[英]How to calculate column in PostgreSQL
I have a table that contains the id, name and age of a person as an int, for instance 20. I have to create a select that gets the name, age, and year of birth.我有一个表,其中包含一个人的 id、姓名和年龄作为 int,例如 20。我必须创建一个 select 来获取姓名、年龄和出生年份。 How can I calculate this?我该如何计算?
So far I have this, but it doesn't work:到目前为止,我有这个,但它不起作用:
SELECT name, age, CURRENT_YEAR-age as yearOfBirth
FROM person;
You can do:你可以做:
SELECT
name,
age,
extract(year from current_date) - age as yearOfBirth
FROM person;
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