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Head First SQL: Hands-On SQL UPDATE/SET/CASE
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日期:2025-04-26
Now try a CASE expression to update all of the categories at once (page 242), then try the exercise on page 245. UPDATE movie_table SET category = CASE WHEN drama = 'T' THEN 'drama' WHEN comedy = 'T' THEN 'comedy' WHEN action = 'T' THEN ......看更多