Incorrect parameter count in the call to native function ‘str_to_date’

There is a table tab1:

|creation_date      | acc_num             | status|
|-------------------|---------------------|-------|
|31.03.2021 07:43:43| 11111111111111111111| deny  |
|31.03.2021 07:43:43| 11111111111111111111| deny  |
|31.03.2021 01:43:20| 22222222222222222222| admit |
|30.03.2020 21:13:21| 33333333333333333333| deny  |
|30.03.2021 20:28:19| 22222222222222222222| deny  |
|30.03.2021 20:28:19| 44444444444444444444| deny  |

when I used str_to_date(), I had this uncorrect result and errors.

Query:

    select year(str_to_date(creation_date, "%d.%m.%Y %h:%i:%s")) as year
    from tab1;

logs:

    Incorrect parameter count in the call to native function 'str_to_date'
    Unknown column 'creation_date' in 'field list'
    Incorrect datetime value: '30.03.2020 21:13:21' for function str_to_date
    ...
    You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')
    from tab1' at line 1
    Incorrect datetime value: '30.03.2020 21:13:21' for function str_to_date
    ...
    Incorrect datetime value: '30.03.2021 20:28:19' for function str_to_date

result:
|year|
|----|
|2021|
|2021|
|2021|
|[NULL]|
|[NULL]|
|[NULL]|

The question is How can I get this result:

|year|
|----|
|2021|
|2021|
|2021|
|2020|
|2021|
|2021|

MySQL version is 8.0.23

Answer

If you just want the year, why not use a substring operation? After all, you’re storing the value as a string:

select substr(creation_date, 7, 4) as year

In the meantime, you should fix your table so it stores date/time values using the correct data type.

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Answer