要將Oracle時間戳轉換為數字，可以使用以下方法：
SELECT TO_NUMBER(TO_CHAR(your_timestamp_column, 'YYYYMMDDHH24MISS')) AS timestamp_number
FROM your_table;
SELECT EXTRACT(YEAR FROM your_timestamp_column) * 10000000000 +
EXTRACT(MONTH FROM your_timestamp_column) * 100000000 +
EXTRACT(DAY FROM your_timestamp_column) * 1000000 +
EXTRACT(HOUR FROM your_timestamp_column) * 10000 +
EXTRACT(MINUTE FROM your_timestamp_column) * 100 +
EXTRACT(SECOND FROM your_timestamp_column) AS timestamp_number
FROM your_table;
這些方法可以將Oracle時間戳轉換為數字格式，方便進行數值計算或比較。
