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Vertica用于时间计算的SQL语句大全

时间:2021-07-01 10:21:17 帮助过:98人阅读

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

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