Question

我在表格中有reporting_period列，其值如下：

  ID | reporting_period
-----------------------
 123 |     092015
 456 |     082015

我想将此列值转换为常规日期，如：

  ID | reporting_period
------------------------
 123 |    09/01/2015
 456 |    08/01/2015

Answer 1

您需要使用to_date函数将字符串转换为日期如果您需要以与默认格式不同的方式显示日期，则to_char将起作用

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Answer 2

WITH data (ID, reporting_period) AS (
    SELECT 123, '092015' FROM DUAL UNION ALL
    SELECT 456, '082015' FROM DUAL
)
SELECT
    ID, TO_DATE(REPORTING_PERIOD, 'MMYYYY') reporting_period_date
FROM
    data

Answer 3

select TO_DATE(SUBSTR(reporting_period,1,2) || '/01/' || SUBSTR(reporting_period,3,4),'MM/DD/YYYY') AS reporting_period
FROM MyTable

如何在oracle中将mmyyyy文本转换为常规日期格式？

3 个答案: