22 мар. 2024 г. · This is the fastest way to replace null and empty strings: CASE WHEN column <> '' THEN column ELSE 'default' END Only applicable to string types.

16 февр. 2022 г. · Is there a better way to get false when not null, and true when null? I cannot find a better way in the documentation.

17 июн. 2020 г. · You could try using a case expression: (case when sum(ScorePrem) = 0 then 0 else sum(Score) / sum(ScorePrem) end).

9 окт. 2018 г. · I am trying to filter one of columns that has DB nulls. I am trying to see how could I merge the below 2 conditions in the where clause (checking for the ...

13 июл. 2017 г. · You can convert all columns to varchar, concatenate and check if the resulting value is null. If any of the values in the row is null the whole concatenated ...

12 июл. 2018 г. · These NULL handling behaviors are defined by the ANSI SQL standard. Your "not equal" != filter implicitly excludes null values because they ...

25 февр. 2019 г. · Indicates that Amazon Redshift should load empty CHAR and VARCHAR fields as NULL. Empty fields for other data types, such as INT, are always loaded with NULL.

6 февр. 2010 г. · Use COALESCE() instead: SELECT COALESCE(Field,'Empty') from Table; It functions much like ISNULL, although provides more functionality.

28 авг. 2018 г. · I have a query that returns 20+ columns, and I do not like this repetition of the NOT NULL comparison: WHERE c1 IS NOT NULL OR c2 IS NOT NULL OR ...

30 авг. 2018 г. · I'm trying to run the following simple query on redshift spectrum: select * from company.vehicles where vehicle_id is not null and it return 0 rows(all of the ...