Vertica对于所计算的时间SQL声明大全

时间：2023-03-10 02:58:15
Vertica对于所计算的时间SQL声明大全

词：强、大、所有，强烈推荐

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

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