oracle時(shí)間戳轉(zhuǎn)換為數(shù)字怎么實(shí)現(xiàn)

小億
605
2024-02-20 16:21:24
欄目: 云計(jì)算

要將Oracle時(shí)間戳轉(zhuǎn)換為數(shù)字，可以使用以下方法：

  1. 使用TO_NUMBER函數(shù)：
SELECT TO_NUMBER(TO_CHAR(your_timestamp_column, 'YYYYMMDDHH24MISS')) AS timestamp_number
FROM your_table;
  1. 使用EXTRACT函數(shù)：
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(shí)間戳轉(zhuǎn)換為數(shù)字格式，方便進(jìn)行數(shù)值計(jì)算或比較。

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