- 1 year ago
SQLite3: extract column blob. Impossible to load_extension fileio.c
To extract data from a BLOB column in SQLite3, you can use the SELECT
statement and the hex()
function to convert the binary data to a hexadecimal string. Here's an example:
scssSELECT hex(my_blob_column) FROM my_table;
Replace my_blob_column
with the name of your BLOB column, and my_table
with the name of your table.
This will return a result set with one column containing the hexadecimal representation of the binary data.
As for the load_extension
issue, it seems that you are trying to load a custom extension named fileio.c
. However, it's not clear what exactly the problem is.
Here are some things you can try:
Make sure that the file
fileio.c
exists and is in the correct directory.Check that you have the appropriate permissions to load extensions. In some cases, you may need to enable the
sqlite3_enable_load_extension
function first.Verify that your version of SQLite was compiled with extension loading support. Some distributions of SQLite do not include this feature.
Keep in mind that loading external extensions can be risky, as they can potentially introduce security vulnerabilities or cause instability. Always use caution and only load extensions from trusted sources.