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when converting text/string to date in postgres, random date is generated

I have a text column indicating date i.e. 20170101

UPDATE table_name
SET work_date = to_date(workdate, 'YYYYMMDD');


I used this command to convert it as date. However, I got a odd result. I read though other existing posts but not sure what's wrong here.

+----------+---------------+
| workdate | work_date |
+----------+---------------+
| 20170211 | 2207-05-09 |
| 20170930 | 2209-04-27 |
| 20170507 | 2208-02-29 |
| 20170318 | 2207-08-24 |
+----------+---------------+


1 Answer
1

I think you must be mistaken about the data you are supplying to to_date.

to_date

For example, input to these functions is not restricted by normal ranges, thus to_date('20096040','YYYYMMDD') returns 2014-01-17 rather than causing an error.

Source: https://www.postgresql.org/docs/9.6/static/functions-formatting.html

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