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That said, the JSON type is not a substitute for schema design. For columns with a known, stable structure, explicit column definitions will always provide the best performance. The right approach is to use explicit columns for the parts of your data you understand, and the JSON type for the parts that are genuinely dynamic.,推荐阅读新收录的资料获取更多信息
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从那一刻起,什叶派信仰就与 波斯民族主义 (Persian Nationalism) 深度绑定。
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We often see users needing to schedule merges as a result of duplicate data. Typically we suggest users address this issue upstream and deduplicate prior to insertion into ClickHouse. If this is not possible, users have a number of options: deduplicate at query time or utilize a ReplacingMergeTree.