Time Functions
This section describes functions and operators for examining and manipulating TIME values.
Time Operators
The table below shows the available mathematical operators for TIME types.
| Operator | Description | Example | Result |
|---|---|---|---|
+ | addition of an INTERVAL | TIME '01:02:03' + INTERVAL 5 HOUR | 06:02:03 |
- | subtraction of an INTERVAL | TIME '06:02:03' - INTERVAL 5 HOUR' | 01:02:03 |
Time Functions
The table below shows the available scalar functions for TIME types.
| Function | Description | Example | Result |
|---|---|---|---|
current_time/get_current_time() | Current time (start of current transaction) | ||
date_diff(part, starttime, endtime) | The number of partition boundaries between the times | date_diff('hour', TIME '01:02:03', TIME '06:01:03') | 5 |
datediff(part, starttime, endtime) | Alias of date_diff. The number of partition boundaries between the times | datediff('hour', TIME '01:02:03', TIME '06:01:03') | 5 |
date_part(part, time) | Get subfield (equivalent to extract) | date_part('minute', TIME '14:21:13') | 21 |
datepart(part, time) | Alias of date_part. Get subfield (equivalent to extract) | datepart('minute', TIME '14:21:13') | 21 |
date_sub(part, starttime, endtime) | The number of complete partitions between the times | date_sub('hour', TIME '01:02:03', TIME '06:01:03') | 4 |
datesub(part, starttime, endtime) | Alias of date_sub. The number of complete partitions between the times | datesub('hour', TIME '01:02:03', TIME '06:01:03') | 4 |
extract(part from time) | Get subfield from a time | extract('hour' FROM TIME '14:21:13') | 14 |
make_time(bigint, bigint, double) | The time for the given parts | make_time(13, 34, 27.123456) | 13:34:27.123456 |
The only date parts that are defined for times are epoch, hours, minutes, seconds, milliseconds and microseconds.