SELECT DISTINCT CLOB_COLUMN FROM TABLE;

Question

I would like to find the distinct CLOB values that can assume the column called CLOB_COLUMN (of type CLOB) contained in the table called COPIA.

I have selected a PRO

Answer 1

If it is acceptable to truncate your field to 32767 characters this works:

select distinct dbms_lob.substr(FIELD_CLOB,32767) from Table1