Column Types: BYTEA, BLOB

The sq representation of BYTEA, BLOB is the BinaryField. You can convert a byte slice []byte into a BinaryField:

func Bytes(b []byte) BinaryField

Here are the available Predicate operations on a BinaryField:

func (f BinaryField) IsNull() Predicate    // f IS NULL
func (f BinaryField) IsNotNull() Predicate // f IS NOT NULL