Big Query - Convert INT to Date

问题

Can not find any solution to this:

Need to convert date(int) in the format - 20190101 to DATE in the format "2019-01-01"

I have tried:

• Cast(cast(20190101 AS STRING) AS date)
• FORMAT_DATE("%F",CAST(20190101 AS STRING))
• And so on...no success

回答1:

You are looking for PARSE_DATE():

select PARSE_DATE('%Y%m%d', CAST(20190101 AS STRING))

回答2:

Below is for BigQuery Standard SQL

#standardSQL
SELECT PARSE_DATE('%Y%m%d', CAST(20190101 AS STRING))

来源：https://stackoverflow.com/questions/54791436/big-query-convert-int-to-date