Unverified60% confidenceCautionExact time
Using the wrong JOIN key in a one-to-many relationship causes row multiplication, making SUM aggregation results grow by multiples, while SQL does not throw any exception
2
Sources
60%
Confidence
Long-term
Relevance
8/4/2026
First Seen
Sources
Dex：一行命令让AI编程助手变身数据分析工程师
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