conn

type PgxConn interface {
	Begin(context.Context) (pgx.Tx, error)
	BeginFunc(ctx context.Context, f func(pgx.Tx) error) (err error)
	Exec(ctx context.Context, sql string, arguments ...interface{}) (pgconn.CommandTag, error)
	Query(ctx context.Context, sql string, optionsAndArgs ...interface{}) (pgx.Rows, error)
	QueryRow(ctx context.Context, sql string, optionsAndArgs ...interface{}) pgx.Row
	QueryFunc(ctx context.Context, sql string, args, scans []interface{}, f func(pgx.QueryFuncRow) error) (pgconn.CommandTag, error)
	SendBatch(ctx context.Context, b *pgx.Batch) pgx.BatchResults
	CopyFrom(ctx context.Context, tableName pgx.Identifier, columnNames []string, rowSrc pgx.CopyFromSource) (int64, error)
}

type Querier interface {
	Select(ctx context.Context, dst interface{}, sql string, args ...interface{}) error
	Get(ctx context.Context, dst interface{}, sql string, args ...interface{}) error
	Exec(ctx context.Context, sql string, args ...interface{}) (int64, error)
	Tx(ctx context.Context, f func(q Querier) error, opts ...TxOption) error
	Conn() PgxConn
}

type TxOption func(*TxOptions)

type TxOptions struct {
	TransactionTimeout int64
	StatementTimeout   int64
}