Vertica用于时间计算的SQL语句大全

三个字：强、大、全，强力推荐之 SQL语句 查询结果 select (timestamp 2005-01-17 10:00 - timestamp 2005-01-01); 16 10:10 select (timestamp 2005-01-17 10:00 - timestamp 2005-01-01) / 7; 2 08:17:08.571429 select (timestamp 2005-01-17 10:00 - tim

三个字：强、大、全，强力推荐之

SQL语句	查询结果
select (timestamp '2005-01-17 10:00' - timestamp '2005-01-01');	16 10:10
select (timestamp '2005-01-17 10:00' - timestamp '2005-01-01') / 7;	2 08:17:08.571429
select (timestamp '2005-01-17 10:00' - timestamp '2005-01-01') day;	16
select cast((timestamp '2005-01-17 10:00' - timestamp '2005-01-01') day as integer) / 7;	2
select floor((timestamp '2005-01-17 10:00' - timestamp '2005-01-01') / interval '7');	2
select timestamptz '2009-05-29 15:21:00.456789';	2009-05-2915:21:00.456789-04
select timestamptz '2009-05-28';	2009-05-2800:00:00-04
select timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28';	1 15:21:00.456789
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28');	1 15:21:00.456789
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28')(3);	1 15:21:00.457
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28')second;	141660.456789
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28') year;	0
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2007-01-01') month;	28
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2007-01-01') year;	2
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2007-01-01') year to month;	2-4
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28') second(3);	141660.457
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28') minute(3);	2361
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28') minute;	2361
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28') minute to second(3);	2361:00.457
select (timestamptz '2009-05-29 15:21:00.456789'-timestamptz '2009-05-28') minute to second;	2361:00.456789