The day I fixed "Company XX" 200 times using Ctrl+HLast October, I had to update the templates for quotes and invoices due to a client's company name change. There were just over 200 files to process.

As PCMag's resident data journalist, I practically live in Microsoft Excel. I've learned that it's capable of far more than I ever imagined. These are the tips and tricks you need to know.

Almost every slow Polars script lacks in terms of one of these two: its expression engine written and executing in Rust across every core at its disposal, and its query optimizer that rewrites your ...

Have you ever experienced opening a CSV by double-clicking it, only to find that 007 became 7, 4901234567890 became 4.90123E+12, or product codes turned into dates? The tricky part is that it has ...

「このブックの変更点を教えて」「過去7日間に加えられた変更を要約して」といった具合に依頼すればよい。プロンプトにシート名やセル、範囲、期間を添えれば、結果を絞り込める。