DB2常用函数

1,char函数
char(current date,ISO)——> 转换成yyyy-mm-dd
char(current date,USA)——>转换成mm/dd/yyyy
char(current date,EUR)——>转换成dd.mm.yyyy
2.时间函数
给定了日期、时间或时间戳，则使用适当的函数抽取出(如果适用的话)年、月、日、时、分、秒及微秒各部分：
YEAR (current timestamp)
MONTH (current timestamp)
DAY (current timestamp)
HOUR (current timestamp)
MINUTE (current timestamp)
SECOND (current timestamp)
MICROSECOND (current timestamp)

从时间戳单独抽取出日期和时间
DATE (current timestamp)
TIME (current timestamp)

将字符串转换成日期或时间值，可以使用：
TIMESTAMP (‘2002-10-20-12.00.00.000000’)
TIMESTAMP (‘2002-10-20 12:00:00’)
DATE (‘2002-10-20’)
DATE (‘10/20/2002’)
TIME (‘12:00:00’)
TIME (‘12.00.00’)