用于查找日期列的 AWS Athena 查询具有字符串或不满足时间戳格式

Question

I was testing Sprak 3 upgrades in AWS Athena and need to check date columns whether timestamp format is proper or not,Can any one please give me query to check whether date columns has any Values other than Timestamp format

Answer 1

Assuming that you have a varchar column you can try using date_parse wrapped intry :

select *
from table 
where try(date_parse(string_column, 'your_expected_format')) is null -- assuming no original nulls in column

Or via try_cast for "standard" format:

select *
from table 
where try_cast(string_column as timestamp) -- assuming no original nulls in column