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Does Sum Return Null

David Miller • • 7 min read
Does Sum Return Null

If there are no rows, sum() will return null . It will also return null if all rows have a null balance.

Which will ignore NULL values?

  • MAX: Will check for the possible numeric value in the database. Hence Ignore NULL.
  • Count : select Count(name) from xyz, this will Return 0 if Found NULL in name of all records {NULL is getting ignore}, whereas count(1) will return number of rows.
  • SUM: SUM is basically used to add Amount Type Fields in DB.

Can you sum NULL values in SQL?

MySQL and PostgreSQL cannot sum up NULL values with the + value. The sum value will be NULL . If you want to do additions in the database: use SUM if it’s an option to sum up a column of a result set instead of expressions ( SUM ignores NULL values)

David Miller
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David Miller

David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.