Before Having AI Create Test Data: How to Turn Excel Design Documents into 'Validation Rules'

I handed a detailed design document to an AI and had it create 100 test data entries. The CSV was output cleanly as well.

Conditions and Data Types to Check When Excel SUMIFS Returns 0

The Excel SUMIFS function is extremely useful for calculating the sum of cells that meet multiple criteria. However, many people often struggle when the calculation result unexpectedly returns 0 ...