PostgreSQL User's Guide
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# Time Interval Operators

The time interval data type tinterval is a legacy from the original date/time types and is not as well supported as the more modern types. There are several operators for this type.

Table 4-5. Postgres Time Interval Operators

Operator | Description | Usage
--- | --- | ---
#< | Interval less than? |
#<= | Interval less than or equal to? |
#<> | Interval not equal? |
#= | Interval equal? |
#> | Interval greater than? |
#>= | Interval greater than or equal to? |
<#> | Convert to time interval |
<< | Interval less than? |
| | Start of interval |
~= | Same as |
<?> | Time inside interval? |

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