如何在Hive的列中添加null的值

Question

I had a table and need to add one condition in column.

Select Age_Flag from table where (Age_Flag <> "AB" or isnotnull(Age_Flag)=False) and Date="2022-17-01";

My condition was to exclude only Age_Flag=AB and include all null value.The above query excluding null value and Age_Flag=AB.

Answer 1

You can check for NULL values with IS in hive also

So your query will be

Select Age_Flag from table 
where (Age_Flag <> "AB" or Age_Flag IS NULL) and Date="2022-17-01";