As well as supporting the usual primitive types, ClickHouse has rich support for complex types such as Nested, Tuple, Map, and JSON. The general principle is simple: if you know your data structure, explicitly defined columns will always give you the best compression, insert performance, and query speed. But when your data is genuinely semi-structured or schema-evolving, ClickHouse's native JSON type is purpose-built for the job.
:set prompt-cont ""，推荐阅读新收录的资料获取更多信息
他表示，所謂的虛假受訪者可能包括為了獲取獎勵而極速填寫問卷的人、假裝比實際年齡更年輕以便參與更多調查的人，甚至還有身在較貧窮國家的受訪者透過虛擬私人網路（VPN）偽裝成位於富裕國家，以參與調查並獲取對他們而言價值更高的報酬。。新收录的资料对此有专业解读
Mar 6, 2026 9:00 AM
Jake Kwon,Seoul correspondentand