Oracle Time Comparisons

Question

Oracle(10g)在这里进行了适当的TIME比较,还是需要转换为十进制时间然后进行比较？例如,

IF (SELECT TO_CHAR(sysdate,'HH24:MI:SS') from dual) <= '15:00'
THEN (...)

谢谢.

Answer 1

IF (sysdate <= trunc(sysdate)+15/24)
THEN (...)

应该做的诀窍......