SQL
ICU Timestamp with Time Zone Operators
The table below shows the available mathematical operators for `TIMESTAMP WITH TIME ZONE` values
provided by the ICU extension.  
| Operator | Description | Example | Result |
|:-|:--|:----|:--|
| `+` | addition of an `INTERVAL` | `TIMESTAMPTZ '1992-03-22 01:02:03' + INTERVAL 5 DAY` | `1992-03-27 01:02:03` |
| `-` | subtraction of `TIMESTAMPTZ`s | `TIMESTAMPTZ '1992-03-27' - TIMESTAMPTZ '1992-03-22'` | `5 days` |
| `-` | subtraction of an `INTERVAL` | `TIMESTAMPTZ '1992-03-27 01:02:03' - INTERVAL 5 DAY` | `1992-03-22 01:02:03` |  
Adding to or subtracting from [infinite values](#docs:sql:data_types:timestamp::special-values) produces the same infinite value.