error)

	// QueryRowxContext queries the database and returns an *sqlx.Row.
	QueryRowxContext(context.Context, string, ...interface{}) *sqlx.Row

	// QueryxContext queries the database and returns an *sqlx.Rows and an error.
	QueryxContext(context.Context, string, ...interface{}) (*sqlx.Rows, error)

	// QueryContext queries the database and returns an *sql.Rows and an error.
	QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)

	// ExecContext executes a query without returning any rows.
	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)

	// BeginTxx begins a transaction and returns an *sqlx.Tx.
	BeginTxx(ctx context.Context, opts *sql.TxOptions) (*sqlx.Tx, error)
}