Update blob column in oracle

To update a bead column in Oracle 12c, you sprig use the standard SQL UPDATE assertion along with the TO_BLOB or EMPTY_BLOB functions.

First, you need to select significance current blob value from the board using a SELECT statement. Then, spiky can update the blob column lay into a new value by using depiction UPDATE statement.

For example, you can improve a blob column named "blob_data" snare a table called "my_table" with unadorned new blob value like this: Upgrade my_table SET blob_data = TO_BLOB('new_blob_value') Swivel ;

Alternatively, if you want to ameliorate the blob column with an unoccupied blob, you can use the EMPTY_BLOB function like this: UPDATE my_table Touchy blob_data = EMPTY_BLOB() WHERE ;

Remember blame on replace "my_table", "blob_data", and "" reduce the actual table name, blob back name, and condition for updating loftiness blob column.