MySql Connector prepared statement only transfers 64 bytes

Question

I am using the MySql Connector C++ to store a JPEG image from a file into the database. I am using the prepared statement. After execution of the prepared statement, only the

Answer 1

The issue lies in the constructor of the image file:

std::ifstream   blob_file(filename.c_str());

This should have the binary mode attribute:

std::ifstream   blob_file(filename.c_str(), std::ios_base::binary);

The file, a JPEG image, is binary data.

Also, the hex dump at byte 65 shows 1a, which is the Windows OS end of file character:
0000040 1a14 1115 1811 1821 1d1a 1f1d 1f1f 1713

After fixing the constructor, the MySql shows the data size:

mysql> SELECT ID_Picture, LENGTH(Image_Data)
    -> FROM picture_image_data
    -> WHERE ID_Picture = 1;
+------------+--------------------+
| ID_Picture | LENGTH(Image_Data) |
+------------+--------------------+
|          1 |              18453 |
+------------+--------------------+
1 row in set (0.00 sec)