cursor.execute("PREPARE stmt AS INSERT INTO mdb_columns_concepts (cDBID,tID, cID,URI,created) VALUES ($1,$2,$3,$4,current_timestamp) ON CONFLICT (cDBID, tID, cID, URI) DO NOTHING")
cursor.execute("INSERT INTO mdb_columns_concepts (cDBID,tID, cID,URI,created) VALUES (%s,%s,%s,%s,current_timestamp) ON CONFLICT (cDBID, tID, cID, URI) DO NOTHING",(cdbid,tid,cid,uri))