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In PostgreSQL, we can determine the age of something (or someone) by passing a timestamp to the age function.

For instance, if we want to know how long it has been since y2k, we can run the following query:

> select age(timestamp '2000-01-01');
           age
-------------------------
 16 years 4 mons 12 days

Additionally, if we want to know the amount of time between two dates, we can pass two timestamps to the age function.

For example, we can find out how old Prince lived to be by passing in the date of death and then date of birth:

> select age(timestamp 'April 21, 2016', timestamp 'June 7, 1958');
           age
--------------------------
 57 years 10 mons 14 days

Via jbranchaud/til.

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