Question

以下TIMESTAMPDIFF功能仅限每月30天。当月份少于或超过30天时如何使用TIMESTAMPDIFF功能？

OTHER_VOUCHER_DATE（1/1/2012）的开始日期

SELECT  
SUPPLIER_CODE, 
TRN_CURRENT_BAL_HOME AS AMT_DUE,
OTHER_VOUCHER_DATE,
SUM(CASE WHEN TIMESTAMPDIFF(16,CHAR(TIMESTAMP('2015-02-01-00.00.00.000000')-TIMESTAMP( OTHER_VOUCHER_DATE))) <=30 THEN TRN_CURRENT_BAL_HOME END) AS  0-30 DAYS,
SUM(CASE WHEN TIMESTAMPDIFF(16,CHAR(TIMESTAMP('2015-02-01-00.00.00.000000')-TIMESTAMP( OTHER_VOUCHER_DATE))) >=31 AND TIMESTAMPDIFF(16,CHAR(TIMESTAMP('2015-02-01-00.00.00.000000')-TIMESTAMP( OTHER_VOUCHER_DATE))) <=60 THEN TRN_CURRENT_BAL_HOME END) AS 31-60 DAYS,
SUM(CASE WHEN TIMESTAMPDIFF(16,CHAR(TIMESTAMP('2015-02-01-00.00.00.000000')-TIMESTAMP( OTHER_VOUCHER_DATE))) >=61 AND TIMESTAMPDIFF(16,CHAR(TIMESTAMP('2015-02-01-00.00.00.000000')-TIMESTAMP( OTHER_VOUCHER_DATE))) <=90 THEN TRN_CURRENT_BAL_HOME END) AS 61-90 DAYS,
SUM(CASE WHEN TIMESTAMPDIFF(16,CHAR(TIMESTAMP('2015-02-01-00.00.00.000000')-TIMESTAMP( OTHER_VOUCHER_DATE))) >90 THEN TRN_CURRENT_BAL_HOME END) AS MORE THAN 90 DAYS
FROM AP_AGING

有什么想法吗？

谢谢。

Answer 1

HSQLDB计算每月正确的天数。您的示例未使用正确的语法，并将引发异常。

下面给出了如何使用TIMESTAMPDIFF的示例。请注意在时间戳字符串中正确使用分隔符：

CALL TIMESTAMPDIFF(SQL_TSI_DAY, TIMESTAMP('2015-03-01 00:00:00.000000'), TIMESTAMP('2015-02-01 00:00:00.000000'))

该示例返回28，即2月的第一天和3月的第一天之间的天数。

如何在月份少于或超过30天时使用TIMESTAMPDIFF函数

1 个答案: