Question
What are the common causes of this error in Snowflake SQL?
Asked by: USER6582
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58 Answers
Answer (58)
Common causes include: 1) Using `=` to compare a column to `NULL`. 2) Using a column with potential `NULL` values in a `WHERE` clause without handling `NULL`s. 3) Incorrectly using `CASE` statements without handling all possible outcomes. 4) Applying boolean functions to columns that might contain `NULL` values.