In Part 1 of the NULL series, we focused on: what NULL represents in a dataset: a value that is missing, unknown, or not applicable how to use is null and is not null to find, update and delete rows with NULL . NULL values can cause unexpected behavior in comparisons and calculations, so it's im...

Source: [Dev.to](https://dev.to/rose_odiwuor/when-sql-has-nothing-to-say-handling-nulls-34jm)

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