mapToSqlConstant method
Maps the given content to a sql literal that can be included in the query string.
Implementation
@override
String mapToSqlConstant(Uint8List? content) {
if (content == null) return 'NULL';
// BLOB literals are string literals containing hexadecimal data and
// preceded by a single "x" or "X" character. Example: X'53514C697465'
return "x'${hex.encode(content)}'";
}