[GitHub] [druid] shashanksinghal commented on issue #10525: Incorrect results (including nulls) when querying string column with col <> '' and col is not null

[GitBox <gi...@apache.org>]

shashanksinghal commented on issue #10525:
URL: https://github.com/apache/druid/issues/10525#issuecomment-719157152


   Thanks @Gahen, another possible solution I found is:
   instead of 
   `select * from receiver where some_string_field is not null and some_string_field != ''`
   send
   `select * from receiver where NVL(some_string_field, 'nullVal') != 'nullVal' and some_string_field != ''`
   
   NOTE that NVL solves the issue but COALESCE does not.


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