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全球唯一码为主键的好处
全球唯一码为主键的好处
1.全世界唯一,数据方便导入导出(外键也是唯一的)。
2.like运算方便
3.在程序中,插入等算法时,可以先生成主键,同时插入多表,而不用先插入主表再取回主键插入其它表。
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原文地址:https://www.cnblogs.com/cuihongyu3503319/p/5014969.html
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