Question

我想从member_info表格中的DOB表格（出生日期）中选择当前系统日期

DESIGNATION                             DOB       GENDER   MARITAL_STATUS
STUDENT                             4-Jun-1996      MALE         SINGLE
BUSINESS OWNER                      13-Sep-1981     MALE         MARRIED
BUSINESS OWNER                      1-Jan-1959      MALE         MARRIED

Answer 1

在 Oracle 中，您可以使用 SYSDATE 将日期和月份与 TO_CHAR 和正确的格式进行比较。

例如，

SQL> WITH dates AS(
  2  SELECT 'Mark' names,  to_date('4-Jun-1996', 'DD-Mon-YYYY') dt FROM dual UNION ALL
  3  SELECT 'Henry' names, to_date('7-Apr-1981', 'DD-Mon-YYYY') dt FROM dual
  4  )
  5  SELECT names,
  6    CASE
  7      WHEN TO_CHAR(dt, 'MM/DD') = TO_CHAR(sysdate, 'MM/DD')
  8      THEN 'Happy Birthday'
  9      ELSE 'Not today'
 10    END is_bday_today
 11  FROM dates;

NAMES IS_BDAY_TODAY
----- --------------
Mark  Not today
Henry Happy Birthday

SQL>

查找当前日期（祝生日快乐需要）

1 个答案: