• 日期: 2026-03-28
  • 标签: 常规

The inner join is used in this query to combine data from two tables, 'Movie' and 'Rating', based on their common column 'mID'. By using an inner join, only the records that have a matching 'mID' in both tables will be included in the result set. This ensures that we only retrieve data for movies that have been rated.


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