what is Excel's "Power Query" feature?

• "Power Query" on Wikipedia
• quicker introductions to Power Query
  • a 9 minute introduction
  • a 5 minute introduction
  • a 16 minute introduction
• course-length videos
  • a longer Power Query course (a playlist containing 41 videos, the total duration is 4 hr 45 min, though of course you can skip around between the videos)
  • several >30 min YouTube videos

reference

• powerquery.microsoft.com
• learn.microsoft.com/en-us/power-query/
• learn.microsoft.com/en-us/powerquery-m/
• github.com/MicrosoftDocs/powerquery-docs/tree/main/powerquery-docs

Other specific information:

• how to connect Power Query to an IBM DB2 database