如何比较Oracle中的两个CLOB值

DECLARE
  clob1 CLOB;
  clob2 CLOB;
  compare_result INTEGER;
BEGIN
  -- 初始化clob1和clob2的值
  SELECT your_clob_column INTO clob1 FROM your_table WHERE your_condition;
  SELECT another_clob_column INTO clob2 FROM another_table WHERE another_condition;

  -- 使用DBMS_LOB.COMPARE函数比较两个CLOB值
  compare_result := DBMS_LOB.COMPARE(clob1, clob2);

  -- 根据比较结果输出相应的信息
  IF compare_result = 0 THEN
    DBMS_OUTPUT.PUT_LINE('CLOB values are equal');
  ELSIF compare_result > 0 THEN
    DBMS_OUTPUT.PUT_LINE('CLOB1 is greater than CLOB2');
  ELSE
    DBMS_OUTPUT.PUT_LINE('CLOB1 is less than CLOB2');
  END IF;
END;